Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effect of Pre-Treatment Characteristics on the Gas Nitriding of Stainless Steels

스테인리스강의 가스질화에 미치는 전처리의 영향

  • Kim, H.G. (Divisin of Metallurgical Engineering, Pukyung national university) ;
  • Kim, Y.H. (Divisin of Metallurgical Engineering, Pukyung national university)
  • 김한군 (부경대학교 신소재공학부) ;
  • 김윤현 (부경대학교 신소재공학부)
  • Received : 2004.03.12
  • Accepted : 2004.09.03
  • Published : 2004.09.30
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Abstract

Effect of pre-treatment on the gas nitriding process of austenitic stainless steels has been investigated and the following results were obtained. Minimum pre-treatment time was decreased to 5min with increasing treatment temperature from $200^{\circ}C$ to $600^{\circ}C$. Surface activation effect by the pre-treatment was maintained in the air up to holding time of 64hr, judging from the analysis result of gas nitrided specimens. The Depth of nitrided layer of STS 304 and 316 stainless steels were ranged from $5{\mu}m$ to $90{\mu}m$ at $440^{\circ}C{\sim}600^{\circ}C$. The X-ray diffraction intensity for austenitic stainless steels were increases as nitriding temperature from $440^{\circ}C$ to $600^{\circ}C$.

Keywords

Acknowledgement

Supported by : 부경대학교

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