期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 133, 期 2-3, 页码 668-673出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2012.01.049
关键词
Alloys; Shape memory effect; Corrosion; Surface properties; XPS
资金
- PPGCEM/UFSCar (Federal University of Sao Carlos)
- Brazilian research funding agency CNPq (National Council for Scientific and Technological Development)
The corrosion properties of three Fe-Mn-Si-Cr-Ni-(Co) shape memory stainless steels were studied based on X-ray photoelectron spectroscopy (XPS) analyses, immersion and polarization tests. The test results were compared with those of a type 304 austenitic stainless steel. The XPS analyses indicated substantial Si content in the anodic passive films formed on shape memory stainless steels in sulfuric acid solution and that the high protectiveness of these films results from a protective film consisting of a (iron. chromium)-mixed silicate. The corrosion rate of the shape memory stainless steels in boiling nitric acid solution was lower than that of austenitic stainless steel. The high silicon content was found to play an important role in the corrosion behavior of these shape memory alloys in highly oxidizing environments. Due to their high manganese content, the shape memory stainless steels showed poor corrosion behavior in 3.5% sodium chloride solution when compared with austenitic stainless steel. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据