共搜索到16018条信息，每页显示10条信息，共1602页。用时：0小时0分0秒908毫秒
氧化铝陶瓷与石墨材料基础理论的研究进展 施强1,贾碧1,赵子鹏1,叶振华1,刘军1 (1.重庆科技学院冶金与材料工程学院,重庆,401331) 摘要:氧化铝陶瓷与石墨作为新型材料广泛应用于机械,电子,航空,石油化工,原子能等领域,二者具有一定的相似性能,其制备,结构及性能的研究已得到广大科技工作者的重视,但对其性能基础理论的对比研究还不够.对氧化铝陶瓷和石墨材料的耐磨性,疲劳,抗氧化性,形变,导电等性能进行了比较,指出在某些领域可用氧化铝陶瓷取代石墨材料.氧化铝陶瓷的高强度,耐磨,不易变形等性能能更好地满足工业加工,对节能环保具有重大意义. 关键词:氧化铝陶瓷; 石墨; 耐磨性; 抗氧化性; 导电; alumina ceramic; graphite; wear resistance properties; anti-oxidative ability; electrical......
University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Oil–water two-phase flow patterns in a horizontal pipe are analyzed with a 16-electrode electrical resistance tomography (ERT) system...-phase flow; flow patterns; electrical resistance tomography (ERT); multivariate time-series; multivariate maximum Lyapunov exponent; correlation dimension 1 Introduction Oil–water two-phase flow......
Research About Microstructure and Wear Resistance of Hardfacing Layer on Cast Iron LI Guo-qing1,HE Bo-lin1,YU Ying-xia1 (1.College of Mechanical & Electrical Engineering, East China Jiaotong... resistance and wear mechanism of the hardfacing layer were studied.The experimental results indicate that the hardfacing technology has much more advantages and cheaper than that of traditional......
Electrical resistivity imaging (ERI) is a powerful imaging technique for hydrogeological purposes, which calculates and analyzes electrical resistivity from a large number of resistance measurements made from... of geophysical electrical resistance data than earlier pseudosection or curve fitting methods. During the last few decades, work on various linear approaches of ERI inversion has been published [2-4......
performed. SB2230 Digital DC resistance tester was used to test the resistance value of Al wires with 120 mm in length. The electrical conductivity K of the materials could be obtained according... (IACS); ρ is electrical resistivity (Ω·mm2/m); R is conductor resistance (Ω); S is conductor cross-section (mm2); L is the length of the conductor (m). 3 Results and discussion 3.1 Effect of Zr and Sc......
J. Cent. South Univ. (2016) 23: 2550-2557 DOI: 10.1007/s11771-016-3316-5 Improving energy utilization efficiency of electrical discharge milling in titanium alloys machining GUO Cheng-bo(郭成波)1, WEI... Jiao Tong University, Shanghai 200240, China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Electrical discharge milling (ED-milling) can be a good choice......
Structure,morphology and electrical resistance of WxN thin film synthesized by HFCVD method with various N2 contentsSomayeh Asgary1,Mohammad Reza Hantehzadeh1,Mahmood Ghoranneviss1,Arash Boochani1,21... for deposited films at lower N2 contents in gas mixture indicate a definite dense columnar nanostructure.The electrical resistivity results exhibit a significant drop for the WxN thin films with N2 contents......
Introduction Due to their excellent properties such as high melting point, high electrical conductivity, high oxidation resistance and good chemical stability, transition metal diboride (ZrB2, HfB2) based...J. Cent. South Univ. (2012) 19: 887-891 DOI: 10.1007/s11771-012-1088-0 Fabrication and plasma arc thermal shock resistance of HfB2-based ultra high temperature ceramics WENG Ling(翁凌)1, HAN Wen-bo(韩文波......
emission electron scanning microscope(FE-SEM) and electron probe microscopic analysis(EPMA). The corrosion resistance of the anodized alloy and the substrate was evaluated in 5% NaCl solution using... analysis shows that the anodic coating exhibits the superior corrosion resistance for NZ30K alloy. Key words: Mg-Nd-Zn-Zr alloy; anodizing; corrosion resistance ......
......
