ON THE CORROSION CHARACTERIZATION OF TITANIUM NITRIDE IN SULFURIC-ACID-SOLUTION

被引:16
作者
CHYOU, SD [1 ]
SHIH, HC [1 ]
CHEN, TT [1 ]
机构
[1] NATL TSING HUA UNIV,DEPT MAT SCI & ENGN,HSINCHU 300,TAIWAN
关键词
D O I
10.1016/0010-938X(93)90165-D
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The sulfuric acid corrosion behavior of TiN-coating on stainless steel, prepared by plasma enhanced physical vapor deposition (PVD), was studied by using a perforation test, dynamic and static polarizations and open-circuit potential (OCP) measurements. It was found that the corrosion of TiN strongly depended on the concentration of H2SO4. For the range of 0.1-10 N H2SO4, the corrosion rate increased, while for 10-36 N acid, it decreased with the acid concentration. It was also noted that the corrosion rates of 20-36 N acid were much lower than those of 0.1-20 N solution. For 0.1-20 N sulfuric acid, X-ray photoelectron spectra (XPS) accompanied by thermodynamic considerations allowed determination of the chemical states of the corrosion products and the related chemical reactions. For 20-36 N sulfuric acid, a passivation model has been proposed.
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页码:337 / 347
页数:11
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