Pursuing enhanced oxidation resistance of ZrB2 ceramics by SiC and WC co-doping

被引：24

作者：

Feng, Xiaoqiang ^{[1
,2
,3
]}

Wang, Xin ^{[1
,2
,3
]}

Liu, Yuan ^{[1
,2
,3
]}

Tian, Wei ^{[4
]}

Zhang, Min ^{[1
,2
,3
]}

Jian, Xian ^{[4
]}

Yin, Liangjun ^{[4
]}

Zhang, Linbo ^{[1
,2
,3
]}

Xie, Jianliang ^{[1
,2
,3
]}

Deng, Longjiang ^{[1
,2
,3
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Engn Res Ctr Electromagnet Radiat Control Ma, 2006 Xiyuan Rd, Chengdu 611731, Sichuan, Peoples R China

[2] Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, 2006 Xiyuan Rd, Chengdu 611731, Sichuan, Peoples R China

[3] Univ Elect Sci & Technol China, Minist Educ, Key Lab Multispectral Absorbing Mat & Struct, 2006 Xiyuan Rd, Chengdu 611731, Sichuan, Peoples R China

[4] Univ Elect Sci & Technol China, Sch Mat & Energy, 2006 Xiyuan Rd, Chengdu 611731, Sichuan, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2018年 / 38卷 / 16期

关键词：

Ultra-high temperature ceramics; Zirconium diboride; Co-doping; Oxidation resistance; TUNGSTEN CARBIDE ADDITIONS; HIGH-TEMPERATURE OXIDATION; ZIRCONIUM DIBORIDE; ZRB2-BASED COMPOSITES; BEHAVIOR; DENSIFICATION; STRENGTH; KINETICS; HAFNIUM;

D O I：

10.1016/j.jeurceramsoc.2018.07.041

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：

The oxidative degradation of ZrB2 ceramics is the main challenge for its extensive application under high temperature condition. Here, we report an effective method for co-doping suitable compounds into ZrB2 in order to significantly improve its anti-oxidation performance. The incorporation of SiC and WC into ZrB2 matrix is achieved using spark plasma sintering (SPS) at 1800 degrees C. The oxidation behavior of ZrB2-based ceramics is investigated in the temperature range of 1000 degrees C-1600 degrees C. The oxidation resistance of single SiC-doped ZrB2 ceramics is improved due to the formation of silica layer on the surface of the ceramics. As for the WC-doped ZrB2, a dense ZrO2 layer is formed which enhances the oxidation resistance. Notably, the SiC and WC co-doped ZrB2 ceramics with relative density of almost 100% exhibit the lowest oxidation weight gain in the process of oxidation treatment. Consequently, the co-doped ZrB2 ceramics have the highest oxidation resistance among all the samples.

引用

页码：5311 / 5318

页数：8

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