کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1691403 | 1011314 | 2008 | 4 صفحه PDF | دانلود رایگان |
The nitriding performance of low power electron beam excited plasma is investigated by characterizing the surface of nitrided low alloy Cr–Mo steels. In this research, a particular attention was given to the effect of the acceleration voltage and processing time on the composition and hardness of the processed samples. In an attempt to maximize the dissociation of N2, the acceleration voltages applied in our experiments were set within a range that corresponds to the maximum dissociation cross-section of N2. The results show that the peak intensity of the alpha Fe observed for the unprocessed sample decreases as the acceleration voltage increases. Moreover, the peak intensities depicting the formation of the nitride compound layers, Fe4N and Fe3N phases, increases with the acceleration voltage of the electron beam. Consequently, the surface hardness of the treated low alloy steel was increased by more than two times that of the unprocessed specimen.
Journal: Vacuum - Volume 83, Issue 3, 15 October 2008, Pages 497–500