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Corrosion Behavior of FeAl and Fe3Al Based Fe-Al-C Alloys in Sulfuric Acid

A.P. Silva P.P. Brito N. Martins
Archives of Foundry Engineering | 2022 | vol. 22 | No 2 | 77-82 | DOI: 10.24425/afe.2022.140228
Keywords Iron Aluminides Microstructure Mechanical properties corrosion resistance
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Abstract

Iron aluminides are iron-aluminum alloys that have excellent resistance to oxidation at high temperatures with low density, high resistance/weight ratio and a low manufacturing cost. Due to its characteristics, these alloys are presented as an option to replace stainless steels in certain applications. This works intends report the casting process and subsequent analyses involving microstructure, mechanical properties, and corrosion resistance of two Fe-Al-C alloys (Fe-11wt%Al and Fe-25wt%Al, containing 0.31-0.37%C), which were prepared in an induction furnace and poured in a permanent mold. Samples of these alloys were characterized and presented elevated hardness values of 37 HRC (alloy Fe-11wt%Al) and 49.6HRC (alloy Fe-25wt%Al) and microstructure with aluminides type Fe3Al and FeAl and also carbides type K. The Fe-11wt%Al alloy exhibited superior resistance to uniform corrosion, although both Fe-Al-C alloys exhibited significantly higher corrosion rates compared to a binary iron aluminide in 0.5M H2SO4 containing naturally dissolved oxygen.
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Bibliography

[1] Zamanzade, M., Barnoush, A. & Motz, C. (2016). A review on the properties of iron aluminide intermetallics. Crystals. 6(10), 1-29. DOI: 10.3390/cryst6010010.
[2] Stoloff, N.S. (1998). Iron aluminides: present status and future prospects. Materials Science and Engineering: A. 258(1-2), 1-14. DOI: 10.1016/S0921-5093(98)00909-5.
[3] Cinca, N., Lima, C.R.C. & Guilemany, J.M. (2013). An overview of intermetallics research and application: Status of thermal spray coatings. Journal of Materials Research and Technology. 2(1), 75-86. DOI: 10.1016/j.jmrt.2013.03.013.
[4] Palm, M., Stein, F. & Dehm, G. (2019). Iron Aluminides. Annual Review of Materials Research. 49, 297-326. DOI: 10.1146/annurev-matsci-070218-125911.
[5] Deevi, S.C. & Sikka, V.K. (1996). Nickel and iron aluminides: an overview on properties, processing, and applications. Intermetallics. 4(5) 357-375. DOI: 10.1016/0966-9795(95)00056-9.
[6] Shankar Rao, V., Baligidad, R. G. & Raja, V. S. (2002). Effect of carbon on corrosion behaviour of Fe3Al intermetallics in 0.5N sulphuric acid. Corrosion Science. 44, 521-533. DOI: 10.1016/S0010-938X(01)00084-1.
[7] Shankar Rao, V. (2005). Repassivation behaviour and surface analysis of Fe3Al based iron aluminide in 0.25M H2SO4. Corrosion Science. 47, 183-194. DOI: 10.1016/j.corsci.2004.05.014.
[8] Nigam, A.K., Balasubramaniam, R., Bhargava, S. & Baligidad, R.G. (2006). Electrochemical impedance spectroscopy and cyclic voltammetry study of carbon-alloyed iron aluminides in sulfuric acid. Corrosion Science. 48(7), 1666-1678. DOI: 10.1016/j.corsci.2010.05.006.
[9] Schneider, A., Falat, L., Sauthoff, G. & Frommeyer, G. (2005). Microstructures and mechanical properties of Fe3Al-based Fe-Al-C alloys. Intermetallics. 13(12), 1322-1331. DOI: 10.1016/j.intermet.2005.01.0.
[10] Brito, P., Pinto, H., Klaus, M., Genzel, C. & Kaysser-Pyzalla, A. (2010). Internal stresses and textures of nanostructured alumina scales growing on polycrystalline Fe3Al alloy. Powder Diffraction. 25(2), 114-118. DOI: 10.1154/1.3402764
[11] Brito, P., Schuller, E., Silva, J., Campos, T.R., Araújo, C.R. & Carneiro, J.R. (2017). Electrochemical corrosion behaviour of (100), (110) and (111) Fe3Al single crystals in sulphuric acid. Corrosion Science. 126, 366-373. DOI: 10.1016/j.corsci.2017.05.029.
[12] Brito, P.P., Carvalho Filho, C.T. & Oliveira, G.A. (2020). Electrochemical corrosion behavior of iron aluminides in sulfuric acid. Materials Science Forum. 1012, 395-400. DOI: 10.4028/www.scientific.net/MSF.1012.395.
[13] Hernández-Hernández, M., Liu, H. B., Alvarez-Ramirez, J. & Espinosa-Medina, M. A. (2017). Corrosion behavior of Fe-40at.%Al-Based intermetallic in 0.25M H2SO4 solution. Journal of Materials Engineering and Performance. 26, 5983-5996. DOI: 10.1007/s11665-017-3036-5.

