陈颢,李惠琪

• 1:北京科技大学材料科学与工程学院
• 2:北京科技大学材料科学与工程学院 北京100083
• 3:北京100083
• 4:山东科技大学材料学院

摘要(Abstract)：

采用等离子束表面冶金技术,在Fe、C合金粉末中添加强碳化物形成元素W、Cr和少量的Al,在低碳钢基体上制备出原位析出的颗粒增强铁基复合涂层。利用光学显微镜、扫描电镜和X射线衍射仪对冶金层显微组织和硬质颗粒的分布进行了观察、分析。结果表明:冶金层组织为过饱和的-γFe、原位析出形状良好细小弥散的复合碳化物(Fe,Cr,W,Nb)7C3和少量的AlFe,冶金层与基体呈冶金结合。在固溶强化、弥散强化和细晶体强化共同作用下,冶金层显微硬度可达到830HV0.1。

关键词(KeyWords)： 等离子束表面冶金;颗粒增强;复合涂层;组织

Abstract:

Keywords:

基金项目(Foundation): 山东省自然科学基金(Y2002F12)

作者(Author): 陈颢,李惠琪

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