Investigation on vanadium carbide transformations in M23C6 carbide by experimental observation and crystallographic analysis
Investigation on vanadium carbide transformations in M23C6 carbide by experimental observation and crystallographic analysis
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通过实验观察和晶体分析研究M23C6碳化物中碳化钒的转变
DOI：
10.1016/j.matchar.2020.110485
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发表时间：
2020-09
影响因子：
4.7
通讯作者：
Liu C. -M.
中科院分区：
文献类型：
--
作者：
An F. -C.;Wang J. -J.;Zhao S. X.;Yuan G.;Liu C. -M.
采用高分辨透射显微镜（HRTEM）和晶体学分析方法研究了M23 C6碳化物中钒（V）碳化物的转变。V6 C5、V8 C7和VC在M23 C6碳化物中或附近存在，并揭示了V6 C5/M23 C6、VC/M23 C6和V8 C7/VC的取向关系。对含有一定量V的M23 C6进行了能谱分析和原子级组态分析，结果表明，随着V在M23 C6中的扩散，在M23 C6晶胞中逐渐形成V单键V原子对和局部富V畴，促进了M23 C6中钒碳化物的形成。对M23 C6中钒碳化物的晶体学分析表明，M23 C6中钒碳化物的转变是通过碳配位多面体中金属原子数从8减少到6来实现的，同时含有碳空位的V6 C5和V8 C7在M23 C6中优先析出。
An investigation based on high-resolution transmission microscopy (HRTEM) and crystallographic analysis was performed to gain insights into vanadium (V) carbide transformations in M23C6carbide. Vanadium carbides including V6C5, V8C7and VC were observed in or adjacent to M23C6carbides, and the orientation relationships for V6C5/M23C6, VC/ M23C6and V8C7/VC were revealed. Energy dispersive spectrometry (EDS) and atomic-scale configuration analysis on M23C6contained a certain amount of V indicated that Vsingle bondV atomic pair and local V-rich domain were gradually formed in M23C6cell as the diffusion of V in M23C6, contributing to formation of vanadium carbides in M23C6. Crystallographic analysis on vanadium carbides observed in M23C6clarified that the mechanism of vanadium carbide transformations in M23C6was fulfilled by decreasing of metal atom number in the carbon coordination polyhedron from eight to six, as well that V6C5and V8C7containing carbon vacancies precipitated preferentially in M23C6.
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M23C6（M=Fe、Cr、Mn）型多元碳化物的力学性能和电子结构
影响因子：
6.2
作者：
Jiang, Yehua;Xing, Ji;ong;Zhou, Rong;Feng, Jing
通讯作者：
Feng, Jing
镍基单晶高温合金中M23C6碳化物中金属元素的位点偏好
影响因子：
8.4
作者：
Xiang Sisi;Mao Shengcheng;Shen Zhenju;Long Haibo;Wei Hua;Ma Shiyu;Zhang JianXin;Chen Yanhui;Zhang Jianfei;Zhang Bin;Liu Yinong
通讯作者：
Liu Yinong
影响因子：
1.2
作者：
V. Kraposhin;S. Kondrat’ev;A. Talis;G. Anastasiadi
通讯作者：
V. Kraposhin;S. Kondrat’ev;A. Talis;G. Anastasiadi
DOI：
10.1107/s2053273314015733
发表时间：
2014-11
期刊：
Acta Crystallographica Section A
影响因子：
--
作者：
A. Talis;V. Kraposhin
通讯作者：
A. Talis;V. Kraposhin
影响因子：
3.1
作者：
T. Jo;Jeong Hun Lim;Y. Kim
通讯作者：
T. Jo;Jeong Hun Lim;Y. Kim