| 铁基粉末冶金制件烧结时纳米铜在界面的作用 |
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| 引用本文： | 张晓宇,吴迪,季长涛,李军,刘云旭.铁基粉末冶金制件烧结时纳米铜在界面的作用[J].材料科学与工艺,2009(4):474-477. |
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| 作者姓名： | 张晓宇 吴迪 季长涛 李军 刘云旭 |
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| 作者单位： | 东北大学轧制技术及连轧自动化国家重点实验室;长春工业大学先进结构材料省部共建教育部重点实验室; |
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| 基金项目： | 吉林省教育厅课题(吉教科合字[2008]第22号) |
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| 摘 要： | 为研究微量纳米铜添加到铁基粉末冶金件中烧结时对粒界扩散的作用.试验选择添加0.5%纳米铜的铁基粉末,通过高能球磨混合压制成样品,分别在不同温度相同保温时间及相同温度不同保温时间进行烧结,将上述试样冲击产生断口,通过SEM观察断口上纳米铜形貌变化.结果表明,纳米铜在铁基粉末冶金制品烧结过程中,保温时间相同随烧结温度升高和在相同烧结温度下随保温时间的延长在界面上发生快速吸附、溶解和扩散,使其团聚长大,在较低温度溶解于铁基粉末颗粒表面,明显降低烧结温度,由传统的工艺温度1180℃降低到920℃.
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| 关 键 词： | 纳米铜 铁基粉末 烧结 扩散 断口形貌 |
Effect of nano-copper on the interface in the process of sintering Fe-base powder metallurgy parts |
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| ZHANG Xiao-yu.,WU Di,JI Chang-tao,LI Jun,LIU Yun-xu.Effect of nano-copper on the interface in the process of sintering Fe-base powder metallurgy parts[J].Materials Science and Technology,2009(4):474-477. |
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| Authors: | ZHANG Xiao-yu WU Di JI Chang-tao LI Jun LIU Yun-xu |
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| Affiliation: | ZHANG Xiao-yu1.2,WU Di1,JI Chang-tao2,LI Jun2,LIU Yun-xu2(1.Stake Key Laboratory of Rolling Technology , Successive Rolling Automation Northeastern University,Shenyang 110004,China 2.Key Laboratory of Advanced Structrural Materials,Ministry of Education,Changchun University of Technology,Changchun 130012,China) |
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| Abstract: | The effect of nano-copper powder on grain boundary diffusion of Fe-base powder metallurgy parts was investigated.The tested samples with the addition of 0.5% nano-copper powder and Fe-base powder were mixed by high-energy ball milling and then were sintered at different temperatures and temperature keeping time.The change of nano-copper morphology of impact fracture surface was observed by scan electrical microscopy(SEM) .Results show that nano-copper particles exhibit rapid adsorption,diffusion and dissolu... |
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| Keywords: | nano-copper Fe-base powder sintering diffusion fracture surface |
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