Effect of heat treatment on properties of cold sprayed nanocrystalline copper alumina coatings

被引：0

作者：

International Advanced Research Centre for Powder Metallurgy and New Materials , Balapur PO, Hyderabad, Andhra Pradesh 500 005, India ^{[1
]}

机构：

[1] International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Andhra Pradesh 500 005, Balapur PO, Hyderabad

来源：

Acta Mater | 2007年 / 14卷 / 4741-4751期

关键词：

Coating; Cold spray; Electrical resistivity; Hardness; Nanocrystalline materials;

D O I：

10.1016/j.actamat.2007.04.044

中图分类号：

学科分类号：

摘要：

Cold gas dynamic spraying appears to be the most appropriate thermal spraying technique for depositing nanocrystalline powders given its low deposition temperature. Nanocrystalline copper alumina coatings were deposited on copper substrates and the effect of heat treatment temperature on porosity, grain size, microhardness and conductivity of the coatings was studied and compared with that of cold sprayed copper. The role of alumina in inhibiting grain growth and in strengthening the copper matrix was investigated. An attempt has been made to assess the contribution of various mechanisms to the conductivity of nanocrystalline copper alumina coatings. © 2007 Acta Materialia Inc.

引用

页码：4741 / 4751

页数：10

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