共搜索到30404条信息,每页显示10条信息,共3041页。用时:0小时0分0秒312毫秒
in conductivity. Key words: dielectric characteristics; electrophysical properties; composite varistor; frequency dependence 1 Introduction ZnO-based ceramics with a few metal oxide additives... capacitor–varistors [J]. Materials Letters, 2003, 57: 1400-1405. [21] GHAFOURI M, PARHIZKAR M, BIDADI H, AREF S M, OLAD A. Effect of Si content on electrophysical properties of Si-polymer composite varistors......
......
: TQ153.1 文献标识码: A Anti-corrosion properties of Ni-P alloy deposits prepared from electrolytes containing NaH2PO2·H2O LIU Ying-ke1, CHENG Ying-liang1, ZHANG Zhao2, WANG Hui-min1,CHEN Zhen-hua1, WU... resistance of the deposits acquired at low temperature is better. Key words: NaH2PO2·H2O; Ni-P alloy; electroplated deposit; anti-corrosion properties 镍磷合金具有抗还原性腐蚀介质的特性, 尤其是当镍磷合金中磷的质量分数达到......
Microstructure and mechanical properties of Mg-xLi-3Al-1Ce alloys ZHANG Mi-lin(张密林), WU Rui-zhi(巫瑞智), WANG Tao(王涛), LIU Bin(刘滨), NIU Zhong-yi(牛中毅) Key Laboratory of Superlight Materials...-ray diffractometry. The mechanical properties of these alloys were measured with tensile tester. The results show that, Mg-5Li-3Al-1Ce has a single phase (α) structure, Mg-8Li-3Al-1Ce has a double......
synthesized and the relationship of their morphology and microwave absorbing properties was studied. The electromagnetic parameters of these flower-like Ni were measured with vector network analyzer... 2 mm show excellent absorbing ability. This result is expected to play a guiding role in the preparation of the highly efficient absorber.Key words:nickel; flower-like; microwave absorbing properties......
......
......
Microstructure and properties of modified and conventional 718 alloys LIU Fang (刘 芳)1, 2, SUN Wen-ru(孙文儒)2, DU Jin-hui(杜金辉)3, DONG Jian-xin(董建新)4,GUO Shou-ren(郭守仁)2, YANG Hong-cai(杨洪才)1, HU Zhuang... and mechanical properties of the modified alloy were compared with those of the conventional alloy by SEM and TEM. The precipitation of the grain boundaries of the two alloys is different. The Cr-rich......
Microstructure and mechanical properties of Al2O3/TiAl composite AI Tao-tao(艾桃桃), WANG Fen(王 芬), ZHU Jian-feng(朱建锋) School of Materials Science and Engineering, Shaanxi University.... The effects of Nb2O5 content on the microstructure and mechanical properties of the composites were investigated. The results show that the ultimate phases of the composite consist of TiAl, Ti3Al......
......