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MICROSTRUCTURES OF NICKEL-CHROMIZING LAYER ON STEELS BY GLOW-DISCHARGE ION ALLOYING |
HE Qi; BIAN Jie; ZHEN Weineng;PAN Junde; FAN Benhui (Taiyuan University of Technology;Taiyuan 030024)(Manuscript received 1996-01-26; in revised form 1996-04-06) |
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Cite this article:
HE Qi; BIAN Jie; ZHEN Weineng;PAN Junde; FAN Benhui (Taiyuan University of Technology;Taiyuan 030024)(Manuscript received 1996-01-26; in revised form 1996-04-06). MICROSTRUCTURES OF NICKEL-CHROMIZING LAYER ON STEELS BY GLOW-DISCHARGE ION ALLOYING. Acta Metall Sin, 1997, 33(4): 406-412.
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Abstract Nickel-Chromizing was conducted for carbon steel samples (mass fraction:0.1%, 0.45%, 0.8%) using the technique of glow-discharge ion surface alloying with arc sources. By using X-ray diffraction, SEM and TEM, the phase structure and the distribution of alloying elements (Cr, Ni, C) in the alloying layer were studied. The results indicated that the surface concentration of nickel and chromium is 50%-60% and 10%-15% respectivaly;the concentration of alloying elements in alloying layer decressed gradually from surface to inner; the distribution of carbon in alloying layer of samples with different carbon-contents is different; the alloying layer isγ-(Fe,Ni) for steel 10, and there were Cr23C6 and Cr7C3 in γmatrix alloying layer of steel 45, T8 sample.
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Received: 18 April 1997
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