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">The decomposition of copper anode slime heated by microwave energy in a sulfuric acid medium was investigated. Leaching experiments were carried out in a multi-mode cavity with microwave assistance. The leaching...%, respectively. Meanwhile, a conventional leaching experiment was performed in order to evaluate the influence of microwave radiation. The mechanism of microwave-assisted leaching of copper anode slime......
Comparative study on discharge conditions in micro-hole electrical discharge machining of tungsten carbide (WC-Co) material Hyun-Seok TAK1, Chang-Seung HA2, Dong-Hyun KIM2, Ho-Jun LEE2.... For machining difficult-to-cut materials, such as tungsten carbide, micro-electrical discharge machining(EDM) is one of the most effective methods for making holes because the hardness is not a dominant......
Microstructure and properties of ultra-fine tungsten heavy alloys prepared by mechanical alloying and electric current activated sintering LI Xiao-qiang(李小强), XIN Hong-wei(辛红伟), HU Ke(胡 可), LI... grains and homogeneous microstructure[11-12]. It has also been used to fabricate ultra-fine grained tungsten powders and consequently to enhance the properties of sintered materials. Recently, a novel......
Intensification of pretreatment and pressure leaching of copper anode slime by microwave radiationYANG Hong-ying(杨洪英)1, MA Zhi-yuan(马致远)1, 2, HUANG Song-tao(黄松涛)2, LV Yang(吕阳)1, XIONG Liu(熊柳)1(1... 100088, China)Abstract:The application of microwave irradiation for pretreatment of copper anode slime with high nickel content prior to pressure sulfuric acid leaching has been proposed. The microwave......
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......
Mechanical Property and Microstructure of Alkali-activated Yellow River Sediment-Coal Slime Ash Composites李高年1,王宝民1,LIU Hui2,SONG Wanzeng2,HAN Junnan11. School of Civil Engineering, Dalian University... and coal slime ash via alkali-activating method. XRD, FTIR and SEM/EDS were used to characterize the alkali-activated products and microstructure of the composite material. Compressive strength......
裂和穿晶断裂混合的断裂方式,晶粒大小也从不添加TiC时的5~10 μm变为2~5 μm. REFERENCES [1] 徐 竹. 钨铜复合材料制备技术的发展与应用[J]. 新技术新工艺, 2016(6): 76-78. XU Zhu. Development and application of preparation technology of tungsten and copper..., CHENG Hui-chao. Synthesis and sintering of ultra-fine/nano-W-10%Cu composite powder[J]. Journal of Central South University (Natural Science Edition), 2009, 40(5): 1235-1239. [3] 黄丽枚, 罗来马, 丁孝禹, 罗广南......
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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Partial melting and re-solidification in partially melted zone during gas tungsten arc welding of AZ91 cast alloy T. P. ZHU1, Z. W. CHEN2, W. GAO1 1. Department of Chemical... in constitutional liquation in the original interdendritic regions and in the formation of a partially melted zone (PMZ). In this study, gas tungsten arc welding (GTAW) and partial melting (simulated using......
