王红星,李迎光,储成林

• 1:南京航空航天大学机电学院
• 2:东南大学材料科学与工程学院

摘要(Abstract)：

采用浆料包渗法,以Cr2O3粉为渗Cr源,纯Al粉为还原剂,NH4Cl作为活化剂,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随后浆料包渗Cr、Al,制备Cr-Al共渗层。研究了稀土氧化物CeO2对Cr-Al渗层的组织和氧化性能影响。结果表明:渗剂中添加CeO2氧化物后,渗层组织由Cr、Al的固溶体为主转变为Ni3Al金属间化合物和固溶体两相混合;与不加稀土氧化物相比,改性后渗层氧化增重由纯铜的1/6降低到1/11,氧化产物为Cr2O3、Al2O3和少量的NiO,氧化层致密,没有明显的裂纹和空洞出现,改善了铜表面抗高温氧化性能。

关键词(KeyWords)： 铜金属;渗层;CeO2;抗氧化性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王红星,李迎光,储成林

DOI: 10.13289/j.issn.1009-6264.2010.06.011

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