摘要
稀土硅酸盐陶瓷具有良好的抗水蒸气腐蚀性能和较低的热膨胀系数,被认为是下一代硅基陶瓷环障涂层候选材料。研究发现,部分稀土硅酸盐陶瓷具有较低的热导率,使得它们兼具隔热和抗腐蚀的性能,有望成为硅基陶瓷环/热障一体化涂层材料。本文评述了稀土硅酸盐陶瓷的种类、本征热学性能、力学性能以及抗低熔点氧化物熔盐和水蒸气腐蚀的研究进展,并对其未来发展方向进行了展望。
Rare earth silicates are the third generation of environmental barrier coating materials for Si-based ceramics due to their good corrosion resistance to water vapor and low thermal expansion coefficients.Recently,some investigations revealed the low thermal conductivity of some rare earth silicates and make them with good thermal and corrosion resistance properties.It highlights the rare earth silicates as an integrated environmental/thermal barrier coating for Si-based ceramics.Therefore,this work summarizes the intrinsic thermal and mechanical properties,CMAS and water vapor corrosion resistance of rare earth silicates.It can provide guidelines on the selection and optimization of rare earth silicates as integrated environmental/thermal barrier coating materials.
作者
田志林
王京阳
TIAN Zhi-Lin;WANG Jing-Yang(High-Performance Ceramics Division,Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)
出处
《现代技术陶瓷》
CAS
2018年第5期295-320,共26页
Advanced Ceramics
关键词
稀土硅酸盐
环/热障涂层
力学性能
热学性能
抗腐蚀性能
Rare earth silicate
Environmental/thermal barrier coating
Mechanical property
Thermal property
Corrosion resistance
