Effect of Heat Treatment on Corrosion Performance of Duplex Steel COR 25
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG1989年第3期
论文作者：李冬贵 J.P.Simpson R.Schenk
文章页码：199 - 202
摘 要：<正> The effect of heat treatment on the corrosionperformance of austenitic-ferritic duplex stain-less steel COR 25 in aqueous solution containing60%H3PO4+4%H2SO4+1500 ppm Cl- at 95℃ was in-vestigated.When the solution temperature wasincreased from 950℃ to 1230℃,the corrosionresistance increased by two orders of magnitude,as shown by electrochemical measurements,im-mersion tests and direct observation under thescanning electron microscope.The specimensheat treated at solution temperatures of 950℃and 1030℃ were severely corroded along thephase boundaries;specimens treated at 113C℃and 1230℃ tended to selective corrosion causedby the dissimilar chromium contents of the aus-tenite and ferrite phases after heat treatment.
李冬贵，J.P.Simpson，R.Schenk
摘 要：<正> The effect of heat treatment on the corrosionperformance of austenitic-ferritic duplex stain-less steel COR 25 in aqueous solution containing60%H3PO4+4%H2SO4+1500 ppm Cl- at 95℃ was in-vestigated.When the solution temperature wasincreased from 950℃ to 1230℃,the corrosionresistance increased by two orders of magnitude,as shown by electrochemical measurements,im-mersion tests and direct observation under thescanning electron microscope.The specimensheat treated at solution temperatures of 950℃and 1030℃ were severely corroded along thephase boundaries;specimens treated at 113C℃and 1230℃ tended to selective corrosion causedby the dissimilar chromium contents of the aus-tenite and ferrite phases after heat treatment.
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