共搜索到31587条信息,每页显示10条信息,共3159页。用时:0小时0分0秒500毫秒
performances, especially for the high rate charge/discharge ability at low temperature because of its poor conductivity. In this work, the effects of erbium element added by mechanically mixture... Effects of erbium additions on high temperature performance of high power Ni-MH batteries XIE Shou-yun(谢守韫), CHENG Yan(成 艳), JIAN Xu-yu(简旭宇), ZHU Lei(朱 磊), CHEN Hui(陈 晖), WANG Zhong(王 忠) Energy......
识码:A Oxidation kinetics of NiCoCrAlYTa coating by low pressure plasma spraying ZHOU Ke-song1, LIANG Xing-hua1, 2, LIU Min1, DENG Chang-guang1 (1. Material Surface Center, Guangzhou Research... on Ni-based single crystal super-alloys by low pressure plasma spraying (LPPS). Oxidation kinetics of the coating oxidated for 200 h at three different temperatures was investigated. The results show......
of the material becomes more apparent. The pressing load and peak temperature rise of the billet become low as the interfacial friction coefficient decreases. The effects of the corner angle of mold... of pressing temperature on microstructure and tensile behavior of low carbon steels and Ti processed by equal channel angular pressing, and it was shown that ECAP temperature has an important effect......
......
热轧屈服强度550MPa高强度钢板组织性能刘东升1,李庆亮1(1.江苏省苏州市张家港市江苏沙钢钢铁研究院)摘 要:为开发屈服强度大于550 MPa,-60℃冲击功高于37 J的高强度热轧厚钢板,开展了系列试验研究.提出2种试验钢,即CSiMnCuNiMo(A)和CSiMnCuNiCrMo(B)低合金钢.采用Gleeble 3800热模拟试验机,系统研究了钢A在热机变形条件下奥氏体连续冷却相变动力学和显微组织变化规律.在二辊可逆试验轧机上,进行了宽厚板控制轧制和控制冷却试验,研究了2种钢的显微组织和力学性能变化规......
Study on reaction mechanism of low temperature preparation of nanocrystalline LaCoO3-λ YANG Qiuhua1,LI Ning1,SHEN Haiyun1 (1.Department of Chemistry,School of Science,Tianjin University,Tianjin... that nanocrystaUine LaCoO3-λwith a granula of 30-50 nm had a cubic perovskite structure.The reaction mechanism of low temperature preparation was suggested as fol-lows:the metal complex was first formed......
J. Cent. South Univ. (2016) 23: 1719-1728 DOI: 10.1007/s11771-016-3226-6 Temperature control for thermal treatment of aluminum alloy in a large-scale vertical quench furnace SHEN Ling(沈玲), HE Jian... Heidelberg 2016 Abstract: The temperature control of the large-scale vertical quench furnace is very difficult due to its huge volume and complex thermal exchanges. To meet the technical requirement......
. LI Wen-xia, YIN Sheng. Low temperature combustion synthesis of ultrafine ceramic powder[J]. J Chin Ceram Soc, 1999, 27(1):71-78. (编辑袁赛前) 基金项目: 国家自然科学基金资助项目(20076025) 收稿日期: 2004-07-20; 修订日期... The calcined powders were pressed into pellets at 18MPa. These pellets were sintered at the temperature range of 900-1500℃ for 10h in air. The crystal structure of the calcined powders was analyzed using......
desirable at ambient temperature considering the low cost and easy replacement [9–13]. K2CO3, as an environmentally benign reagent, can chemically activate various carbonaceous raw materials to be ACs... of Central South University, 2015, 22 (2): 478–486. [27] AL-RAHBI A S, WILLIAMS P T. Production of activated carbons from waste tyres for low temperature NOx control [J]. Waste Management, 2016, 49: 188–195......
低温稻壳灰可控制备及复合水泥研究 胡小芳1,周潇雨1 (1.华南理工大学机械与汽车工程学院,广州,510640) 摘要:采用可控式低温稻壳灰制备装置研究了各种因素对稻壳灰产品的影响;X射线及SEM表征表明,制得的低温稻壳灰为无定形态,且颗粒粒度范围为50~100nm.将低温稻壳灰作为水泥掺合料,与硅灰和粉煤灰对比得到:低温稻壳灰对混凝土强度具有明显的提高效用;当水灰比一定,低温稻壳灰掺入量小于20%(质量分数)时,硅灰与稻壳灰的增强效果相近,可以用稻壳灰代替硅灰. 关键词:低温稻壳灰; 水泥; 强度; 控制; low temperature rice husk ash; cement; strength; controllation; [全文内容正在添加中] ......