任学堂,董应虎,张瑞卿,储爱民,陈德志,张进,陈庆军,叶志国

• 1:南昌航空大学材料科学与工程学院
• 2:南昌航空大学经济管理学院
• 3:湖南科技大学机电工程学院
• 4:南昌航空大学环境与化学工程学院

摘要(Abstract)：

采用盐浴镀法在金刚石表面镀覆Cr层,通过调节镀覆温度(750℃~900℃)对镀层厚度实现可控制备。用模压法制备出不同Cr层厚度的金刚石预制坯,通过无压熔渗制备出Diamond-Cr/Cu复合材料。采用SEM、EDS、XRD、激光热导仪等检测和分析不同镀覆温度对Diamond-Cr/Cu复合材料的组织、界面结构、致密度及热导率的影响。研究结果表明:制备出的复合材料随盐浴镀覆温度的提升,界面处的裂纹、孔洞等缺陷不断减少,组织更加致密。复合材料的致密度由93.8%提升到96.0%,界面处EDS扫描显示Cr元素在近金刚石端界面处富集并生成Cr_3C_2及少量的Cr_7C_3。复合材料的热导率呈现先升高后下降的趋势,当镀覆温度为800℃时,复合材料热导率最高可达455 W/(m·K)。

关键词(KeyWords)： 金刚石/铜;盐浴镀;界面;热导率

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51264033,51261021,51402146);; 江西省自然科学基金(20151BAB206012,20132BA206019,20132BAB206010);; 湖南省自然科学基金(14JJ2093)

作者(Author): 任学堂,董应虎,张瑞卿,储爱民,陈德志,张进,陈庆军,叶志国

DOI: 10.13289/j.issn.1009-6264.2017.01.001

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