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Authors and Affiliations

A.P. Silva
1
ORCID: ORCID
P.P. Brito
1
N. Martins
1
  1. PUC Minas, Brazil

Anticorrosion Properties and Morphology of Phosphate Coating Formed on Nitrided Surface of 42CrMo4 Steel

A. Kapuściński L. Kwiatkowski P. Wach A. Mazurek R. Diduszko
Archives of Metallurgy and Materials | 2020 | vol. 65 | No 1 | 471-477 | DOI: 10.24425/amm.2020.131749
Keywords corrosion resistance phosphating gas nitriding γ' nitrides ε nitrides
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Abstract

The subject of the study concerns the enhancement of corrosion and wear resistance of nitrided 42CrMo4 steel by the formation of zinc phosphate top layer. The present work is aimed at the assessment of the effect of increasing thickness of nitrided layer from approximately 2 µm to 16 µm on the morphology and properties of zinc phosphate coating. XRD analysis showed that along with the increase in the thickness of the nitrides layer, a change in the phase composition was observed. SEM/EDS examination revealed that top layer consists of crystalline zinc phosphate coating. The shape and size of crystals does not significantly depend on a thickness of nitrides layer but corrosion resistance determined by potentiodynamic method in 0.5M NaCl increased with an increase of thickness of a “white layer”. Similarily the wear resistance determined by the 3-cone-roll test was also the highest for 16 µm nitride layer.

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Authors and Affiliations

A. Kapuściński
L. Kwiatkowski
P. Wach
A. Mazurek
R. Diduszko

Assessment of the Corrosion Resistance, Properties and the Structure of Tig Braze Welded Galvanised Steel Sheets

J. Górka
Archives of Metallurgy and Materials | 2020 | vol. 65 | No 1 | 47-54 | DOI: 10.24425/amm.2019.131095
Keywords braze welding TIG galvanised steel corrosion resistance galvanostatic tests
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Abstract

The article discusses tests concerning the assessment of the corrosion resistance, properties and the structure of TIG braze welded galvanised steel sheets. Test butt joints were made of 0.9 mm thick galvanised car body steel sheets DC04 (in accordance with EN 10130), using a robotic welding station and a CuSi3Mn1 braze (in accordance with PN-EN 13347:2003) wire having a diameter of 1.0 mm. The research-related tests aimed to optimise braze welding parameters and the width of the brazing gap. The test joints were subjected to visual tests, macro and microscopic metallographic tests, hardness measurements as well as tensile and bend tests. The corrosion resistance of the joints was identified using the galvanostatic method. The tests revealed that it is possible to obtain high quality joints made of galvanised car body steel sheets using the TIG braze welding process, the CuSi3Mn1 braze and a brazing gap, the width of which should be restricted within the range of 0.4 mm to 0.7 mm. In addition, the joints made using the aforesaid parameters are characterised by high mechanical properties. The minimum recommended heat input during process, indispensable for the obtainment of the appropriate spreadability of the weld deposit should be restricted within the range of 50 kJ/mm to 70 kJ/mm. At the same time, the aforesaid heat input ensures the minimum evaporation of zinc. Joints made using the TIG braze welding method are characterised by high resistance to electrochemical corrosion. The galvanostatic tests did not reveal any traces of corrosion in the joint area.

