摘要
用失重法、动电位阳极极化、XRD、SEM及EPMA等多种实验方法研究了四种硅含量对不锈钢在高温浓硫酸中的腐蚀行为,结果表明:高硅的加入使不锈钢的耐酸性能显著提高。认为其主要原因是硅的加入促进了不锈钢的钝化,并使其表面形成外层以SiO2、内层以Cr2O3为主的钝化膜。
The influence of silicon contents on the corrosion behaviors of stainless steel in highly concentrated sulfuric acid was investigated by the methods of weight loss,potentiodynamic anodic polarization,X ray diffraction(XRD),SEM,EPMA and Auger electron spectroscopy(AES).The results indicated that adding high silicon content into stainless steel improved the corrosion resistance significantly in highly concentrated sulfuric acid because of the accelerated passivating process and the formation of SiO 2 in outer layer and Cr 2O 3 in inner layer.
出处
《上海金属》
CAS
1999年第5期27-33,共7页
Shanghai Metals
关键词
不锈钢
高硅含量
浓硫酸
耐蚀性
Stainless Steel,High Silicon Content,Resistance to Concentrated Sulfuric Acid Corrosion
