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

页码：1874 / 1879

页数：6

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