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Authors and Affiliations

J. Górka
ORCID: ORCID

Investigations of TiO₂, Ti/TiO₂, and Ti/TiO₂/Ti/TiO₂ coatings produced by ALD and PVD methods on Mg-(Li)-Al-RE alloys substrates

Marcin Staszuk Łukasz Reimann Aleksandra Ściślak Justyna Jaworska Mirosława Pawlyta Tomasz Mikuszewski Dariusz Kuc Tomasz Tański Antonín Kříž
Bulletin of the Polish Academy of Sciences Technical Sciences | 2021 | 69 | 5 | e137549 | DOI: 10.24425/bpasts.2021.137549
Keywords ALD PVD TiO₂ magnesium alloys corrosion resistant
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Abstract

Magnesium alloys have recently become increasingly popular in many sectors of the industry due to their unique properties, such as low density, high specific strength, vibration damping ability along with their recyclability and excellent machinability. Nowadays, thin films have been attracting more attention in applications that improve mechanical and corrosion properties. The following alloys were used for the coated Mg-Al-RE and the ultra-light magnesium-lithium alloy of the Mg-Li-Al-RE type. A single layer of TiO2 was deposited using the atomic layer deposition ALD method. Multiple layers of the Ti/TiO₂ and Ti/TiO₂/Ti/TiO₂ type were obtained by the MS-PVD magnetron sputtering technique. Samples were investigated by scanning and a transmission electron microscope (SEM, TEM) and their morphology was studied by an atomic forces microscope (AFM). Further examinations, including electrochemical corrosion, roughness and tribology, were also carried out. As a result of the research, it was found that the best electrochemical properties are exhibited by single TiO2 layers obtained by the ALD method. Moreover, it was found that the Ti/TiO₂/Ti/TiO₂ double film has better properties than the Ti/TiO₂ film.
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Bibliography

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Authors and Affiliations

Marcin Staszuk
1
ORCID: ORCID
Łukasz Reimann
1
Aleksandra Ściślak
1
Justyna Jaworska
1
Mirosława Pawlyta
1
Tomasz Mikuszewski
2
Dariusz Kuc
2
Tomasz Tański
1
ORCID: ORCID
Antonín Kříž
3
  1. Silesian University of Technology, Faculty of Mechanical Engineering, ul. Konarskiego 18a, 44-100 Gliwice, Poland
  2. Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, ul. Krasińskiego 8, Katowice, Poland
  3. University of West Bohemia, Faculty of Mechanical Engineering, Univerzitni 22 St., 30614 Plzen, Czech Republic

Mechanical Properties, Machinability and Corrosion Resistance of Zamak5 Alloyed by Copper

Ahmad Al Aboushi Safwan Al-Qawabah Nabeel Abu Shaban Aiman Eid Al-Rawajfeh
Archives of Metallurgy and Materials | 2023 | vol. 68 | No 4 | 1391-1399 | DOI: 10.24425/amm.2023.146205
Keywords Zamak5 Machinability Mechanical behavior Copper corrosion resistance
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Abstract

Due the importance of using commercially Zamak5 in a wide range in industrial applications, however, this study was focused on the enhancing its machining issues by adding pure copper, so the effect of the addition of (1 to 3)% Cu to commercially Zamak5 on its mechanical properties, microhardness, surface texture and corrosion resistance was investigated. A CNC machining tests, microhardness tests, corrosion test, compression test, and microhardness test were performed. It was found that there is an enhancement on the flow stress at 0.2 strain of about 19% for 3% Cu addition followed by 17% and 15% in the case of 2% Cu and 1% Cu respectively. There was an enhancement in microhardness of about 11.6% in the case of 3% Cu addition. The surface finish was improved by increasing the number of copper contents (1 to 3)% to the base material Za5. Polarization measurements revealed that 3% alloy specimen inhibit the corrosion by more than 70% compared with the blank sample.
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Authors and Affiliations

