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Preparation of CaB6 powder via calciothermic reduction of boron carbideYu Wang1,Guo-hua Zhang1,Yue-dong Wu1,Xin-bo He21. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing2. Institute for Advanced Materials and Technology, University of Science and Technology B......
Action of New Rare Earth Additions in Cemented CarbideChenguang LIN General Research Institute for Non-ferrous Metals,Beijing,100088,China摘 要:<正> The existence form and distribution of new rare earth additions in WC-Co,WC-TiC-Co.Cementedcarbide and i......
Kinetics of Carbide Layer Forming on the Surface of Steel in Molten SystemsShuhuan Wang Shengwen Wu Shantong Jin Metallurgy School, UST Beijing, Beijing 100083, China摘 要:<正> A mathematical model of kinetics of carbide layer formed on the surface of steel in fused system was set up with the theory of non-stable diffusion mass transfer and regular......
Mierostrueture and Properties of Coating from Cemented Carbide on Surface of Hl3 Steel周小平,华林摘 要:<正>The microstructures and properties of coating from cemented carbide on the substrate of H13 by vacuum powder sintering were studied.The effect of sintering temperature on the microstructures of coating was discussed.The interface characteristics......
different Ti contents, and morphology of Nbss changes from the cellular structure to dendrite. Key words: Nb-Ti-C alloy; carbide transformation; niobium solid solution ... and (Nb, Ti)C with FCC NaCl structure. It is noted that more carbides are got compared with Nb-5Ti-4C alloy, carbide network becomes densely and complex, and the primary dendrite becomes more......
高纯净GCr15轴承钢组织演变与快速球化工艺的研究闫文凯1,2,杨卯生2,杜景红0,俞峰1(1.云南省昆明市昆明理工大学材料科学与工程学院2.北京市钢铁研究总院结构材料研究所)摘 要:利用碳化物的金相形貌,数量,大小,分布及圆整度表征试验钢的球化质量,通过不同的热处理制度研究高纯净GCr15轴承钢预备组织与退火工艺对碳化物球化质量的影响.试验表明:优良的预备组织适宜的退火制度有利于碳化物在短时间内球化和细化,采用文中退火制度a,GCr15轴承钢碳化物圆整度为0.087μm,平均粒径为0.27μm,球化时间比传统......
Investigation on the preparation of Si/mullite/Yb2Si2O7 environmental barrier coatings onto silicon carbide许越,闫钊通School of Chemistry and Environment,Beijing University of Aeronautics and Astronautics... to the rapidly decreased mechanical properties at relative high temperature are gradually replaced with silicon-based non-oxide silicon carbide ceramics.However,silicon carbide ceramic materials tend......
Research on rare earth and iron-rich diamond-enhanced tungsten carbide composite buttonSHI Xiaoliang, SHAO Gangqin, DUAN Longchen, and YUAN Runzhang State Key Laboratory of Advanced Technology...="ChDivSummary"><正>At the present time in china, the binder used in tungsten carbide composite button is mainly cobalt, which is very expensive. In order to solve the problems, a new type of rare earth......
Investigation on the preparation of Si/mullite/Yb2Si2O7 environmental barrier coatings onto silicon carbide许越,闫钊通School of Chemistry and Environment,Beijing University of Aeronautics and Astronautics... to the rapidly decreased mechanical properties at relative high temperature are gradually replaced with silicon-based non-oxide silicon carbide ceramics.However,silicon carbide ceramic materials tend......
Synthesis and characterization of La(OH)3 nanopowders from hydrolysis of lanthanum carbide李其亭1,倪建森1,吴移清1,杜亚男1,丁伟中2,耿淑华21. Institute of Materials,Shanghai University2. Department of Materials Engineering of Shanghai University摘 要:The lanthanum carbide alloy was induction melted in vacuum induction melting furnace from lanthanum and graphite with the mass......
