张晓宇,吴迪,季长涛,吴化,王淮

• 1:东北大学轧制技术及连轧自动化国家重点实验室
• 2:长春工业大学先进结构材料省部共建教育部重点实验室

摘要(Abstract)：

为提高铁基粉末冶金制品的密度,试验采用高能球磨机在铁基粉末中添加少量不同含量的纳米铜粉体均匀混合,在相同压力750MPa下压制块状试样,在920℃,保护性气氛下进行烧结,烧结时间6h。对不同纳米铜含量烧结后的试样进行了密度、显微组织、硬度、TEM、XRD测试。结果表明:随纳米铜含量的提高,材料的密度明显提高。没有添加纳米铜试样烧结后的密度为6.6g/cm3;添加3%纳米铜的试样烧结后的密度为7.3g/cm3,显微组织中空隙率显著减少,同时提高了制品硬度。原因是纳米铜粉体在铁基颗粒界面上的作用,提高了材料的致密性。

关键词(KeyWords)： 粉末冶金;纳米铜;致密性;显微组织

Abstract:

Keywords:

基金项目(Foundation): 吉林省科技厅课题(第0530号)

作者(Author): 张晓宇,吴迪,季长涛,吴化,王淮

DOI: 10.13289/j.issn.1009-6264.2010.08.003

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