Ahmad Al Aboushi
1
ORCID: ORCID
Safwan Al-Qawabah
1
ORCID: ORCID
Nabeel Abu Shaban
1
ORCID: ORCID
Aiman Eid Al-Rawajfeh
2
ORCID: ORCID
  1. Al-Zaytoonah University of Jordan, Mechanical Engineering Department , Amman, Jordan
  2. Tafila Technical University, 66110 Tafila, Jordan

Effect of Nb and Zr alloying additives on structure and properties of Ti-Ta-Nb-Zr alloys for medical applications

G. Dercz I. Matuła K. Prusik J. Zając M. Szklarska A. Kazek-Kęsik W. Simka
Archives of Metallurgy and Materials | 2023 | vol. 68 | No 3 | 1137-1142 | DOI: 10.24425/amm.2023.145485
Keywords Titanium-based alloys corrosion resistance biomaterials arc-melting structure
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Abstract

This work investigated two titanium-based alloys with a constant tantalum content and variable contents of alloy additives – niobium and zirconium. The Ti-30Ta-10Zr-20Nb (wt.%) and Ti-30Ta-20Zr-10Nb (wt.%) alloys were obtained using a combination of powder metallurgy and arc melting methods. The influence of alloying additives on the structure and properties of the Ti-Ta-Nb-Zr system was studied using, among others: X-ray diffraction and scanning electron microscopy. The X-ray diffraction confirmed the single-β-phase structure of both alloys. In addition, the microscopic analysis revealed that a higher amount of zirconium favoured the formation of larger grains. However, the microhardness analysis indicated that the alloy with the higher niobium content had the higher microhardness. Importantly, the in vitro corrosion study revealed that the addition of niobium promoted the better corrosion resistance of the investigated alloy.
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Authors and Affiliations

G. Dercz
1
ORCID: ORCID
I. Matuła
1
ORCID: ORCID
K. Prusik
1
ORCID: ORCID
J. Zając
1
M. Szklarska
1
ORCID: ORCID
A. Kazek-Kęsik
2
ORCID: ORCID
W. Simka
2
ORCID: ORCID
  1. Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty Street 1 A, 41-500 Chorzów, Poland
  2. Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland

The Effect of Glow Discharge Nitriding on the Corrosion Resistance of Stainless Steel Orthodontic Arches in Artificial Saliva Solution

J. Kamiński K. Małkiewicz J. Rębiś T. Wierzchoń
Archives of Metallurgy and Materials | 2020 | vol. 65 | No 1 | 375-384 | DOI: 10.24425/amm.2020.131740
Keywords steel orthodontic arch-wires artificial saliva glow-discharge nitriding corrosion resistance
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Abstract

The oral cavity due to its temperature fluctuations, changing pH, high humidity, action of mechanical forces and the presence of microorganisms is a favorable environment for degradation of dental materials. The paper presents comparative results on orthodontic arch-wires AISI304 steel before and after low temperature plasma nitriding carried out at cathodic potential (conventional) and at plasma potential, i.e. in a process incorporating an active screen. Corrosion resistance test on nitrided layers produced on stainless steel were carried out via electrochemical impedance spectroscopy (EIS) and the potentiodynamic method in non-deaerated artificial saliva solution at 37°C. The results were complemented with analysis of the structure, surface topography and microhardness. The results showed an increase in corrosion resistance of AISI304 steel after conventional glow-discharge nitriding.

