Corrosion behavior and passive film chemistry of 216L stainless steel in sulphuric acid

被引：63

作者：

Rao, V. Shankar ^{[1
]}

Singhal, L. K. ^{[1
]}

机构：

[1] Jindal Stainless Ltd, Hisar 125005, India

来源：

JOURNAL OF MATERIALS SCIENCE | 2009年 / 44卷 / 09期

关键词：

ANODIC-DISSOLUTION; XPS; COMPONENTS; ALLOYS; ESCA; MN;

D O I：

10.1007/s10853-008-2976-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion behavior and chemical structure of the passive film of a newly developed 200 series austenitic stainless steel (216L) were studied in sulfuric acid (H(2)SO(4)) and compared with 316L. From potentiodynamic polarization studies it was found that the corrosion behavior of 216L closely follows that of 316L. The breakdown of passivity was evaluated by addition of sodium chloride (NaCl). The immersion tests revealed that the corrosion rate of 216L in various concentrations of H(2)SO(4) at ambient temperature is equivalent to 316L. X-ray photoelectron spectroscopy (XPS) analysis of the passive film formed on 216L revealed enrichment of Cr ions on the surface while Mo and N compounds were also present. Ni and Mn ions were conspicuous by their absence in the passive film.

引用

页码：2327 / 2333

页数：7

共 27 条

[1] The evaluation of the repassivation tendency of Cr-Mn and Cr-Ni steels using scratch technique [J].