田成海,李惠琪,迟静,许慧,陆峰,柴禄

• 1:山东科技大学材料科学与工程学院
• 2:北京科技大学材料系

摘要(Abstract)：

采用等离子表面熔覆技术,在Q235基体钢板上熔覆无硼以及含硼(其它粉末成分不变)的铁基合金涂层。利用光学显微镜(OM)、扫描电镜(SEM)、X射线衍射仪(XRD)、电子探针(EMPA)、显微硬度计对涂层的组织、相组成和显微硬度等进行分析。结果表明,含硼粉末熔覆涂层含有(Fe,Cr)7(C,B)3等硼化物相,含量比无硼粉末涂层的(Fe,Cr)7C3等碳化物相含量明显增多;并且产生了大量的共晶硼化物FeB以及少量的Fe2B,均匀弥散的分布在涂层中;在α-Fe中也有间隙固溶的硼;且随着粉末成分含硼量的增加,(Fe,Cr)7(C,B)3硼化物相含量增多,熔覆涂层的平均和最高显微硬度值也相应增加。

关键词(KeyWords)： 等离子熔覆;晶格畸变;硼化物;共晶组织

Abstract:

Keywords:

基金项目(Foundation): 山东省自然科学基金(2009ZRB01417)

作者(Author): 田成海,李惠琪,迟静,许慧,陆峰,柴禄

DOI: 10.13289/j.issn.1009-6264.2011.12.027

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