화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.25, No.6, 293-299, June, 2015
DOI10.3740/MRSK.2015.25.6.293  Export Citation
질소 이온이 주입된 STS 316L 스테인리스 강에서의 상변화와 집합조직이 내식성에 미치는 영향
Influence of Phase Evolution and Texture on the Corrosion Resistance of Nitrogen Ion Implanted STS 316L Stainless Steel
전신희, 공영민†
  • 울산대학교 첨단소재공학부
Shinhee Jun, and Young-Min Kong†
  • School of Materials Science and Engineering, University of Ulsan, Ulsan 680-749, Korea
E-mail:
In this study, nitrogen ions were implanted into STS 316L austenitic stainless steel by plasma immersion ion implantation (PIII) to improve the corrosion resistance. The implantation of nitrogen ions was performed with bias voltages of .5, .10, .15, and .20 kV. The implantation time was 240 min and the implantation temperature was kept at room temperature. With nitrogen implantation, the corrosion resistance of 316 L improved in comparison with that of the bare steel. The effects of nitrogen ion implantation on the electrochemical corrosion behavior of the specimen were investigated by the potentiodynamic polarization test, which was conducted in a 0.5 M H2SO4 solution at 70 oC. The phase evolution and texture caused by the nitrogen ion implantation were analyzed by an X-ray diffractometer. It was demonstrated that the samples implanted at lower bias voltages, i.e., 5 kV and 10 kV, showed an expanded austenite phase, γN, and strong (111) texture morphology. Those samples exhibited a better corrosion resistance.
Keywords:plasma immersion ion implantation(PIII);STS 316L stainless steel;corrosion;residual stress;texture
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