A comprehensive nitriding study by low energy ion beam implantation on stainless steel

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• 作者：Figueroa ; C.A. ; Wisnivesky ; D. ; Hammer ; P. ; Lacerda ; R.G. ; Droppa Jr ; R. ; Marques ; F.C. ; Alvarez ; F.
• 关键词：(Nitrogen) N²⁺ ion implantation ; Hardening ; Nano-indentation
• 刊名：Surface and Coatings Technology
• 出版年：2001
• 期刊代码：106_02578972
• 类别：ms
• 出版时间：September - October, 2001
• 卷：146-147
• 期：Complete
• 页码：405-409
• 文件大小：349 K

摘要

In this paper we report nitriding studies of stainless steel 316 using a broad ion beam source. Experiments performed by changing the ion energy (0.2–1.5 KeV), ion current density (1.4–5.7 mA/cm²) and implantation times (1 and 8 h) at a temperature around 380°C are reported. The microstructure and morphology are studied by glancing angle X-ray diffraction and scanning electron microscopy. For constant ion energy, higher nitrogen ion flux increases the hardness. At higher ion energies the sputtering process prevents the formation of a thick-nitrated layer, even for longer implantation times. The results are examined in the light of recent studies on physical models for ion implantation.