龙涛,董应虎,张瑞卿,甘海潮

• 1:江西省金属材料微结构调控重点实验室(南昌航空大学)
• 2:南昌航空大学材料科学与工程学院
• 3:南昌航空大学经济与管理学院

摘要(Abstract)：

通过对金刚石表面盐浴镀Cr,采用扫描电子显微镜(SEM)、能谱仪(EDS)及X射线衍射仪(XRD)观察并分析镀层的形貌、生长、结构及结合力,并研究了镀层厚度的可控及形成机制。结果表明,镀层的形成先由Cr与金刚石表面的C原子反应生成碳化物,反应充分后碳化物层主要为Cr7C3相;镀层反应扩散充分后表面吸附多余的Cr形成一层纯Cr相层。最佳盐浴镀覆工艺在750~850℃保温60 min,通过改变镀覆温度或保温时间可得到可控厚度的镀层,其厚度为0.75~3μm。另外,当镀层厚度超过3μm在冷却过程中会直接开裂开脱。在形成包覆较好的镀层下,镀层厚度越薄与基体的结合能力就越强。

关键词(KeyWords)： 盐浴;镀层;结合力;化学结合

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51264033);; 江西省自然科学基金(20132BA206019);; 江西省金属材料微结构调控重点实验室开放基金(JW201123003)

作者(Author): 龙涛,董应虎,张瑞卿,甘海潮

DOI: 10.13289/j.issn.1009-6264.2015.01.026

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