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Effect of porosity on hydrogenation kinetics of Mg-3Ni-2MnO2 nanocomposite powder reaction bed ZHANG Wen-cong(张文丛), SHI Fei(史 菲) School of Materials Science and Engineering, Harbin Institute... powder reaction bed depends strongly on the effect of heat transfer, mass transfer and intrinsic reaction together. The reaction bed with the porosity of 0.53 exhibits the largest hydrogenation rate......
by experiment: (a) Tungsten powder A with big particle; (b) Tungsten powder B with small particle 1.2 工艺 根据前期的研究结果[15],实验制备的三层W-Cu梯度热沉材料的封接层,中间层,散热层的成分分别设计为:W/Cu20(表示混合层中Cu的含量为20%(质量分数.... Factors affecting the thermal conductivity of W-Cu composites[J]. Adv Powder Metall Part Mater, 1993, 4: 201?213. [3] 任淑彬, 叶 斌, 曲选辉, 何新波. 复杂形状SiCP/Al复合材料零件的制备与性能[J]. 中国有色金属学报, 2005, 15(11): 1722?1726......
SEM像及EDS分析 Fig. 2 SEM image(a) and EDS analysis((b), (c)) of W-Cu composite powder 表1 热挤压与溶渗工艺制备的W-30Cu触头材料的性能 Table 1 Properties of W-30Cu electrical contact material by hot... Jia-min. Mechanism of ultrafine/nano W-20Cu composite powder during liquid sintering[J]. The Chinese Journal of Nonferrous Metals, 2011, 21(7): 1587-1593. [9] 朱 松, 范景莲, 刘 涛, 田家敏. 细晶W-Cu材料的导电性能[J]. 中国有......
): 30-34.JIANG Guo-sheng, WANG Zhi-fa, LIU Zheng-chun. Present status of the study on high-tungsten W-Cu composites[J]. Materials Science and Engineering of Powder Metallurgy, 1999, 4(1): 30-34. [3] 周武平. WCu复合材料在电...(11): 1806-1809. [9] 陈文革. W-Cu触头材料电寿命的研究[J]. 粉末冶金技术, 2003, 21(4): 225-226.CHEN Wen-ge. A study on electric-lifetime of W-Cu contacts materials[J]. Powder Metallurgy Technology, 2003, 21(4): 225-226......
Oxidation resistance of co-deposited Ni-SiC nanocomposite coating ZHOU Yue-bo(周月波), DING Yuan-zhu(丁元柱) Department of Materials Science and Engineering, Heilongjiang Institute of Science...) nanocomposite coating was prepared from a nickel sulfate bath by co-electrodeposition of Ni and SiC nanoparticles in an average size of 30 nm. The oxidation at 1 000 ℃ shows that the Ni-6.0%SiC......
W-Cu功能梯度材料的研究现状齐艳飞,李运刚,田薇,蔡宗英,周景一河北联合大学冶金与能源学院摘 要:W-Cu功能梯度材料是一种新型非均质复合材料.介绍了W-Cu功能梯度材料的基本特征及用途,综述了W-Cu功能梯度材料的制备方法,并介绍了电沉积法在制备功能梯度材料中的应用情况,分析了其制备W-Cu功能梯度材料的可行性,最后提出了今后W-Cu功能梯度材料需要解决的问题.关键词:W-Cu功能梯度材料;特性;用途;制备方法;......
-Cu and W-Cu. These kinds of alloys have many common properties, such as high density, small thermo-expansion coefficient, anti-cautery, anti-oxidation and the fine conductivity of electric and heat..., the feedstock consists of 53% (volume fraction) W-Ni-Fe powder with a D90 size of 5 μm and 47% (volume fraction) binder (mixture of polyethylene, wax and lubricant). Material data related to viscosity......
Fabrication and wear properties of co-deposited Ni-Cr nanocomposite coatings ZHOU Yue-bo(周月波), ZHAO Guo-gang(赵国刚), ZHANG Hai-jun(张海军) College of Materials Science and Engineering, Heilongjiang...; Abstract: Ni-Cr nanocomposite coatings with different Cr particles contents were developed by electrodeposition......
biosensor by entrapping glucose oxidase into chitosan/nanoporous ZrO2/multiwalled carbon nanotubes nanocomposite film WEI Wan-zhi(魏万之)1, ZHAI Xiu-rong(翟秀荣)2, ZENG Jin-xiang(曾金祥)1, GAO Yan... nanocomposite material for construction of glucose biosensor was prepared. The biosensor was formed by entrapping glucose oxidase(Gox) into chitosan/nanoporous ZrO2/multiwalled carbon nanotubes......
Structure and Photoluminescence of Mullite-Ge Nanocomposite高乐,王皓摘 要:Al12Si3.75Ge0.25O26 ceramic powder was prepared by sol-gel method using Al(NO3)3,Si(OC2H5)4 and Cl3GeCH2-CH2COOH as precursors.The structural formation of Al12Si3.75Ge0.25O26 ceramic powder was analyzed by XRD.After reduction by flowing H2/Ar mixture gas,strong room temperature......
