Diffusion and solid solution formation between the binary carbides of TaC, HfC and ZrC
Diffusion and solid solution formation between the binary carbides of TaC, HfC and ZrC
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DOI：
10.1016/j.ijrmhm.2013.03.009
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发表时间：
2013-11-01
影响因子：
3.6
通讯作者：
Nojabayy, M.
中科院分区：
文献类型：
--
作者：
Ghaffari, S. A.;Faghihi-Sani, M. A.;Nojabayy, M.
在这项工作中，研究了 TaC-HfC、TaC-ZrC 和 HfC-ZrC 三种二元体系的相演化、固溶体形成和扩散行为。在这方面，选择TaC、HfC和ZrC的纯碳化物粉末作为起始原材料。将制备的样品在Ar气氛中在2000℃下热处理1小时。对于每个系统，选择三种组合物通过 X 射线衍射仪进行相演化研究。此外，还准备了三对样品，通过 SEM/EDX 分析进行扩散行为调查。研究发现，ZrC 在 TaC 结构中比 HfC 扩散得更快，并且在 TaC-HfC 和 TaC-ZrC 体系中形成以 TaC 为主的单相固溶体相。 (C) 2013 Elsevier Ltd. 保留所有权利。
In this work, phase evolution, solid solution formation and diffusion behavior of three binary systems, including TaC-HfC, TaC-ZrC and HfC-ZrC, were investigated. In this regard, pure carbide powders of TaC, HfC, and ZrC were selected as starting raw materials. The prepared samples were heat treated at 2000 degrees C for 1 hour in Ar atmosphere. For each system, three compositions were chosen for phase evolution investigation by X-ray diffractometer. Moreover, three couple samples were prepared for diffusion behavior survey through SEM/EDX analyses. It was found that ZrC diffuses faster in TaC structure rather than HfC and a single phase solid solution phase with hosting TaC is formed in TaC-HfC and TaC-ZrC systems. (C) 2013 Elsevier Ltd. All rights reserved.