Hot corrosion behaviour of plasma sprayed YSZ/LaMgAl11O19 composite coatings in molten sulfate-vanadate salt

被引：107

作者：

Chen, Xiaolong ^{[1
,2
]}

Zhao, Yu ^{[1
,2
]}

Gu, Lijian ^{[1
,2
]}

Zou, Binglin ^{[1
]}

Wang, Ying ^{[1
]}

Cao, Xueqiang ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resources Utilizat, Changchun 130022, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 06期

关键词：

Ceramic matrix composites; Molten salt; Hot corrosion; Oxide coatings; THERMAL BARRIER COATINGS; LANTHANUM HEXAALUMINATE; NEXT-GENERATION; SODIUM-SULFATE; ZIRCONIA; YTTRIA; HEXALUMINATE; DEGRADATION; OXIDE; RESISTANCE;

D O I：

10.1016/j.corsci.2011.03.019

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Hot corrosion studies of thermal barrier coatings (TBCs) with different YSZ/LaMgAl11O19 (LaMA) composite coating top coats were conducted in 50 wt.% Na2SO4 + 50 wt.% V2O5 molten salt at 950 degrees C for 60 h. Results indicate that TBCs with composite coating top coats exhibit superior oxidation and hot corrosion resistances to the TBC with the traditional YSZ top coat, especially for which has a LaMA overlay. The presence of LaMA can effectively restrain the destabilization of YSZ at the expense of its own partial degradation. The hot corrosion mechanism of LaMA coating and the composite coatings have been explored. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2335 / 2343

页数：9

共 43 条

[1]

A comparative study on hot corrosion resistance of three types of thermal barrier coatings:: YSZ, YSZ + Al2O3 and YSZ/Al2O3 [J].