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Development of gas tungsten arc welding using current pulsing technique to preclude chromium carbide precipitation in aerospace-grade alloy 80AP.Subramani,M.ManikandanSchool of Mechanical Engineering, Vellore Institute of Technology摘 要:Weldments were produced using gas tungsten arc welding(GTAW) and pulsed current gas tungsten arc welding(PCGTAW......
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Preparation and properties of Os–Ir–Al alloy for impregnated tungsten cathodesYang Xia,Yuan-Feng Xie,Heng Jiang,Hong Lv,Yu-Min WangPowder Metallurgy and Special Material Research Department,General Research Institute of Nonferrous Metals摘 要:Os–Ir–Al alloy was fabricated by powder metallurgy technique.IrAl and OsIr interalloys were synthesized to reduce......
CRYSTALLIZATION OF SODIUM TUNGSTEN BRONZE USING ELECTROLYSIS WITHREVERSE CURRENT＋Huang Huan1; Yang Songqing1; Tang Shu2(1. Institute of Metallurgical Physicochemistry and Materials, Central South... tungsten bronze (Na_xWO_3) crystals were prepared from a molten mixture of sodium tungstate (Na_2WO_4 ) and tungstic trioxide (WO_3) at 800℃. Crystal structure, lattice parameter, and sodium content......
Crystal growth of tungsten during hydrogen reduction of tungsten oxide at high temperature WU Xiang-wei(吴湘伟)1, 2, LUO Jing-song(罗劲松)2, LU Bi-zhi(陆必治)2, XIE Chen-hui(谢晨辉)2, PI Zhi-ming...; Abstract: Crystal growth of tungsten during hydrogen reduction of tungsten oxide (WO3) to prepare......
Warm compaction powder metallurgy of Cu NGAI Tungwai Leo(倪东惠), WANG Shang-lin(王尚林), LI Yuan-yuan(李元元), ZHOU Zhao-yao(周照耀), CHEN Wei-ping(陈维平) (Guangdong Key Laboratory for Advanced Metallic... warm compaction parameters for producing high density powder metallurgy copper material are obtained. Compacts with green density of 8.6g/cm3 and a sintered density of 8.83g/cm3 can be produced......
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Comparative stability analyses of traditional and selective room-and-pillar mining techniques for sub-horizontal tungsten veinsVidal Félix Navarro Torres,Carlos Dinis da Gama,Matilde Costa e Silva,Paula Falco NevesMining and Geo-resources Engineering Department of IST,Technical University of Lisbon摘 要:The stability and productivity concerning......
Characterization and in-situ formation mechanism of tungsten carbide reinforced Fe-based alloy coating by plasma claddingMi-qi Wang,Ze-hua Zhou,Lin-tao Wu,Ying Ding,Ze-hua WangCollege of mechanics and materials, Hohai University摘 要:The precursor carbonization method was first applied to prepare W–C compound powder to perform the in-situ synthesis......
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