OXIDATION AND CORROSION-RESISTANCE OF 2 FE-8CR-16NI-SI-CU ALLOYS

被引：7

作者：

BULLARD, SJ

LARSON, DE

DUNNING, JS

机构：

[1] U.S. Dept. of the Interior, Bur of Mines, Albany, OR

来源：

CORROSION | 1992年 / 48卷 / 11期

关键词：

CHROMIUM; CORROSION BEHAVIOR DIAGRAM; HIGH-TEMPERATURE OXIDATION; LOW CR; MINERAL ACIDS;

D O I：

10.5006/1.3315890

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Bureau of Mines has developed a low-chromium stainless steel with low-temperature corrosion resistance in acidic media and elevated temperature oxidation resistance in air. Two alloys, nominally containing Fe-8Cr-16Ni-5Si-1Cu and 0 or 1 Mo, were evaluated for their potential as low-Cr (8% Cr) substitutes for conventional (18% Cr) stainless steel. Corrosion resistance was electrochemically evaluated In 1 N H2SO4, 25% HNO3, 86% H3PO4, and 40% citric acid, and by mass-loss measurements in 1 N H2SO4, 25% HNO3, 86% H3PO4, glacial acetic and 40% citric acids, and distilled water. Static oxidation tests were performed at 700 and 800-degrees-C. Corrosion resistance for both alloys was equivalent to type 304 (UNS S30400) stainless steel in the 86% H3PO4, glacial acetic and 40% citric acids, and distilled water, poorer in 25% HNO3 and better in 1 N H2SO4. The oxidation resistance for both alloys was slightly poorer than type 304 SS at 700-degrees-C and slightly better at 800-degrees-C.

引用

页码：891 / 897

页数：7