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离子束辅助沉积技术(IBAD)在冷作模具表面改性上的应用
IBAD application to surface modification of cold-working die steel
【摘要】 IBAD是离子注入及沉积技术发展起来的材料表面改性方面的综合技术,工模具经IBAD处理后现场使用寿命可提高2~4倍。材料经IBAD处理后改性层的硬度明显提高、摩擦系数减小、耐磨性增强;改性层是由(Ti2N+TiN)、(α-Fe+TiN)、(α-Fe(N)+Cr7C3)三层次组成,与基体间附着性好、晶粒细化呈纳米相。
【Abstract】 IBAD as a surface modification technique for several materials was developed on the basis of ion implantation and deposition.The service life of the Cr12MoV cold die steel treated by IBAD can be prolonged 2~4 times longer than untreated.As a result,the hardness of the modified layers of the IBAD-treated steel is obviously improved with low friction coefficient and high wearing resistance.The modified layers include(Ti2N +TiN),(а-Fe+TiN) and(а-Fe(N)+Cr7C3) ones from surface to inside,and all of them are bonded to the substrate strongly.And the surface layer presents nano-size grain refining.
【Key words】 IBAD(ion beam assisted deposition); Ion Implantation; deposition; surface modification; cold work die steel;
- 【文献出处】 真空 ,Vacuum , 编辑部邮箱 ,2010年04期
- 【分类号】TG174.44
- 【被引频次】2
- 【下载频次】222