Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Nitrogen Gas Ratio on Nitride Layer and Microhardness of Tool Steel(SKH51) in Plasma Nitriding

플라즈마질화시 방전가스중 질소가스의 비율이 공구강(SKH51)의 질화층 및 미소경도에 미치는 영향

  • 김덕재 (고등기술연구원 재료공정연구실) ;
  • 이해룡 (고등기술연구원 재료공정연구실) ;
  • 곽종구 (한국원자력연구소) ;
  • 정우창 (부산대학교 금속공학과) ;
  • 조영래 (부산대학교 금속공학과)
  • Published : 2002.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Pulsed DC-plasma nitriding has been applied to form nitride layer having only a diffusion layer. The discharge current with the variation of discharge gases is proportional to the intensity of $N_2^+$ peak in optical emission spectroscopy during the plasma nitriding. The discharge current, microhardness in surface of substrate and depth of nitride layer increased with the ratio of $N_2\;to\;H_2$ gas in discharge gases. When the ratio of $N_2\;to\;H_2$ is lower than 60% in the discharge gases, high microhardness value of 1100Hv nitride layer which contains no compound layer has been formed.

Keywords

References

  1. M. Zlatanovic and W.D. Muenz, Surf. Coat. Technol., 41, 17 (1990) https://doi.org/10.1016/0257-8972(90)90127-X
  2. T. Spalvins, J. Vac. Sci. Technol., A3, 2329 (1985) https://doi.org/10.1116/1.572876
  3. S.R. Brasbury, D.B. Lewis, P.M. Archer and W. Ahmed, Surf. Coat. Technol., 91, 192 (1997) https://doi.org/10.1016/S0257-8972(96)03183-0
  4. M.Sarwar, Surf. Coat. Technol., 108-109. 612 (1990) https://doi.org/10.1016/S0257-8972(98)00594-5
  5. M. Zlatanovic, Surf. Coat. Technol., 48, 19 (1991) https://doi.org/10.1016/0257-8972(91)90124-F
  6. B.J. Kim, Y.C. Kim and J.J. Lee, Surf. Coat. Technol., 114, 85 (1999) https://doi.org/10.1016/S0257-8972(99)00026-2
  7. A.D. Wilson, A. Leyland and A. Matthews, Surf. Coat. Technol., 114, 70 (1999) https://doi.org/10.1016/S0257-8972(99)00024-9
  8. B.S. Yilbas and S.M. Nizam, J. Mater. Process. Technol., 105,352 (2000) https://doi.org/10.1016/S0924-0136(00)00554-9
  9. D.J. Kim, Y.R. Cho, M.J Lee, J.M Hong, Y.K Kim, K.H Lee, Surf. Coat. Technol., 116-119, 906 (1999) https://doi.org/10.1016/S0257-8972(99)00149-8
  10. Y. Sun and T. Bell, Materials Science and Engineering, A224, 33 (1997) https://doi.org/10.1016/S0921-5093(96)10561-X
  11. P. Buchhagen and T. Bell, Computational Materials Science, 7, 228 (1996) https://doi.org/10.1016/S0927-0256(96)00085-7
  12. E.J. Miola, S.D. Souza, M.O. Dionysio, D. Spinellli and C. A. Santos, Surf. Coat. Technol., 116-119, 347 (1999) https://doi.org/10.1016/S0257-8972(99)00207-8
  13. F. Debal, J. Bretagne, A, Ricard, M. Jumel, M. Wautelet, J.P. Dauchot and M. Hecq, Surf. Coat. Technol., 98,1387 (1998) https://doi.org/10.1016/S0257-8972(97)00258-2
  14. T.B. Massalski, Binary Alloy Phase Diagrams, 3, 1729 (1990)
  15. S. Peter, F. Richter, R. Tabersky and U. Koenig, Thin Solid Films, 377-378, 430 (2000) https://doi.org/10.1016/S0040-6090(00)01270-0
  16. U.J. Lee, 'Handbook of Metallic materials,' Gold, 242 (1997)
  17. H.Y. Yang, S.Y. Kim, 'Metallic materials,' Moon-Woon -Dang, 273 (1991)
  18. G.H. Bae, 'Plasma/Ion Nitriding,' Sam-Mi-Sa, 20 (1996)
  19. Editorial board in Sewha, 'Surface treatment of metals,' Se-Wha, 1125 (1990)
  20. B. Edenhoffer, J.G. Conybear and G.T. Legge, 'Heat Treatment of Metals,' 1, 6 (1991)