沉淀包裹法制备Cu/α-Al2O3纳米复合粉体
Preparation of Cu Coated α-Al2O3 Nanocomposite Powders by Liquid Precipitation Method
摘 要
以纳米Al2O3、CuSO4·5H2O和纳米铝粉为原料,采用非匀相沉淀工艺获得了纳米铜包裹α-Al2O3复合粉体;研究了反应温度和pH值对复合粉体成分及性能的影响;利用XRD、XPS、TG/DSC、Zeta电位和TEM等方法对复合粉体的成分、热学特性以及形貌特征进行了表征.结果表明:采用反应温度为40 ℃、保温4 h的工艺条件,可以获得纳米铜颗粒包裹Al2O3纳米复合粉体,铜颗粒呈球形,尺寸为10 nm左右.
纳米
Al2O3
复合粉体
precipitation coating method
nanometre
Al2O3
composite powder
Abstract
Cu coated α-Al2O3 nanocomposite powders were synthesized by heterogeneous precipitation coating process,with Al2O3,CuSO4·5H2O and nanometer aluminum powders as raw materials.The temperature and pH value of the reaction system were investigated.XRD,XPS,TG/DSC,Zeta potential and TEM were used to analyze the composition,thermo chemistry and microstructure of the composite powders.The results showed that nanometer Cu coated α-Al2O3 composite powders could be obtained if the precipitation reaction temperature was 40 ℃ and time was 4 h.The coating Cu particles had a size about 10 nm with a spherical shape.
中图分类号 TG146.2
所属栏目
基金项目 河南省自然科学基金资助项目(02110103001);河南省科技厅科技攻关计划资助项目(0624250013)
收稿日期 2005/7/3
修改稿日期 2005/10/18
网络出版日期
作者单位点击查看
备注卢红霞(1969-),女,河南新乡人,副教授,博士.
引用该论文: LU Hong-xia,HU Xing,ZHANG Rui,XU Hong-liang,WANG Hai-long. Preparation of Cu Coated α-Al2O3 Nanocomposite Powders by Liquid Precipitation Method[J]. Materials for mechancial engineering, 2006, 30(8): 69～72
卢红霞,胡行,张锐,许红亮,王海龙. 沉淀包裹法制备Cu/α-Al2O3纳米复合粉体[J]. 机械工程材料, 2006, 30(8): 69～72
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【6】Lu L,Sui M L,Lu K.Superplastic extensibility of nanocrystalline copper at room temperature[J].Science,2000,287:1463-1466.
【7】Sekino T,Niihara K.Fabrication and mechanical properties of fine tungsten-dispersed alumina-based composites[J].J Mater Sci,1997,32:3943-3979.
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【10】卢红霞,陈昌平,杨会智,等.铜包裹氧化铝粉体增强铝基材料的研究[J].机械工程材料,2005,29(9):28-30.
【11】李素芹,于秉杰,李士琦,等.熔体过滤法钢液脱铜技术探索[J].化工冶金,2003,21(3):314-317.
【12】李旗,潘海斌,祝传刚,等.Y-123相超导体Cu位掺Sn的XPS研究[J].低温物理学报,1998,20(1):28-33.
【13】常建军,黄世华,彭洪尚,等.稀土纳米发光材料的燃烧法制备及光谱性质[J].光谱学与光谱分析,2006,26(2):231-234.
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