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Article ID: 1003-6326(2005)06-1333-08 Microstructure and wear properties of tungsten carbide reinforced steel matrix composites YOU Xian-qing(尤显卿)1, SONG Xue-feng(宋雪峰)1, REN Hao(任 昊...-resistance than the fine particles and operatively takes on the most applied loads. Additionally, the large particles have not been peeled during the wear process for a long time, which indicates......
that the dominant growth mechanism of the carbon-hydrogen co-reduction method is solid phase topochemical reaction. The tungsten grains obtained by the co-reduction method are sphericity or spheroidicity with fine...下不同还原方式所得初生W晶粒的HRTEM像 Fig. 5 HRTEM images of initial tungsten grains reduced at 760 ℃ for 30 min 氧化钨普通氢还原过程中,W粉颗粒的还原长大机制以"挥发-沉积"为主.在"挥发-沉积"机制中,气相迁移是一个长程快速过程,W粉晶粒通过水合氧化物WO2(OH)2的挥发→迁移→沉积→还原过程不断长大......
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STUDY OF PREPARATION PROCESS OF TUNGSTEN POWDER BY SHS WITH A MAGNESIUM THERMIT STAGE Z.H.Dou1,Y.L.WANG1,H.Yang1,T.A.Zhang1 (1.School of Metallurgy & Materials, Northeastern University, Shenyang 110004, China;2.Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016, China) Abstract:Tungsten powder was fabricated from the system CaWO4-Mg by self-propagating high......
Metal and Cemented Carbides, 2015, 43(5): 16-22. [17] JOHNSON J L, BREZOVSKY J J, GERMAN R M. Effects of tungsten particle size and copper content on densification of liquid-phase-sintered W-Cu[J.... The organization and performance of copper tungsten alloy electrical contact in different ratio[J]. Nonferrous Metals Engineering, 2014, 4(2): 29-31. [19] GB/T 8320-2003. 铜钨及银钨电触头[S]. GB/T 8320-2003. Copper......
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