Study on water corrosion behavior of ZrSiO4 materials

被引：18
|
作者：
Liu, Ling [1 ,2 ]
Zheng, Wei [1 ,2 ]
Ma, Zhuang [1 ,2 ]
Liu, Yanbo [1 ,2 ]
机构：
[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
[2] Natl Key Lab Sci & Technol Mat Shock & Impact, Beijing 100081, Peoples R China
来源：
JOURNAL OF ADVANCED CERAMICS | 2018年 / 7卷 / 04期
基金：
中国国家自然科学基金;
关键词：
ZrSiO4; SiCf; SiC substrate; environmental barrier coating (EBC); water vapor corrosion behavior; ENVIRONMENTAL BARRIER COATINGS; SIC/SIC COMPOSITES; OXIDATION BEHAVIOR; SILICON-NITRIDE; TEMPERATURE; MULLITE;
D O I：
10.1007/s40145-018-0283-3
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：
ZrSiO4 bulk was prepared by pressureless sintering process and ZrSiO4 coating was deposited on the SiCf/SiC substrate using air plasma method. The microstructures of ZrSiO4 bulk and ZrSiO4 coating are both dense. A preliminary study of a water vapor corrosion test for ZrSiO4 bulk and ZrSiO4 coating was performed under the conditions of 1.013x10(5) Pa, 90%H2O/10%O-2, 1300 degrees C, and low gas velocity. Results show that some pores appear on the surface of the ZrSiO4 bulk. The main crystal phase is ZrO2 and the weight loss of ZrSiO4 bulk is only 0.236 mg/cm(2) after corrosion. The ZrSiO4 coating peels off from the substrate after 109 h. The number and intensity of diffraction peaks of ZrO2 in the coating increase, and the major crystal phase of the coating is still ZrSiO4. A porous microstructure accompanied with cracks is observed on the surface of ZrSiO4 coating after corrosion.
引用
收藏
页码：336 / 342
页数：7
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