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CRYSTALLIZATION OF SODIUM TUNGSTEN BRONZE USING ELECTROLYSIS WITHREVERSE CURRENT+Huang Huan1; Yang Songqing1; Tang Shu2(1. Institute of Metallurgical Physicochemistry and Materials, Central South... tungsten bronze (Na_xWO_3) crystals were prepared from a molten mixture of sodium tungstate (Na_2WO_4 ) and tungstic trioxide (WO_3) at 800℃. Crystal structure, lattice parameter, and sodium content......
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Dynamic softening behaviors of 7075 aluminum alloy QUAN Guo-zheng(权国政)1, LIU Ke-wei(刘克威)1, ZHOU Jie(周 杰)1, CHEN Bin(陈 斌)2 1. School of Material Science and Engineering, Chongqing University... hot deformation of 7075 aluminum alloy were studied by isothermal hot compression tested at temperatures of 250, 300, 350, 400 and 450 ℃ and strain rates of 0.01, 0.1, 1 and 10 s-1 on Gleeble1500......
Preparation,Structure and Dielectric Properties of Tungsten Bronze Ferroelectrics in SrO-Eu2O3-TiO2-Nb2O5 System胡长征摘 要:Compounds Sr4Eu2Ti4Nb6O30 and Sr5EuTi3Nb7O30 with filled tetragonal tungsten bronze structure were prepared,and the dielectric characteristics and ferroelectric transition were investigated.Both ceramics displayed weak frequency......
Defect analysis of complex-shape aluminum alloy forging SHAN De-bin(单德彬), ZHANG Yan-qiu(张艳秋), WANG Yong(王 勇), XU Fu-chang(徐福昌), XU Wen-chen(徐文臣), L? Yan(吕 炎) School of Materials Science... aluminum alloy with complex shape. The complexity of forging is easy to lead to the occurrence of the defects, such as underfilling, folding, metal flow lines disturbance and fibre breaking. The reasons......
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Annulus electromagnetic stirring for preparing semisolid A357 aluminum alloy slurry BAI Yue-long(白月龙), XU Jun(徐 骏), ZHANG Zhi-feng(张志峰), SHI Li-kai(石力开) General Research Institute...; Abstract: The effects of pouring temperature and annulus gap width on the microstructure of the semi-solid A357 aluminum alloy......
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