IMPROVING THE PASSIVATING EFFICIENCY OF CONVERSION FILMS ON STAINLESS-STEEL BY THERMAL-TREATMENT

被引：5

作者：

CARMEZIM, MJ

CARVALHO, FG

FIGUEIREDO, MO

机构：

[1] INETI,ICEN,DEPT PHYS,P-2685 SACAVEM,PORTUGAL

[2] UNIV NOVA LISBOA,CTR CRISTALLOG & MINERAL,IICT,P-2825 MONTE DE CAPARICA,PORTUGAL

[3] UNIV NOVA LISBOA,DEPT MAT SCI,P-2825 MONTE DE CAPARICA,PORTUGAL

来源：

THIN SOLID FILMS | 1995年 / 258卷 / 1-2期

关键词：

COATINGS; CORROSION; DEPOSITION PROCESS; STEEL;

D O I：

10.1016/0040-6090(94)06379-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion-resistant chromium oxide films over stainless steel (Fe-27 Cr alloy) were obtained by chemical conversion and thermal treatment. It was found that as-converted films are amorphous and thermal treatment promotes crystallization. Films treated at 573 K and 973 K present a trigonal corundum-type structure. At 1073 K, a second crystalline phase of spinel-type is developed, its relative proportion increasing with treatment time and temperature. The passivating efficiency of the film is strongly dependent on the dominant phase structure. Coed passivation is obtained only with films having a cubic, spinel-type structure.

引用

页码：194 / 197

页数：4

共 9 条

[1] X-RAY PHOTOELECTRON SPECTROSCOPIC STUDY OF FILMS ON COLORED STAINLESS-STEEL AND COLORED NILOMAG ALLOY-771 [J].