王要利,于华,石红信,邱然峰,张柯柯

• 1:河南科技大学材料科学与工程学院
• 2:河南省先进有色金属材料加工技术重点实验室

摘要(Abstract)：

以WC合金作为电极,氩气为保护气体,采用电火花沉积技术在40Cr钢表面沉积WC合金层,通过显微硬度计、扫描电镜(SEM)及能谱分析(EDS),X射线衍射等测量方法,研究了40Cr钢表面电火花沉积WC层的显微硬度、表面状态、界面行为及相结构组成。结果表明,WC合金电火花沉积层存在微裂纹及气孔,主要由W、Fe6W6C、Fe3C和Cr23C6等相组成;沉积层显微硬度达820 HV,为基体的4.5倍;沉积层断面连续、致密,厚度为30μm;沉积层与基体之间发生了元素的相互扩散与合金化过程,呈冶金结合,无明显界面。

关键词(KeyWords)： 电火花沉积;WC沉积层;界面行为;机理

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50774029);; 河南省高校创新人才基金(教高2004-294);; 河南省杰出青年科学基金(074100510011)

作者(Author): 王要利,于华,石红信,邱然峰,张柯柯

DOI: 10.13289/j.issn.1009-6264.2013.08.024

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