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">Scandia doped tungsten powders were prepared by spray drying combined with two-step hydrogen reduction.The particle size of doped tungsten powder,powder morphology and doped tungsten matrix were... on the property of tungsten powder were studied by the temperature programmed reduction.The experimental results showed that the pre-cursor powders prepared by spray drying had spherical shape.The addition......
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was performed for evaluating a series of new grade tungsten. The melting behaviour and crack formation of the various tungsten grades during the high heat flux were analyzed. 2 Experimental Powders... flux testing on tungsten coated CFC blocks with a electron penetration of a few micrometers in the coatings of 200 μm at an acceleration voltage of 120 kV [15]. 3 Results and discussion 3.1......
technique. The effect of the solution composition and plating conditions on the electroless copper plating was studied. The uncoated and coated powders were subjected to the microstructural studies by SEM and the phases were analyzed by XRD. The results indicate that the Mo powders are coated with copper, at the same time, Mo-Cu composite powders with Cu content ranging from 15% to 85% (mass fraction......
, abrasion performance and hardness were analyzed. Effects of graphite particle size and copper-coated graphite on its performance were also investigated. The results show that too high or too low... are, and the greater hardness is. The copper-coated graphite can improve the sintering process of copper matrix pantograph slider material, decrease its porosity and resistivity, and increase its abradability......
Spherical modification of tungsten oxide powder and its mechanism analysisCong-Cong Wang1,Cheng-Chang Jia1,Peng Gao1,Guo-Cheng Gai2,Yu-Fen Yang21. School of Materials Science and Engineering... production costs, complexity of equipment, and difficulty in controlling parameters,spherical or subglobose tungsten powder preparation method cannot meet the demand of industrial production.Tungstic......
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Manufacturing process and microstructure of copper-coated aluminum wiresXiao-hua Chen1,2,Xin Tang3,Zi-dong Wang3,Xi-dong Hui1,Mo Li2,Yong-wei Wang41. State Key Laboratory for Advanced Metals... and Technology Beijing4. School of Mechanical Engineering, University of Science and Technology Beijing摘 要:Copper-coated aluminum wires exhibit good......
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