材料科学
陶瓷
放电等离子烧结
衍射仪
碳化物
微观结构
球磨机
扫描电子显微镜
烧结
冶金
压痕硬度
复合材料
作者
Sina Kavak,Kübra Gürcan Bayrak,Mustafa Bellek,Sıddıka Mertdinç,Faiz Muhaffel,Hasan Gökçe,Erhan Ayas,Bora Derin,M. Lütfi Öveçoğlu,Duygu Ağaoğulları
标识
DOI:10.1016/j.ceramint.2021.11.317
摘要
(HfMoTiWZr)C high entropy carbides (HEC) were prepared from the commercial carbide powders of IVB (Hf, Ti, Zr) and VIB (Mo, W) group metals of the periodic table via high energy ball milling (HEBM) and spark plasma sintering (SPS). Metal carbide powders (HfC, TiC, ZrC, Mo2C and WC) were HEBM’d for 3 h in a vibratory ball mill, and then SPS’d at different temperatures (1800, 1900, 2000 and 2100 °C). The HEBM’d powders and SPS’d ceramics were characterized in composition, density and microstructure using an X-ray diffractometer (XRD), a scanning electron microscope/energy dispersive spectrometer (SEM/EDS), a particle size analyzer and a pycnometer. Also, microhardness and sliding wear tests were conducted on the SPS’d ceramics. Based on the performed characterization, a single-phase FCC structure was observed at all sintering temperatures indicating a high entropy carbide ceramic, and they all have high hardness and wear resistance values.
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