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source and machine is steadily going up[3-7]. Tungsten based high-density alloys are typically fabricated by liquid phase sintering mixed elemental powders. However, the high sintering temperature.... A primary optimized technique for fabricating high-properties tungsten based high-density alloys was put forward. 2 EXPERIMENTAL The high pure initial element powders, such as W, Ni, Fe, Mo and RE......
Structural Analysis and Electrical Property of Tungsten Bronze Prepared by Rare Earth Gaseous Permeation 韦永德1,陈刚1,李中华1,苏铭汉1,李昕1 (1.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China) Abstract:The cubic sodium tungsten bronzes, NaxWO3(x=0.854 and 0.814)were prepared by rare earths gaseous permeation method. Structural analysis was carried out by Rietveld......
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......
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A NEURAL NETWORK FOR WELD PENETRATION CONTROL IN GAS TUNGSTEN ARC WELDING J.Q. Gao1,C.S. Wu1,Y.H. Zhao1 (1.Institute of Materials Joining, Shandong University, Jinan 250061, China) Abstract:Realizing of weld penetration control in gas tungsten arc welding requires establishment of a model describing the relationship between the front-side geometrical parameters of weld pool and the back-side......
的磨损表面形貌.采用INCAPentaFET-x3能谱仪对磨损表面进行局部元素分析.采用Bruker DEKTAK XT探针式表面轮廓仪测量胎体材料的磨损表面3D轮廓和磨损面的表面粗糙度Ra. 表1 铸造碳化钨粉末的成分与性能 Table 1 Compositions and properties of cast tungsten carbide powders used...(5): 1235-1243. XIE Huan-wen, LIU Xin, HU Ke, CAI Yi-xiang. Effect of cast tungsten carbide powders on microstructure and mechanical properties of the PDC bit matrix[J]. Acta Materiae Compositae......
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: The mechanisms by which titanium carbide (TiC) improves the properties of tungsten carbide (WC) coatings deposited on duplex stainless steels using laser particle injection technique were investigated. The relationships between laser process parameters and the synthesized composite were studied. The morphologies and microstructures of the feedstock powders and composite coatings were characterized using......
to oxygen at the visible radiation, the rate for oxygen evolution of 0.05% Pr3+ doped WO3 is up to 196.64 μmol/(L?h), which is two times of that of pure WO3. Key words: praseodymium; tungsten trioxide...够拓展WO3样品对可见光的响应范围,提高其光催化活性. 3) 在可见光辐射下,Pr3+掺杂WO3样品光解水产氧速率高达196.64 μmol/(L?h),是纯WO3的2倍. REFERENCES [1] Gratian R B, Hironori A. The visible light induced photocatalytic activity of tungsten trioxide......