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Authors and Affiliations

J. Kamiński
K. Małkiewicz
J. Rębiś
T. Wierzchoń
ORCID: ORCID

Influence of annealing conditions on changes of the structure and selected properties of Al88Y7Fe5 and Al88Y6Fe6 alloys

Rafał Babilas Monika Spilka Wojciech Łoński Adrian Radoń Mariola Kądziołka-Gaweł Piotr Gębara
Bulletin of the Polish Academy of Sciences Technical Sciences | 2023 | 71 | 2 | e144614 | DOI: 10.24425/bpasts.2023.144614
Keywords Al-Y-Fe metallic glasses heat treatment structural tests corrosion resistance magnetic properties
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Abstract

Al-Y-Fe amorphous and nanocrystalline alloys are characterized by a unique collection of diverse properties that are influenced by various factors, including heat treatment. In this paper, the effect of heat treatment on the structural changes and selected properties of Al-Y-Fe metallic glasses in the as-spun state is investigated. The structure of the Al88Y7Fe5 and Al88Y6Fe6 alloys was examined by X-ray diffraction (XRD) and Mössbauer spectroscopy (MS). The corrosion resistance of the samples was characterized using polarization tests in a 3.5% NaCl solution at 25 °C. The effect of sodium chloride on the surface was studied with scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The magnetic properties of Al-based alloys were explored using a vibrating sample magnetometer (VSM). It was revealed that the tested alloys show better properties after annealing than in the as-spun state. The annealing of the Al88Y7Fe5 and Al88Y6Fe6 alloys in the temperature range of 200 to 300 °C improved the magnetic properties and corrosion resistance of these materials. After 3,600 s, the better EOCP values were recorded for the Al88Y6Fe6 and Al88Y7Fe5 alloys after annealing at 300 °C and 200 °C, adequately. On the basis of the polarization tests, it was concluded that the electrochemical properties are better for Al88Y6Fe6 alloys after annealing at 300 °C.
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Authors and Affiliations

Rafał Babilas
1
ORCID: ORCID
Monika Spilka
1
ORCID: ORCID
Wojciech Łoński
1
Adrian Radoń
2
Mariola Kądziołka-Gaweł
3
Piotr Gębara
4
  1. Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland
  2. Łukasiewicz Research Network, Institute of Non-Ferrous Metals, Sowinskiego 5, 44-100 Gliwice, Poland
  3. Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
  4. Department of Physics, Czestochowa University of Technology, Armii Krajowej 19, 42-200 Czestochowa, Poland

Effect of spray distance on the microstructure and corrosion resistance of WC - based coatings sprayed by HVOF

Ewa Jonda Leszek Łatka Artur Maciej Marcin Godzierz Klaudiusz Gołombek Andrzej Radziszewski
Bulletin of the Polish Academy of Sciences Technical Sciences | 2023 | 71 | 2 | e144610 | DOI: 10.24425/bpasts.2023.144610
Keywords WC-based powders AZ31 magnesium alloy High Velocity Oxy Fuel microstructure corrosion resistance
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Abstract

Cermet coatings provide protection against aggressive operating environment of machine and device elements, such as corrosion, wear or high-temperature conditions. Currently WC-based cermet coatings are frequently used in the different industry branches. In this work, conventional WC-based powders (WC-Co and WC-Co-Cr) were sprayed with High Velocity Oxy Fuel (HVOF) onto AZ31 magnesium alloy with different spray distances (320 and 400 mm). The aim of the research was to investigate the effect of the spray distance on the microstructure of the coatings, phase composition and electrochemical corrosion resistance. Results revealed that higher spray distance results in greater porosity, 1.9% and 2.3% for 320 mm and 2.8% and 3.1% for 400 mm in case of WC-Co and WC-Co-Cr coatings, respectively. Also the influence has been observed for coatings microhardness, c.a. 1300 HV0.3 for shorter spray distance, whereas for longer one it was less than 1100 HV0.3. The corrosion resistance estimated in potentiodynamic polarization measurements was the best for WC-Co-Cr coating deposited from the shorter spray distance, corrosion current density was equal to 2.9 µA·cm-2 and polarization resistance was equal to 8424 Ω∙cm2.
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Authors and Affiliations

Ewa Jonda
1
ORCID: ORCID
Leszek Łatka
2
ORCID: ORCID
Artur Maciej
3
Marcin Godzierz
4
Klaudiusz Gołombek
5
ORCID: ORCID
Andrzej Radziszewski
6
  1. Silesian University of Technology, Faculty of Mechanical Engineering, Department of Engineering Materials and Biomaterials, ul. Konarskiego 18a, 44-100 Gliwice, Poland
  2. Wroclaw University of Science and Technology, Faculty of Mechanical Engineering, Department of Metal Forming, Welding and Metrology, ul. Łukasiewicza 5, 50-371 Wroclaw, Poland
  3. Silesian University of Technology, Faculty of Chemistry, Department of Inorganic and Analytical Chemistry and Electrochemistry, ul. Krzywoustego 6B, 44-100 Gliwice, Poland
  4. Polish Academy of Sciences, Centre of Polymer and Carbon Materials, ul. M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland
  5. Silesian University of Technology, Laboratory of the Testy Materials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland
  6. “RESURS” Company, A. Radziszewski, ul. Czarodzieja 12, 03-116 Warszawa, Poland

Corrosion protection of 316L stainless steel by (PVDF/HA) composite coating using a spinning coating technique. = 38

Asra Ali Hussein Nawal Mohammed Dawood Ammar Emad Al-kawaz
Bulletin of the Polish Academy of Sciences Technical Sciences | 2021 | 69 | 2 | e136810 | DOI: 10.24425/bpasts.2021.136810
Keywords 316L SS polyvinylidene fluoride hydroxyapatite Hank’s solution corrosion resistance
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Abstract

Polymer coatings are increasingly used in varied fields and applications from simple coatings of barrier to intricated nanotechnology based composite. In the present study, polyvinylidene fluoride(PVDF)/Hydroxyapatite (HA )coatings were produced by spin coating technique over 316L SS. Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) were used to observe the coated 316L SS substrates surface morphology. The corrosion protection efficiency of pure polyvinylidene fluoride and polyvinylidene fluoride/HA nanocomposite coatings on 316L SS was inspected using potentiodynamic polarization along with the ions release techniques in Hank’s solution. A superior biocompatibility and an improved protection performance against corrosion were obtained for the 316L SS samples with nanocomposite coatings compared with the pure polyvinylidene fluoride coatings and pristine 316L SS counterparts. The 316L SS samples coated by PVDF/HA nanocomposite showed enhanced corrosion protection within Hank’s solution. The corrosion of 316L SS samples within Hank’s solution increased from 92.99% to 99.99% when using 3wt% HA due to increasing the PVDF inhibition efficiency. Good agreements in the electrochemical corrosion parameters were obtained from using ions release and potentiodynamic polarization tests.
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Authors and Affiliations

Asra Ali Hussein
1
Nawal Mohammed Dawood
2
Ammar Emad Al-kawaz
1
  1. College of Materials Engineering, Polymer and Petrochemical Industries Department, Babylon University, Iraq
  2. College of Materials Engineering, Metallurgical Engineering department, Babylon University, Iraq

Investigations of CrN/TiO2 coatings obtained in a hybrid PVD/ALD method on Al-Si-Cu alloy substrate

Marcin Staszuk
Bulletin of the Polish Academy of Sciences Technical Sciences | 2023 | 71 | 2 | e144622 | DOI: 10.24425/bpasts.2023.144622
Keywords ALD PVD hybrid coatings TiO2 aluminum alloys corrosion resistant
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Abstract

The paper addresses an important scientific topic from the utilitarian point of view concerning the surface treatment of Al-Si-Cu aluminum alloys by PVD/ALD hybrid coating deposition. The influence of the conditions of deposition of titanium oxide in CrN/TiO2 coatings on their structure and properties, in particular corrosion resistance, were investigated. The TiO2 layer was produced by the atomic layer deposition (ALD) method with a variable number of cycles. Structural investigations were performed using scanning and transmission electron microscopy (SEM and TEM), atomic force microscopy (AFM), and Raman spectroscopy methods. Electrochemical properties were analyzed using potentiodynamic and electrochemical impedance spectroscopy (EIS) methods. The CrN/TiO2 hybrid coating with titanium oxide deposited at 500 ALD cycles showed the best corrosion properties. It was also found that the prerequisite for obtaining the best electrochemical properties was the amorphous structure of titanium oxide in the tested hybrid coatings. The high tribological properties of the tested coatings were also confirmed.
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Authors and Affiliations

