张剑平,左红艳,罗军明,刘长虹

• 1:南昌航空大学材料科学与工程学院
• 2:南昌航空大学航空制造工程学院

摘要(Abstract)：

研究了球形铜粉烧结颈形成和晶粒长大过程中的物质迁移机制,分析微波混合加热条件下铜粉及其压坯的烧结动力学。结果表明:在微波混合加热条件下,铜粉烧结颈的形成和晶粒长大方式均以体扩散为主;烧结颈形成阶段的扩散激活能为256 k J/mol,与纯微波烧结和传统加热方式一致;晶粒长大阶段的扩散激活能为89.8 k J/mol,介于单模腔和多模腔纯微波烧结的中间,而远低于常规烧结时的扩散激活能。

关键词(KeyWords)： 微波烧结;扩散机制;扩散激活能;动力学

Abstract:

Keywords:

基金项目(Foundation): 航空科学基金(2016ZF56020);; 江西省教育厅科技项目(GJJ170592)

作者(Author): 张剑平,左红艳,罗军明,刘长虹

DOI: 10.13289/j.issn.1009-6264.2018-0018

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