共搜索到13864条信息,每页显示10条信息,共1387页。用时:0小时0分0秒492毫秒
Low-Temperature Hydrogen Storage Alloy and Its Application in Ni-MH Battery 吴朝玲1,涂铭旌1,付春艳1,陈云贵1,陶明大1 (1.School of Materials Science and Engineering, Sichuan University, Chengdu 610064,China... both 0.4 and 0.2C rate. The kinetics parameters and hydrogen diffusion coefficient indicate that the low-temperature performances of the alloys are mainly controlled by hydrogen diffusion process......
J. Cent. South Univ. Technol. (2010) 17: 881-887 DOI: 10.1007/s11771-010-0571-8 Deformation simulation of low-temperature high-speed extrusion for 6063 Al alloy WANG Meng-jun(王孟君)1, 2, HE Zhao... Heidelberg 2010 Abstract: The hot compression test of 6063 Al alloy was performed on a Gleeble-1500 thermo-simulation machine, and the forming of 6063 rod extrudate in low-temperature high-speed extrusion......
Low-temperature Synthesis of Large-area Films of Molybdenum Trioxide Microbelts in Air and the Dependence of Their Field Emission Performance on Growth ConditionsDongmei Ban,Ningsheng Xu,Shaozhi Deng... field emission performance makes it a potential low-cost technique for the preparation of large-area field emission cold cathode material.关键词:......
Effect of electrolyte concentration on low-temperature electrochemical properties of LaNi5 alloy electrodes at 233 K TAO Mingda1,CHEN Yungui1,ZHANG Xiaoyan1,WU Chaoling1 (1.School of Materials Science and Engineering, Sichuan University, Chengdu, 610065, China) Abstract:The effect of KOH electrolyte concentration on low-temperature electrochemical properties of LaNi5 alloy electrodes at 233 K......
additive on the cycle performance and low temperature discharge capacity of lithium battery with PC based electrolyte was studied. Electrochemical impedance spectroscopy (EIS), X-ray photoelectron..., JOW T R. The low temperature performance of Li-ion batteries[J]. J Power Sources, 2003, 115(1): 137-140. [3] FLEISCHHAMMER M, WALDMANN T, BISLE G, et al. Interaction of cyclic ageing at high-rate......
J. Cent. South Univ. (2016) 23: 2763-2770 DOI: 10.1007/s11771-016-3338-z Microstructure and properties of low-temperature aged Dy-doped Nd-Fe-B magnet WANG Xiao-li(王晓丽)1, 2, HU Qing-xian(胡庆贤)1, DING... 265500, China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: In this work, a low temperature ageing process for the high coercivity Dy-doped Nd-Fe-B magnets......
热处理趣谈杨平,罗海文北京科技大学冶金与生态工程学院摘 要:人类文明从石器时代进入到铜器和铁器时代,逐渐意识到热处理的重要作用.早在公元前770至前222年,中国人就已经在生产实践中发现钢铁在不同的温度和加压变形处理后性能有很大区别.文章结合日常做菜常用的烹饪知识帮助理解热处理的效果,使得读者能够轻松理解经过不同的加热和冷却过程,钢的组织结构会发生变化,能够消除加工后的各种缺陷,提高所需的物理化学性能.热处理工艺对于工件的使用,显得尤为重要,更是钢铁加工工业中的核心工艺.关键词:......
趣谈钻石钟华邦摘 要:趣谈钻石钟华邦在美丽迷人的珠宝里,钻石,红宝石,蓝宝石,祖母绿被公认为四大名贵宝石,而钻石位于名贵宝石之首.神奇的钻石晶莹,闪亮,珍贵,稀少,故购买和佩戴钻石饰品不仅能美化生活,还是财富的象征.虽然钻石几乎众所周知,但是人们对它的认识还有深浅不同哩!...关键词:......
趣谈孔雀石钟华邦摘 要:趣谈孔雀石钟华邦美丽的珠宝给生活增添光彩.<珠宝科技>1996年第2期中的孔雀石工艺品-孔雀开屏和珠宝盆景中的孔雀石彩照令人产生浓厚的兴趣!孔雀石是含铜硫化物矿床氧化带内一种普通的矿物,人们对它并不陌生.然而宝石级孔雀石少见,孔雀石猫眼更稀少.笔者多...关键词:......
案例趣谈李广信摘 要:从这一期开始 ,我们开辟"岩土漫话"专栏.在这个专栏里 ,古今中外岩土工程界发生的事 ,还有岩土工程的未来 ,都可能成为漫谈的话题."漫话"之人可来自四方 ,"漫话"之事可令人莞尔 ,也可发人深思.希望您能从中得到有用且愉悦的信息 ,增进对岩土工程的了解 ,寻觅到"所见略同"的朋友.这一栏目要传递的是"大珠小珠落玉盘"的美妙 ,待回味的是"高山流水"那绕梁三日而不绝的余音.它是互动的 ,希望读者喜欢这个栏目 ,参与这个栏目 ,撰写趣文 ,提供话题 ,引见作者 ,推荐文章 ,并将您对这个......