High temperature oxidation of Fe22Cr-alloy

被引：13

作者：

Mikkelsen, L ^{[1
]}

Larsen, PH ^{[1
]}

Linderoth, S ^{[1
]}

机构：

[1] Riso Natl Lab, Mat Res Dept, DK-4000 Roskilde, Denmark

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2001年 / 64卷 / 03期

关键词：

catastrophic oxidation; oxide scales; surface morphology;

D O I：

10.1023/A:1011546209235

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The isothermal and constant heating rate oxidation behaviour of the alloy Fe78Cr22 was examined in air with 1% H2O and in 7% H-2/93% Ar with 1% or 12% H2O. The measurements were performed in the temperature range 700-1300 degreesC. The effect of surface treatment prior to oxidation was examined. A Cr2O3 scale developed slowly up to 900 degreesC. At 1100 degreesC a catastrophic oxidation was observed after heat treatment for 70 h in air with 1% H2O and in 7% H-2/93% Ar with 12% H2O. The scale developed in these cases consisted of iron rich oxides such as Fe2O3 or FeCr2O4, in contrast to the more protective Cr2O3 scale seen under other test conditions. Possible causes for the catastrophic oxidation are discussed.

引用

页码：879 / 886

页数：8

共 12 条

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