Effect of Heat Treatment on LaTi2Al9O19-Zr0.92Y0.08O1.96 Composite Coating Powders by Air Plasma Spraying

被引：0

作者：

Yang Zesheng ^{[1
]}

Zong Pengan ^{[1
,2
]}

Huang Muzhang ^{[1
]}

Han Yi ^{[1
]}

Zhou Huajian ^{[1
]}

Feng Yingjie ^{[1
,2
]}

Zhang Peng ^{[1
]}

Wan Chunlei ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 211816, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2022年 / 51卷 / 05期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

spray drying; sol-gel; flowability; apparent density; coating; THERMAL-BARRIER COATINGS; CONDUCTIVITY; MICROSTRUCTURE; PHASE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nano/submicron scaled spraying powders of lanthanum titanium aluminum oxide LaTi2Al9O19 (LTA) toughened by yttria stabilized zirconia Zr0.92Y0.08O1.96 (YSZ) were prepared via spray drying and then calcined at different temperatures. The effect of heat treatment on the flowability, apparent density, and morphology of the spray-dried powders was investigated. Results show that the spray-dried powders have loose structure with the size of 40 similar to 80 mu m. The cohesion between LTA-YSZ particles becomes stronger after calcination. The spray-dried powders calcined at 1100 degrees C achieve the optimal spraying characteristics and morphology, and therefore are deposited via air plasma spraying (APS) to obtain LTA-YSZ coatings which show a good lamellar structure with defects.

引用

页码：1601 / 1605

页数：5

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