INVESTIGATION OF HOT CORROSION RESISTANCE OF PLASMA SPARAYED YSZ-CERIA TBC IN Na2SO4+V2O5 AT 1050 °C

被引：0

作者：

Saremi, M. ^{[1
]}

Habibi, M. H. ^{[1
]}

机构：

[1] Univ Tehran, Mat Sci & Engn Dept, Tehran, Iran

来源：

TMS2011 SUPPLEMENTAL PROCEEDINGS, VOL 1: MATERIALS PROCESSING AND ENERGY MATERIALS | 2011年

关键词：

Hot Corrosion1; TBC2; Yttria Stabilized Zirconia (YSZ)3; Cerium Oxide (CeO2)4; THERMAL BARRIER COATINGS; ZIRCONIA; YTTRIA; TEMPERATURE; BEHAVIOR;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this research, the hot corrosion behavior of the following three types of coatings was investigated; (1) conventional YSZ; (2) YSZ+CeO2 (composite layer of ceria and YSZ) and (3) CeO2/YSZ (over layer of ceria on YSZ). Hot corrosion tests were carried out on the surface of the coatings in molten salt (Na2SO4 + V2O5) at 1050 degrees C for 40 hours. The microstructure, morphology and chemical composition of the surfaces and the cross-sections of the coatings were examined by scanning electron microscopy (SEM) equipped with energy dispersive spectrometer (EDS). X-ray diffraction (XRD) was used to determine the crystalline structure of the coatings and hot corrosion products. Based on microscopic observations (YVO4 crystals formation and YSZ spallation) and the amount of phase transformation (tetragonal to monoclinic ZrO2), CeO2/YSZ provides the best hot corrosion resistance and conventional YSZ provides the least.

引用

页码：429 / 437

页数：9

共 9 条

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