Approach for statistical analysis of oxide- and sulfate-induced hot corrosion of advanced alloys

被引：8

作者：

Chikhalikar, Atharva S. ^{[1
]}

Godbole, Eeshani P. ^{[1
]}

Poerschke, David L. ^{[1
]}

机构：

[1] Univ Minnesota, Dept Chem Engn & Mat Sci, 421 Washington Ave SE, Minneapolis, MN 55455 USA

来源：

CORROSION SCIENCE | 2023年 / 211卷

关键词：

C; High Temperature Corrosion; B; Image analysis; Statistics; A; Sulfates; Scanning Electron Microscopy; GAS-TURBINES; DEGRADATION; COATINGS;

D O I：

10.1016/j.corsci.2022.110892

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work develops an automated image and statistical analysis protocol to characterize and compare the effect of three deposits on the accelerated non-uniform degradation of a model alloy (FeCrAlY) at 1025 degrees C in dry air. Compared to the sample tested without a deposit, the Ca-containing mixed oxide deposit increased the frequency of oxide intrusions into the alloy. The CaSO4 and Ca-containing mixed sulfate deposits reacted with the thermally grown oxide (TGO) to form less-protective calcium aluminates and increased the roughness of the alloy-TGO interface. However, the mixed sulfate deposit melted and spread, increasing the uniformity of the attack.

引用

页数：13

共 37 条

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