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
来源：
CORROSION SCIENCE | 2020年 / 173卷
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.
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页数：9
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