共搜索到5130条信息，每页显示10条信息，共513页。用时：0小时0分0秒405毫秒
High Corrosion-Resistance Double-Layer Ni-P Coating on Steels () 摘要:Double-layer Ni-P alloy coating with a thickness about 20 μm and different Ni-P layers was prepared by electroless deposition... spray tests showed that the double-layer coating exhibits better corrosion resistance. The time of the emergence of the first red rust spot on the coating surface can reach 384 hours, and the gray......
High-temperature oxidation behavior of Nb-Si-based alloy with separate vanadium,tantalum,tungsten and zirconium additionSheng-Nan Zhang,Li-Na Jia,Yue-Ling Guo,Bin Kong,Feng-Xiang Zhang,Hu ZhangSchool... Al-2 Hf alloys with separate vanadium,tantalum,tungsten and zirconium additions were investigated by X-ray diffraction(XRD),electron probe microanalyzer(EPMA) equipped with wave-dispersive......
coating treatment CHEN Yu-gang(陈玉刚), ZHU Qing-yu(朱清玉), ZHAI Jing-yu(翟敬宇) School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China Central South University Press..., the experimental results of the fatigue behavior of compressor blade specimen subjected to resonance and the effects of a damping hard coating on relieving the fatigue progress are presented. The crack......
structure. The outer layers of the coatings have the different phase constituents at different coating temperature, but all the innermost layers of the coatings are constitutive of (Nb, Ti)Al3 and (Cr, Al)2...). Key words: Nb-based ultrahigh temperature alloy; pack cementation; Al-modified silicide coating ......
......
Multilayer ceramic coating for impeding corrosion of sintered NdFeB magnets K. M. Deen1,A. Ahmad2,A. Ali2 (1.Department of Metallurgy and Materials Engineering CEET,University of the Punjab... that makes them susceptible to corrosion in active environments. The cur-rent paper evaluated the anticorrosion characteristics of multilayer titanium nitride ceramic coating applied through cathodic arc......
Studies on Properties and Structure of Electroless Plating Tin Coating XU Rui-dong1,ZHU Xiao-yun1,GUO Zhong-cheng1 (1.The Centre of New Materials and Surface Engineering Research & Development, Kunming University of Science and Technology, Kunming 650093) 摘要:The composition and structure of electroless tin coating were analyzed by SEM and X-ray diffraction. In the meantime, porosity......
......
Microstructure and Behaviors of Nano Composite Coating QIAN Shi-qiang1,LI Pei-yao1,LI Man-ping1,ZHOU Xi-ying1,LI Wei-hong2 (1.Shanghai University of Engineering and Science, Shanghai, China... and microstructure are observed by means of S-2700 scanning electron microscopy (SEM). And the mechanical behaviors of nano composite coating are analyzed. The results show that microstructure of nano......
J. Cent. South Univ. (2012) 19: 1302-1310 DOI: 10.1007/s11771-012-1142-y Lifetime prediction for tantalum capacitors with multiple degradation measures and particle swarm optimization based... and Springer-Verlag Berlin Heidelberg 2012 Abstract: A lifetime prediction method for high-reliability tantalum (Ta) capacitors was proposed, based on multiple degradation measures and grey model (GM......
