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oxide scales were in-situ prepared on the surface of HP40 alloy in the H2/steam atmosphere with low oxygen partial pressure at 900?1 200 ℃. Then, the oxide scales on HP40 alloy were characterized by SEM... MnCr2O4 spinel layer, the middle Cr2O3 rich layer, and the most inner SiO2 layer, respectively.Key words:HP40 alloy; in-situ oxidation; low oxygen pressure......
Effect of specific pressure on microstructure and mechanical properties of squeeze casting ZA27 alloy LI Run-xia(李润霞), LI Rong-de(李荣德), BAI Yan-hua(白彦华), QU Ying-dong(曲迎东), YUAN Xiao-guang(袁晓光...; Abstract: The effect of specific pressure......
Trans. Nonferrous Met. Soc. China 25(2015) 2113-2121 Effect of ball milling on microstructural evolution during partial remelting of 6061 aluminum alloy prepared by cold-pressing of alloy powders Yu... September 2014; accepted 29 December 2014 Abstract: The effect of ball milling on the microstructural evolution was investigated during partial remelting of 6061 aluminum alloy prepared by cold-pressing......
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......
Simulation and experimental study of high pressure switching expansion reduction considering real gas effectLUO Yu-xi(罗语溪)1, ZHANG Yan-jun(张彦军)1,2, GAO Yu-bao(高玉宝)1, WANG Xuan-yin(王宣银)3, XU Zhi-peng...) uses a switch valve instead of the throttle valve to realize electronically controlled pressure reduction for high pressure pneumatics. A comprehensive and interactive pneumatic simulation model......
than that of Ta. Hence, O atoms easily break away from Ta2O5 films, leading to the formation of oxygen vacancies. With the increase of sputtering pressure, oxygen partial pressure increases, which... Effect of sputtering pressure and rapid thermal annealing on optical properties of Ta2O5 thin films ZHOU Ji-cheng(周继承), LUO Di-tian(罗迪恬), LI You-zhen(李幼真), LIU Zheng(刘 正) School of Physics......
Deformation behavior of sheet metals and viscous medium in viscous pressure bulging process with back viscous pressureWANG Zhong-jin(王忠金), LIU Jian-guang(刘建光), WANG Zhong-ren(王仲仁), LV Jun (吕 军)(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:Viscous pressure forming (VPF) is a newly developed flexible sheet metal forming process......
J. Cent. South Univ. Technol. (2009) 16: 0653-0657 DOI: 10.1007/s11771-009-0108-1 Estimation of compaction grouting pressure in strain softening soils YANG Xiao-li(杨小礼), ZOU Jin-feng(邹金锋...; Abstract: A new method was proposed to predict the limited compaction grouting pressure for the soft soils. Theoretical basis......
余实验条件同3.1节.实验结果如图5所示.在本实验条件下,Zn仍属易浸出元素(浸出率高于98%). 图5 氧分压对浸出率的影响 Fig.5 Effect of oxygen partial pressure on leaching rate of metals 由图5可见,氧分压对As和Fe的浸出率影响不明显.在0.3~0.7 MPa范围内,随氧分压增高,Cu浸出...; 文献标识码:A Pressure leaching technique of smelter dust with high-copper and high-arsenic XU Zhi-feng, NIE Hua-ping, LI Qiang, LU Qiu-hu, WANG Wei, YUE Ri-hui......
investigated. Effects of stirring speed, temperature, sulfuric acid concentration, oxygen partial pressure and particle size on extraction rate of indium were studied. The results show that leaching rates.../min and oxygen partial pressure is 0.60 MPa. The indium leaching process is conformed to shrinking ore model. It is controlled by chemical reaction in its early stage, then switches to mix-controlled......
