Experimental studies on critical compositions for fabricating single-phase high entropy carbides based on the calculated phase diagram of (VNbTaMoW)0.5Cx (0 < x < 0.6)

doi:https://doi.org/10.1016/j.jeurceramsoc.2021.08.037

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 先进润滑与防护材料研究发展中心

	Experimental studies on critical compositions for fabricating single-phase high entropy carbides based on the calculated phase diagram of (VNbTaMoW)0.5Cx (0 < x < 0.6)
	Liu DQ(刘第强)2,3; Yaqing Hou 1; Zhang AJ(张爱军)3; Han JS(韩杰胜); Zhang JY(张俊彦)2,3; Meng JH(孟军虎)2,3
刊名	Journal of the European Ceramic Society
	2021
卷号	41 期号:2021 页码:7488–7497
关键词	High entropy carbides Phase diagram Single phase Four-metal compositions Three-metal compositions
DOI	https://doi.org/10.1016/j.jeurceramsoc.2021.08.037
英文摘要	In this paper, the phase diagram of (VNbTaMoW)0.5Cx (0 < x < 0.6) was first calculated. We establish the complete phase diagram in two spatial dimensions from analysis the statistics of order phase parameters. To obtain high-entropy carbides and validate the calculated results, a series of (VNbTaMoW)C were sintered at different temperature. The single-phase carbide of (VNbTaMoW)C were synthesized at 1800 ◦C, which is higher than the theoretically calculated temperature in phase diagram. The reason is that the estimated temperature was calculated by mixing entropy for experimentally reported ideal solid solution models that simplified the temperature dependent parameters. Phase composition of (VNbTaMoW)C sintered at/below 1800 ◦C agrees well with the calculation results in phase diagram. Furthermore, we have systematically investigated the single-phase formation ability of four-metal and three-metal composition based on five elements (V, Nb, Ta, Mo, W). A total of 5 types of four-metal compositions and 10 types of three-metal compositions can be generated. However, for each composition, only 4 kinds four-metal and 6 kinds three-metal compositions can form single phase carbides. Those as-prepared single-phase carbides exhibit enhanced mechanical properties compared to the calculated values according to the rule of mixtures from constituent monocarbides
语种	英语
内容类型	期刊论文
源URL	[http://ir.licp.cn/handle/362003/27902]
专题	兰州化学物理研究所_先进润滑与防护材料研究发展中心
通讯作者	Zhang AJ(张爱军); Meng JH(孟军虎)
作者单位	1.China Iron and Steel Research Institute Group, Material Digital R&D Center, 2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences 3.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics
推荐引用方式 GB/T 7714	Liu DQ,Yaqing Hou,Zhang AJ,et al. Experimental studies on critical compositions for fabricating single-phase high entropy carbides based on the calculated phase diagram of (VNbTaMoW)0.5Cx (0 < x < 0.6)[J]. Journal of the European Ceramic Society,2021,41(2021):7488–7497.
APA	Liu DQ,Yaqing Hou,Zhang AJ,Han JS,Zhang JY,&Meng JH.(2021).Experimental studies on critical compositions for fabricating single-phase high entropy carbides based on the calculated phase diagram of (VNbTaMoW)0.5Cx (0 < x < 0.6).Journal of the European Ceramic Society,41(2021),7488–7497.
MLA	Liu DQ,et al."Experimental studies on critical compositions for fabricating single-phase high entropy carbides based on the calculated phase diagram of (VNbTaMoW)0.5Cx (0 < x < 0.6)".Journal of the European Ceramic Society 41.2021(2021):7488–7497.