대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제48권3호
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  • Pages.225-234
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  • 2010
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
권호 표지
DOI QR코드

DOI QR Code

의(擬)전기분해식 염욕질화처리를 통한 Cr-Mo-V강의 내마모와 표면성질에 관한 연구

The Surface Properties and Wear Resistance of Cr-Mo-V Steel by Salt bath Process after Pseudo-electrolysis

  • 정길봉 (국방기술품질원 부산센터2팀) ;
  • 윤재홍 (창원대학교 금속재료공학과) ;
  • 허성강 (창원대학교 금속재료공학과)
  • Jung, Gil Bong (Defense Agency for Technology and Quality, Busan Center 2nd Team) ;
  • Yoon, Jae Hong (Dept. of Material Science and Engineering, Changwon National University) ;
  • Hur, Sung Kang (Dept. of Material Science and Engineering, Changwon National University)
  • 투고 : 2009.09.21
  • 발행 : 2010.03.20
⟨ 이전 논문 다음 논문 ⟩

초록

Salt bath nitriding, which has been developed recently by domestic company, is an emerging ecofriendly surface treatment. The salt bath nitriding is accompanied by the electrolysis process in the pretreatment step, and this whole processis called Pseudo-Electrolysised Salt bath Nitriding (PESN). The PESN creates only $NH_3$ and non-toxic salts without harmful $CN^{-}$ or toxic gas such as that found in previous salt bath nitriding. In general, ion nitriding and gas nitriding create high hardness and a strong brittle white layer on the surface. However, the PESN shows a thin white and gray layer. The PESN was applied to the defense material, 3%Cr-Mo-V steel, to study the surface characteristics at $480^{\circ}C$, $530^{\circ}C$, and $580^{\circ}C$ for 4 hrs, 20 hrs, 40 hrs, and 60 hrs of nitriding time condition. As a result, the best nitriding layer was found at $530^{\circ}C$ for 40 hrs. If we improve corrosion resistance and nitriding layer depth, the PESN will be able to be applied to the defense industry parts.

키워드

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