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J. Ocean Eng. Technol. 2003;17(2):40-46.    

Corrosion Resistance of Super Duplex Stainless Steel
수퍼 2상 스테인리스강의 부식 저항성에 관한 연구
강흥주,남기우,안석환,강창룡,도재윤,박인덕
부산해사고등학교,부경대학교 공과대학,부경대학교 공과대학,부경대학교 공과대학,부산기능대학,부산기능대학
© 2003 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Super Duplex Stainless Steel, Corrosion Resistance, Immersion Test, Impingement Test, SIS316L 316L, SIS304 304
핵심용어: 수퍼 2상 스테인리스강, 내식성, 침지시험, 유속시험, 스테인리스강, 스테인리스강
Abstract
The corrosion resistance of super duplex stainless steel on both its fibrous and dispersed phase was investigated. These structures consist of various volume fraction and distribution of austenite structure, which were obtained by changing the heat treatment temperature and cycle. The fibrous phase had higher austenite volume fraction than that of the dispersed phase at the same temperature. Corrosion resistance of super duplex stainless steel was evaluated through an immersion test and an impingement test, using 35% HCI and sea water, respectively. Super duplex stainless steel was compared with STS316L and STS304. The corrosion resistance of super duplex stainless steel was superior to ST316L and STS304. The dispersed phase of super duplex stainless steel was more stabilized than the fibrous phase in corrosion. The magnitude of corrosion rate was in order STS304, STS316L, fibrous phase of super duplex stainless steel and dispersed phase of super duplex stainless steel.


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