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Influence of Solidiflcation Rate on Microstructures of Cast Strips and Corresponding Sintered NdFeB Magnets徐静,颜世宏,于敦波,李宗安,李世鹏,李红卫摘 要:<正>The influences of solidification rate on the microstructures of cast strips and corresponding sintered NdFeB magnets were investigated. The experimental results show that the volume fraction and size of columnar......
氧化铅锌矿直接硫酸浸出贺山明1,王吉坤2,李勇1(1.云南省昆明市昆明理工大学冶金与能源工程学院2.云南冶金集团股份有限公司 技术中心,昆明 650031)摘 要:探讨用硫酸直接浸出氧化铅锌矿,研究各种因素对浸出的影响.结果表明,在最佳工艺条件下,锌的浸出率可达97%以上,铅入渣率可达98%以上,产液速率大于162.5 L/m2·h,渣含锌约2.5%,渣含铅量高达40%以上,浸出渣可送往炼铅系统处理.关键词:冶金技术; 氧化铅锌矿; 硫酸浸出; 过滤性能; 浸出率; 铅入渣率......
Enhanced quadrature signaling-based cooperative transmission with full rate and full diversityLU Tao(芦涛), GE Jian-hua(葛建华), YANG Ye(杨烨), GAO Yang(高洋) (State Key Laboratory of Integrated... causes date rate loss compared with direct transmission. In this work, our focus is on recovering from the data rate loss while simultaneously achieving spatial diversity. Particularly, an enhanced......
Electrochemical performance of nickel oxide/KOH/active carbon super-capacitorXiaofeng Wang1), Dazhi Wang1), Cuiwei Do2), Xianghua Kong2), and Qingguo Liu2)1) Department of mechanical engineering... utilization at high rate of discharge (i.e., high power density) and had excellent cycle life more than 1 000 times, while the capacitance of the cell composed of two identical nickel oxide......
CORROSION AND MECHANICAL BEHAVIOR OF COPPER- NIOBIUM NANO-FILAMENTARY MICRO-COMPOSITES FOR HIGH PERFORMANCE ELECTRICAL CONDUCTOR WIRE S.I.Hong1,Y.Choi2,T.W.Lim2 (1.Department of Metallurgical... boundaries were absorbed at copper/niobium phase boundaries with increasingniobium content. The corrosion potential and rate in aqueous 30% HCl-10% FeCl3 was-680.3mVSHE and 1.179×10-5A/cra2. The corrosion......
Low-temperature performance and high-rate discharge capability of AB5-type non-toichiometric hydrogen storage alloy LU Yan-jing(陆延静), ZHU Lei(朱 磊), CHENG Yan(成 艳), CHEN Hui(陈 晖), JIAN Xu-yu(简旭宇... Abstract: Low-temperature performance and high-rate discharge capability of AB5-type non-stoichiometric hydrogen storage are studied. X-ray diffraction(XRD), pressure-composition-temperature(PCT) curves......
and both porosity and pore size play an important role in the performance for the porous copper.Furthermore,the heat dissipation rate is higher when the forced air was circulated along the specimens than...Heat Dissipation Performance of Porous Copper with Elongated Cylindrical PoresHao Du1,Dongzhu Lu1,Jianzhong Qi1,Yanfang Shen1,Lisong Yin2,Yuan Wang3,Zhongguang Zheng1,Tianying Xiong11. Division......
J. Cent. South Univ. (2021) 28: 2179-2192 DOI: https://doi.org/10.1007/s11771-021-4761-3 Performance and mechanism of solid waste coking sulfur paste modified asphalt mixture before and after... waste coking sulfur paste and the improvement of performance of the asphalt mixture, a method for preparing modified asphalt mixture with coking sulfur paste modifier (CSPM) is herein proposed......
Novel High Rate Lithium Intercalation Cathode Materials Cheng Yushan1,Zhang Yong2,Liu Yuwen1,Hu Xinguo2 (1.Jiangmen JJJ Battery Co., Ltd, Jiangmen 529000, China;2.Department of Applied Chemistry... of V2O5. A new type of V2O5/carbon/Nd2O3 composite was prepared by mixing vanadium oxide hydrosol, acetone, carbon and Nd2O3 powder. High rate discharge/charge property of the composite electrode......
material were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The performance including cycling stability, diffusion coefficient under different voltage, C-rate discharge... a stable cycle performance in the range from 3.0 V to 4.2 V. It was explained that the rate of Li ion diffusion increased in the batteries using SrO/Li2O/La2O3/Ta2O5/TiO2-coated LiCoO2 as the cathode......