Evaluation on Resistance to Pitting Corrosion of Fe-Cr Alloys via Measurement of the Critical Pitting Temperature (CPT) and Potentiodynamic Polarization According to KS D 0238 (wet, dry), ASTM G 61 and ISO 17475 Standards

被引：0

作者：

Kang, Su-Yeon ^{[1
]}

Lee, Jae-Bong ^{[1
]}

Kim, Yeong-Ho ^{[2
]}

机构：

[1] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea

[2] POSCO, Stainless Steel Res Grp, Pohang 790785, South Korea

来源：

JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS | 2009年 / 47卷 / 10期

关键词：

Fe-Cr alloys; potentiodynamic polarization; pitting potential; critical pitting temperature; STAINLESS-STEELS; SURFACE-ROUGHNESS;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The resistance to pitting corrosion of Fe-Cr alloys was evaluated by performing potentiodynamic polarization and critical pitting temperature (CPT) tests. For the potentiodynamic polarization tests, various standards were applied, i.e., KS D 0238 (wet, dry), ASTM G 61, and ISO 17475, showing different potentiodynamic polarization results including pitting potentials. ASTM G 61 and ISO 17475 standards presented relatively higher pitting potential while KS D 0238 (dry) indicated lower values than the others. Effects of surface roughness, scan rates, and exposure time to air before tests were also investigated. CPT tests were performed under two different applied potentials, 300 MVSCE and 200 MVSCE in deaerated 1M NaCl aqueous solution. CPT values and the polarization test results showed a linear relationship.

引用

页码：635 / 643

页数：9