@ARTICLE{Park_Hyun-Kuk_Consolidation_2021,
 author={Park, Hyun-Kuk and Oh, Ik-Hyun and Kim, Ju-Hun and Hong, Sung-Kil and Lee, Jeong-Han},
 volume={vol. 66},
 number={No 4},
 journal={Archives of Metallurgy and Materials},
 pages={997-1000},
 howpublished={online},
 year={2021},
 publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences},
 publisher={Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences},
 abstract={In this study, a novel composite was fabricated by adding the Hafnium diboride (HfB2) to conventional WC-Co cemented carbides to enhance the high-temperature properties while retaining the intrinsic high hardness. Using spark plasma sintering, high density (up to 99.4%) WC-6Co-(1, 2.5, 4, and 5.5 wt. %) HfB2 composites were consolidated at 1300℃ (100℃/min) under 60 MPa pressure. The microstructural evolution, oxidation layer, and phase constitution of WC-Co-HfB2 were investigated in the distribution of WC grain and solid solution phases by X-ray diffraction and FE-SEM. The WC-Co-HfB2 composite exhibited improved mechanical properties (approximately 2,180.7 kg/mm2) than those of conventional WC-Co cemented carbides. The high strength of the fabricated composites was caused by the fine-grade HfB2 precipitate and the solid solution, which enabled the tailoring of mechanical properties.},
 type={Article},
 title={Consolidation and Oxidation of Ultra Fine WC-Co-HfB2 Hard Materials by Spark Plasma Sintering},
 URL={http://www.czasopisma.pan.pl/Content/119286/PDF-MASTER/AMM-2021-4-15-Jeong-Han%20Lee.pdf},
 doi={10.24425/amm.2021.136413},
 keywords={WC cemented carbide, hafnium diboride, spark plasma sintering, oxidation, mechanical property},
}