Development of lanthanum cerate based thermal barrier coatings with enhanced resistance to ingestion by volcanic ash particles

被引：13

作者：

Praveen, K. ^{[1
]}

Shanmugavelayutham, G. ^{[2
]}

Rao, D. Srinivasa ^{[1
]}

Sivakumar, G. ^{[1
]}

机构：

[1] Int Adv Res Ctr Powder Met & New Mat ARCI, Ctr Engn Coatings, Hyderabad 500005, Telangana, India

[2] Bharathiar Univ, Dept Phys, Plasma Proc Lab, Coimbatore 641046, Tamil Nadu, India

来源：

CORROSION SCIENCE | 2022年 / 195卷

关键词：

Lanthanum cerate; La-Ce apatite; Rare earths; Plasma spray; Volcanic ash; HIGH-TEMPERATURE ATTACK; CMAS; BEHAVIOR; YTTRIA; INFILTRATION; YSZ; CORROSION; CERAMICS; MICROSTRUCTURE; DEGRADATION;

D O I：

10.1016/j.corsci.2021.109948

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lanthanum cerate (LC) is one of the potential candidates for thermal barrier coatings (TBCs) by virtue of its high melting point and favorable thermophysical properties. Infiltration of silicate in LC coating was found to be effectively arrested by forming La-Ce apatite. To qualify LC based material for next-generation TBCs, it is essential to understand the role of rare earth oxides (REOs) dopants that can manage the thermal expansion coefficient values and provides improved performance in volcanic ash infiltration resistance. Accordingly, various REOs doped LC was synthesized, plasma sprayed to generate free-standing coupons, and evaluated their volcanic ash infiltration resistance.

引用

页数：12

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