Improvement in hot corrosion resistance and chemical stability of YSZ by introducing a Lewis neutral layer on thermal barrier coatings

被引:18
|
作者
Song, Dowon [1 ]
Song, Taeseup [1 ]
Paik, Ungyu [1 ]
Lyu, Guanlin [2 ]
Kim, Junseong [2 ]
Jung, Yeon-Gil [2 ]
机构
[1] Hanyang Univ, Dept Energy Engn, Seoul 133791, South Korea
[2] Changwon Natl Univ, Sch Mat Sci & Engn, Chang Won 641773, Gyeongnam, South Korea
关键词
Hot corrosion; Protection layer; Thermal barrier coatings (TBC); Reaction mechanism; OXIDATION BEHAVIOR; ZIRCONIA; AL2O3; DENSE; ASH;
D O I
10.1016/j.corsci.2020.108776
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A boron-doped silica (B-SiO2) layer was coated on the surface of conventional plasma-sprayed yttria-stabilized zirconia (YSZ) coating to improve the hot corrosion resistance and chemical stability against Na2SO4 + V2O5 salts by glassification based on sol-gel process. The YSZ surface was successfully covered by the glassificated B-SiO2 with Lewis neutrality. Further destabilization of YSZ was prevented by the formation of a solid solution. Consequently, the B-SiO2 layer improved the hot corrosion resistance and chemical stability of YSZ.
引用
收藏
页数:9
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