TY - JOUR N2 - Polyester coatings are among the most commonly used types of powder paints and present a wide range of applications. Apart from its decorative values, polyester coating successfully prevents the substrate from environmental deterioration. This work investigates the cavitation erosion (CE) resistance of three commercial polyester coatings electrostatic spray onto AW-6060 aluminium alloy substrate. Effect of coatings repainting (single- and double-layer deposits) and effect of surface finish (matt, silk gloss and structural) on resistance to cavitation were comparatively studied. The following research methods were used: CE testing using ASTM G32 procedure, 3D profilometry evaluation, light optical microscopy, scanning electron microscopy (SEM), optical profilometry and FTIR spectroscopy. Electrostatic spray coatings present higher CE resistance than aluminium alloy. The matt finish double-layer (M2) and single-layer silk gloss finish (S1) are the most resistant to CE. The structural paint showed the lowest resistance to cavitation wear which derives from the rougher surface finish. The CE mechanism of polyester coatings relies on the material brittle-ductile behaviour, cracks formation, lateral net-cracking growth and removal of chunk coating material and craters’ growth. Repainting does not harm the properties of the coatings. Therefore, it can be utilised to regenerate or smother the polyester coating finish along with improvement of their CE resistance. L1 - http://www.czasopisma.pan.pl/Content/119844/PDF/27_02191_Bpast.No.69(4)_27.08.21_druk.pdf L2 - http://www.czasopisma.pan.pl/Content/119844 PY - 2021 IS - 4 EP - e137519 DO - 10.24425/bpasts.2021.137519 KW - polyester powder coatings KW - cavitation erosion KW - profilometry KW - spectroscopy KW - wear mechanism KW - AW-6060 aluminium alloy A1 - Szala, Mirosław A1 - Świetlicki, Aleksander A1 - Sofińska-Chmiel, Weronika VL - 69 DA - 01.06.2021 T1 - Cavitation erosion of electrostatic spray polyester coatings with different surface finish SP - e137519 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/119844 T2 - Bulletin of the Polish Academy of Sciences Technical Sciences ER -