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High pressure luminescence studies of europium doped GaN M.Spencer1,W.Jadwisie2,T.Thomas1,K.Wisniewski3 (1.Second of Electrical and Computer Engineering,Cornell University,Ithaca NY,14853,USA;2.n)czak(n;3.Institute of of Experimental Physics,Gdahsk University,ul.Wita Stwosza 57,Gdansk,80-952,Poland) Abstract:We reported on the high pressure luminescence spectra of polycrystalline Eu-doped GaN......
Kinetic study on pressure leaching of high iron sphalerite concentrate XIE Ke-qiang(谢克强)1, YANG Xian-wan(杨显万)1, WANG Ji-kun(王吉坤)2, YAN Jiang-feng(阎江峰)2, SHEN Qing-feng(沈庆峰)2 1. Faculty...; Abstract: The kinetics of pressure leaching high iron sphalerite concentrate was studied. The effects of agitation rate, temperature, oxygen partial pressure, initial acid concentration, particle size......
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Phase stability and structural distortion of NiO under high pressure ZHANG Wei-bing(张卫兵), HU Yu-lin(胡玉林), TANG Bi-yu(唐壁玉) Key Laboratory of Advanced Materials and Ryeological Properties... strong correlations are included in form of GGA+U, structural distortion under high pressure can qualitatively agree with the experiment. The related mechanism was also analyzed and discussed......
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......
Simulation of mold filling and prediction of gas entrapment on practical high pressure die castings ZHAO Hai-dong(赵海东), BAI Yan-fei(白砚飞), OUYANG Xiao-xian(欧阳晓贤), DONG Pu-yun(董普云) State..., a method for gas entrapment was established by tracking flow of entrapped gas. The model and method were applied to practical ADC1 high pressure die castings. The gas entrapment prediction was compared......
Special nanostructures in Al-Mg alloys subjected to high pressure torsion LIU Man-ping(刘满平)1, 2, Hans J. ROVEN2, LIU Xin-tao(刘新涛)1, Maxim MURASHKIN3, Ruslan Z. VALIEV3, Tamas UNG?R4, Levente... to high pressure torsion. These observations are surprising because deformation twinnings have never been observed in their coarse-grained counterparts under normal conditions. Experimental evidences......
J. Cent. South Univ. (2016) 23: 2838-2844 DOI: 10.1007/s11771-016-3347-y Fragmentation mechanism of low-grade hematite ore in a high pressure grinding roll YUAN Zhi-tao(袁致涛)1, LI Li-xia(李丽匣)1, HAN...-grade hematite ore in a high pressure grinding roll (HPGR) was studied based on the characteristics of comminuted products at different specific pressure levels. The major properties included......
J. Cent. South Univ. Technol. (2008) 15(s1): 457-461 DOI: 10.1007/s11771-008-399-7 Rheological properties of oil-based drilling fluids at high temperature and high pressure ZHAO Sheng-ying(赵胜英... viscosity, plastic viscosity and yield point of oil-based drilling fluids at high temperature and pressure was established using the method of regressive analysis. It is confirmed that the calculated data......
Strengthening pelletization of manganese ore fines containing high combined water by high pressure roll grinding and optimized temperature elevation systemZHU De-qing(朱德庆)1, YU Wei(余为)1, 2, ZHOU Xian... affects the roasting performance of pellets. In this work, high pressure roll grinding (HPRG) process and optimization of temperature elevation system were investigated to improve the strength......