Marcin Staszuk
1
ORCID: ORCID
  1. Silesian University of Technology, Faculty of Mechanical Engineering, Konarskiego 18a St., 44-100 Gliwice, Poland

The use of granite dust as an effective filler of concrete mixtures

Grzegorz Prokopski Andriy Huts Vitaliy Marchuk
Archives of Civil Engineering | 2021 | vol. 67 | No 4 | 159-174 | DOI: 10.24425/ace.2021.138492
Keywords granite dust concrete mixture water absorption compressive strength corrosion resistance frost resistance
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Abstract

The article presents the results of experimental studies of the influence of granite dust on the properties and durability of concrete. The use of industrial waste – granite dust, in the processing of granite into crushed stone, at the same time allows the rational use of natural resources and solve environmental problems. The possibility of improving the construction and technical properties of concrete filled with granite dust is considered. Experimental-statistical models of technological and physical-mechanical properties of concretes are presented and analyzed, ways of their improvement are shown. The complex of strength properties, water absorption, frost resistance, and durability of such concrete have been studied. The studied concrete are characterized by a more intensive set of strength and obtaining mixtures of “sticky” consistency. Due to the partial replacement of sand by granite dust, the microstructure of the cement matrix is compacted, which is the main reason for reducing porosity and increasing the durability of structures based on the proposed concrete.
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Authors and Affiliations

Grzegorz Prokopski
1
ORCID: ORCID
Andriy Huts
1
ORCID: ORCID
Vitaliy Marchuk
2
ORCID: ORCID
  1. Rzeszów University of Technology, The Faculty of Civil and Environmental Engineering and Architecture, Poznanska 2, 35-084 Rzeszów, Poland
  2. National University of Water and Environmental Engineering, Institute of Building and Architecture, Chornovola 49, 33-000 Rivne, Ukraine

Improved Thermal Stability of Al-Si Alloy Coated Steel Sheet with Cr Thin Film Deposition

Jae-Hyeon Kim Jung-Ha Lee Seung-Beop Lee Sung-Jin Kim Min-Suk Oh
Archives of Metallurgy and Materials | 2024 | vol. 69 | No 1 | 117-121 | DOI: 10.24425/amm.2024.147798
Keywords Aluminized steel physical vapor deposition Cr thin film corrosion resistance thermal stability
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Abstract

We investigated the effect of Cr thin film deposition on the thermal stability and corrosion resistance of hot-dip aluminized steel. A high-quality Cr thin film was deposited on the surface of the Al-9 wt. % Si-coated steel sheets by physical vapor deposition. When the Al-Si coated steel sheets were exposed to a high temperature of 500℃, Fe from the steel substrate diffused into the Al-Si coating layer resulting in discoloration. However, the highly heat-resistant Cr thin film deposited on the Al-Si coating prevented diffusion and surface exposure of Fe, improving the heat and corrosion resistances of the Al-Si alloy coated steel sheet.
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Authors and Affiliations

Jae-Hyeon Kim
1
Jung-Ha Lee
2
Seung-Beop Lee
2
Sung-Jin Kim
3
ORCID: ORCID
Min-Suk Oh
1
ORCID: ORCID
  1. Jeonbuk National University, Division of Advanced Materials Engineering And Research Center For Advanced Materials Development, Jeonju, Republic of Korea
  2. Jeonbuk National University, School of International Engineering And Science, Jeonju, Republic of Korea
  3. Sunchon National University, Department of Advanced Materials Engineering, Sunchon, Republic of Korea

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