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| 超细W-10Cu复合粉末的湿法制备及烧结体性能 | |
| 引用本文： | 许龙山,于洋,林丽璀,曾雄,邹菲菲.超细W-10Cu复合粉末的湿法制备及烧结体性能[J].厦门理工学院学报,2012,20(3):42-46. |
| 作者姓名： | 许龙山 于洋 林丽璀 曾雄 邹菲菲 |
| 作者单位： | 1. 厦门理工学院材料科学与工程系,福建厦门,361024 2. 厦门虹鹭钨钼工业有限公司,福建厦门,361021 3. 厦门大学材料学院,福建厦门,361005 4. 厦门理工学院机械工程系,福建厦门,361024 |
| 基金项目： | 国家自然科学基金项目(51101131);福建省自然科学基金项目(2010J05124);福建省教育厅科技项目(JA10255) |
| 摘 要： | 通过湿法以仲钨酸铵和硝酸铜为原料制备了Cu的质量分数为10%、平均粒径约为250 nm的超细W-Cu复合粉末.用扫描电子显微镜(SEM)和元素分析,结果表明:还原温度对粉末的形态和纯度具有显著作用.粉末经注射成型后制成的生坯在1300℃下、H2气氛中烧结120 min后,其相对密度可达99.37%,微观组织均匀,具有较高的热导率,可达217 W/(m·K)左右,室温到600℃范围下热膨胀系数在6.0×10-6～7.8×10-6K-1之间. |
| 关 键 词： | 钨铜 超细W-10Cu复合粉末 烧结性能 湿法制备 |
Fabrication and Properties of Ultrafine W-10Cu Powders and Composite |
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| XU Long-shan,YU Yang,LIN Li-cui,ZENG Xiong,ZOU Fei-fei.Fabrication and Properties of Ultrafine W-10Cu Powders and Composite[J].Journal of Xiamen University of Technology,2012,20(3):42-46. | |
| Authors: | XU Long-shan YU Yang LIN Li-cui ZENG Xiong ZOU Fei-fei |
| Institution: | 1.Faculty of Materials Science and Engineering,Xiamen University of Technology,Xiamen 361024,China;(2.Xiamen Hong Lu Tungsten Molybdenum Industry,Xiamen 361021,China; 3.College of Materials,Xiamen University,Xiamen 361005,China; 4.Faculty of Mechanical Engineering,Xiamen University of Technology,Xiamen 361024,China) |
| Abstract: | W-10Cu(by weight) ultrafine powder with particle size of about 250 nm has been synthesized by chemical method,calcination and subsequent hydrogen reduction process with reaction of ammonium paratungstate and copper salt.Scanning electron microscopy(SEM) and elemental analysis results showed that the reduced temperature has a significant effect on powder morphology and purity when sintered at 1300℃ for 120 min in H2 atmosphere,W-10Cu composite derived from injection molding can reach a relative density of 99.37%,and the microstructure are homogeneous.Furthermore,the sintered W-10Cu composite exhibited excellent thermal conductivity of about 217W/(m· K),and the coefficient of thermal expansion is between 6.0×10-6～7.8×10-6K-1 in the temperature range of 25℃ to 600 ℃. |
| Keywords: | tungsten-copper ultrafine W-10Cu composite powder sintering character wet chemical method |
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