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J. Cent. South Univ. (2012) 19: 2081-2085 DOI: 10.1007/s11771-012-1248-2 Underwater friction stir welding of ultrafine grained 2017 aluminum alloy WANG Kuai-she(王快社), WU Jia-lei(武佳蕾), WANG Wen(王文... and Springer-Verlag Berlin Heidelberg 2012 Abstract: 2017 aluminum alloy plates with an ultrafine grained (UFG) structure were produced by equal channel angular processing (ECAP) and then were joined......
Effect of VC and NbC additions on microstructure and properties of ultrafine WC-10Co cemented carbides XIAO Dai-hong(肖代红)1, HE Yue-hui(贺跃辉)1, LUO Wei-hong(罗伟红)2, SONG Min(宋 旼)1 1. State Key... of ultrafine WC-10Co-NbC-VC cemented carbides are investigated and discussed. 2 Experimental Four kinds of alloys with the nominal compositions given in Table 1 were used. WC (99.5%), Co (99.9%), VC (99.5......
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功率对热等离子法制备纳米SiO的影响及其锂电池性能测试陈新亮1,万小涵1,马文会1,2,魏奎先1,李绍元11. 昆明理工大学真空冶金国家工程实验室2. 昆明理工大学复杂有色金属资源清洁利用国家重点实验室摘 要:利用热等离子发生器,分别在功率为13.2,14.3和15.4kW时制得了比表面积为84.16,126.26,172.02m~2/g的纳米SiO颗粒,与原始SiO颗粒比表面积1.95m~2/g相比,产物比表面积随等离子体功率升高而增大.TEM结果表明制备出的纳米SiO颗粒形貌为近球形,且随等离子体功率升高,得到的粒径越小分布越均匀.分别以3种功率制备纳米SiO为负极活性材料测试锂电池性能,首次放电容量分别为1 732,1 771,1 924mA·h/g,50次循环后其容量保持在......
功率对热等离子法制备纳米SiO的影响及其锂电池性能测试陈新亮1,万小涵1,马文会1,2,魏奎先1,李绍元11. 昆明理工大学真空冶金国家工程实验室2. 昆明理工大学复杂有色金属资源清洁利用国家重点实验室摘 要:利用热等离子发生器,分别在功率为13.2,14.3和15.4kW时制得了比表面积为84.16,126.26,172.02m~2/g的纳米SiO颗粒,与原始SiO颗粒比表面积1.95m~2/g相比,产物比表面积随等离子体功率升高而增大.TEM结果表明制备出的纳米SiO颗粒形貌为近球形,且随等离子体功率升高,得到的粒径越小分布越均匀.分别以3种功率制备纳米SiO为负极活性材料测试锂电池性能,首次放电容量分别为1 732,1 771,1 924mA·h/g,50次循环后其容量保持在......
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performance of ultrafine silver powder WEI Li-li1, XU Sheng-ming1, 2, XU Gang1, CHEN Song-zhe1, LI Lin-yan1 (1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China; 2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: The preparation of ultrafine silver powder was investigated by reducing Ag(NH3)2......
SiO的挥发及其对高炉冶炼的影响杨兆祥东北工学院鍊鉄教研室摘 要:本文利用热力学方法分析了SiO的挥发.在高炉内温度超过1600℃的强还原区SiO可能大最挥发.燃烧焦点处虽然温度很高,但氧化气氛很强,故SiO不可能在此大量挥发.高压有助于接受高风温.高炉内Si可从SiO2及挥发的SiO中直接还原,炉温愈高愈有利于从SiO中还原.关键词:......