Effect of Temperature and Chloride Ion Concentration on Corrosion of Passive Films on Nano/Ultrafine Grained Stainless Steels

被引：34
作者：
Lv Jinlong [1 ]
Luo Hongyun [1 ]
机构：
[1] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing 100191, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2014年 / 23卷 / 12期
关键词：
alloys; microstructure; semiconductors; x-ray diffraction; ELECTRONIC-STRUCTURE; PITTING CORROSION; BORATE BUFFER; OXIDE-FILMS; IMPEDANCE MEASUREMENTS; PRE-DEFORMATION; RESISTANCE; BEHAVIOR; 304-STAINLESS-STEEL; GROWTH;
D O I：
10.1007/s11665-014-1227-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of solution temperature, concentration of chloride ions, and grain refinement on the corrosion resistance of the passive film formed on 304 stainless steels in borate buffer solution were investigated by electrochemical impedance spectroscopy and Mott-Schottky measurements. The results showed that the passive films formed on the surface of 304 stainless steels possessed n- and p-type semiconductor characteristics. With the increase of solution temperature, the corrosion resistance of the passive film of coarse and nano/ultrafine grained stainless steels decreased. However, the corrosion resistance of the passive film in nano/ultrafine grained stainless steel was higher than that in the coarse grained one. Moreover, in cyclic potentiodynamic polarization tests, chloride ions changed semiconductor characteristics of the passive film formed on the surface of stainless steel.
引用
收藏
页码：4223 / 4229
页数：7
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