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the structures and properties of the powder and the deposit. It is found that the primary carburization reaction in the induction plasma starts from the surface of tungsten particles when the particles are melted. Tungsten particles are partially carburized inside the reactive plasma. Complete carburization is achieved through the secondary carburization reaction of the deposit on substrate at high......
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for the production of cast tungsten carbide [J]. Metal Powder Report, 1986, 41(12): 887-888, 890. [9]Rock Bit with Hardfacing Material Incorporating Spherical Cast Carbide Particles [P]. US5791422. [10...Article ID: 1003-6326(2005)02-0270-05 Influence of fabricating process on microstructure and properties of spheroidal cast tungsten carbide powder DAI Yu(戴 煜)1, 2, TAN Xing-long(谭兴龙)1, LI Yu......
Research on Laser Cladded Nickel Based Nanometer Tungsten Carbide Composite Coating DAI Jian-qiang1,ZOU Chang-gu1,YAN Min-jie1,XI Wen-long1,ZHANG Guang-jun1,GE Da-fang1,WANG Hui-Ping1 (1.Shanghai... of coating is metallurgically bonded with stainless steel base, eliminating porosities and cracks. The coating has a considerable quantity of nanometer particles visible with a granularity ≤ 100nm under......
particles are spheroidized at the same powder feed rate under the same plasma spray condition although molybdenum has a lower melting point. A small fraction of tungsten is evaporized and condensed either on the surface of tungsten particles nearby or on the wall of spray chamber. Tungsten oxides were found in tungsten powder processed under soft vacuum condition. Extremely large grains form inside some......
Synthesis of nanosized tungsten powderGuangfeng Lu, Junjie Hao, Zhimeng Guo, Ruizhu Zhang, Ji Luo, and Liying Zhang Materials Science and Engineering School, University of Science and Technology...="ChDivSummary"><正>Nanosized tungsten powder was synthesized by means of different methods and under different conditions with nanosized WO3 powder. The powder and the intermediate products were......
Influence of earth gravity on reaction engineering of tubular reactor for high concentration tungsten ion-exchange ZHAO Zhong-wei(赵中伟), XIAO Lu-ping(肖露萍), GUO Chi-hao(郭持皓), CHEN Xing-yu(陈星宇... beneficial compared with downflow-feeding mode, since the flow pattern of the fluid in the reactor is closer to plug flow. The result of dynamic experiment conducted in ion-exchange of tungsten......
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