王红星,柳秉毅,杨少锋,张炎

• 1:南京工程学院材料工程学院

摘要(Abstract)：

采用料浆包渗法,以SiO2粉为Si源,纯Al粉为还原剂,NaF和NH4Cl作为复合活化剂,Al2O3为惰性添加剂,蛋白质(鸡蛋清)为粘结剂,在Cu表面预先镀Ni层随后900℃、12 h表面渗Si,制备渗Si层。分别研究了CeO2和Al粉含量对渗Si层组织和摩擦性能的影响。结果表明:当铝粉含量20%时,CeO2含量由3%增加到6%,渗层组织为Ni2Si+NiSi相;当CeO2含量6%时,铝粉含量由20%增加到30%,渗层组织变化过程:Ni2Si+NiSi→NiAl→Ni2Al3相,包渗过程由渗硅向渗铝转变;两种渗层的最小摩擦系数都约为纯铜的1/5。

关键词(KeyWords)： Cu基体;Ni-Si金属间化合物;Ni-Al金属间化合物;摩擦系数

Abstract:

Keywords:

基金项目(Foundation): 南京工程学院博士启动基金项目(YKJ201203)

作者(Author): 王红星,柳秉毅,杨少锋,张炎

DOI: 10.13289/j.issn.1009-6264.2013.05.032

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