摘要
Chemical reaction between (Y 0.8 Gd 0.2 ) 3 Al 5 O 12 (GYAG) and calcium-magnesium- alumina-silicate (CMAS) with four different compositions was investigated. The GYAG revealed excellent chemical stability with molten CMAS even after 24 h heat-treatment at 1250 °C. A GYAG layer was sprayed onto an yttria stabilized zirconia (YSZ) thermal barrier coating (TBC) by plasma spray and the thermal cycling behavior and resistance to CMAS corrosion of the coating system were researched. The GYAG/YSZ TBC system exhibited a lifetime of more than 1500 h during thermal cycling testing at 1100 °C. Also, the GYAG/YSZ TBC has shown good resistance to CMAS corrosion at 1250 °C, mainly due to the chemical stability of GYAG to CMAS and dense lamellar structure of the GYAG layer. In addition, the infiltration of CMAS was further prohibited by the Ca 4 Y 6 (SiO 4 ) 6 O and CaAl 2 Si 2 O 8 phases generated from the reaction of (Y,Gd)AlO 3 phase in the coating with the molten CMAS.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 8138-8144 |
| 页数 | 7 |
| 期刊 | Ceramics International |
| 卷 | 45 |
| 期 | 7 |
| DOI | |
| 出版状态 | 已出版 - 5月 2019 |
指纹
探究 'Corrosion resistant plasma sprayed (Y 0.8 Gd 0.2 ) 3 Al 5 O 12 /YSZ thermal barrier coatings towards molten calcium-magnesium-alumina-silicate' 的科研主题。它们共同构成独一无二的指纹。引用此
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver