PITTING BEHAVIOR OF DUPLEX-308L STAINLESS-STEEL IN METHANOL WATER HCL SOLUTIONS

被引：18

作者：

HRONSKY, P ^{[1
]}

DUQUETTE, DJ ^{[1
]}

机构：

[1] RENSSELAER POLYTECH INST,DEPT MAT SCI,TROY,NY 12181

来源：

CORROSION | 1982年 / 38卷 / 02期

关键词：

D O I：

10.5006/1.3577327

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Passivity breakdown experiments have been performed on a duplex stainless steel in 0. 5N HCI, H//2O/methanol solutions as a function of delta -ferrite content and water/methanol ratios. The pitting resistance in strongly passivating (aqueous) solutions is primarily a function of the composition of delta / gamma interface, relatively independent of the interfacial area or of the ferrite content higher than 1 Vol%. The integrity of the passive film is thought to be associated with segregation of sulfur to the delta / gamma interface. Pits initiate in duplex alloy at the delta /65 phase boundaries, in the single phase alloy at sulfide inclusions.

引用

页码：63 / 68

页数：6

共 37 条

[1]

Andersson B. R. T., 1975, SCAND J METALL, V4, P85

[2]

BOHNI H, INTERNAL REPORTS ETH

[3]

BRAUNS E, 1961, WERKST KORROS, V12, P73

[4]

BUEHLER HE, 1964, WERKST KORROSION, V15, P909