MAX phases Hf2(SexS1_ x)C (x=0-1) and their thermal expansion behaviors

被引：7
|
作者：
Wang, Xudong [1 ,2 ]
Chen, Ke [2 ,3 ]
Li, Ziqian [2 ,4 ]
Ding, Haoming [2 ,4 ]
Song, Yujie [2 ,3 ]
Du, Shiyu [2 ,3 ]
Chai, Zhifang [2 ,3 ]
Gu, Hui [1 ]
Huang, Qing [2 ,3 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Engn Lab Adv Energy Mat, Ningbo 315201, Peoples R China
[3] Qianwan Inst CNiTECH, Ningbo 315336, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2023年 / 43卷 / 05期
基金：
中国国家自然科学基金;
关键词：
MAX phase; Chalcogen element; Thermal expansion; COATINGS; DEPOSITION; ZR2SEC; TI2ALC; TI;
D O I：
10.1016/j.jeurceramsoc.2022.12.026
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Herein, a series of chalcogen-containing MAX phases, Hf2(SexS1_x)C, were successfully synthesized, whose lattice parameter change follows the Vegard's law. The average coefficient of thermal expansion (CTE) can be continuously tuned from 7.59 mu K_ 1 to 9.93 mu K_ 1 when the occupancy rate x of Se changes from 0 to 1. The substitution of Se for S effectively soften the crystal structures that is reflected by long average M-A bond in Sealloying Hf2(SexS1_x)C. However, the CTEs along a and c axes in all Hf2(SexS1_ x)C MAX phases are almost same which may be find application in thermal barrier coating (TBC) that isotropic volume change is highly demanding.
引用
收藏
页码：1874 / 1879
页数：6
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