Oxidation-sulfidation behavior of multiphase Mo-Si-B alloys

被引：4

作者：

Tortorelli, PF ^{[1
]}

Schneibel, JH ^{[1
]}

More, KL ^{[1
]}

Pint, BA ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 6, PRT 1 AND 2, PROCEEDINGS | 2004年 / 461-464卷

关键词：

oxidation; sulfidation; molybdenum silicides;

D O I：

10.4028/www.scientific.net/MSF.461-464.1063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Alloys of Mo-Si-B with different compositions and phase morphologies were cyclically oxidized in dry air at 1200degreesC or isothermally exposed to an H-2-H2S-H2O-Ar environment at 800degreesC Effects of the multiphase nature (composition, morphology) of the Mo-Si-B system on corrosion product formation were evaluated. Preliminary analyses suggested that sulfide formation mimicked the starting alloy microstructure while reactions with oxygen as the sole oxidant reflected cooperative behavior among the different phases. Low corrosion rates under sulfidizing conditions were observed and moderate-to-good high-temperature oxidation resistance was found for certain cases.

引用

页码：1063 / 1070

页数：8

共 18 条

[1]

BERCZIK DM, 1997, Patent No. 5693156

[2]

BRADY MP, 1999, CORROSION ENV DEGRAD, pCH6

[3]

Devan J.H., 1989, OXIDATION HIGH TEMPE, P107

[4] OXIDATION/SULFIDATION OF IRON-ALUMINUM ALLOYS [J].