共搜索到22987条信息,每页显示10条信息,共2299页。用时:0小时0分0秒312毫秒
......
......
of X80 pipeline steel were measured using the electro-chemical permeation technique. Using ABAQUS software, hydrogen diffusion in X80 pipeline steel welded joint was studied in consideration...Simulation of hydrogen diffusion in welded joint of X80 pipeline steelYAN Chun-yan(严春妍)1, LIU Cui-ying(刘翠英)2, ZHANG Gen-yuan(张根元)1(1. College of Mechanical and Electrical Engineering, Hohai......
......
effect dueto the inhomogeneous distribution of nanometer scale sp2 clusters and the reductionof the surface emission barrier due to the hydrogen termination. Key words:field emission; amorphous carbon...THE IMPROVEMENT OF ELECTRON FIELD EMISSION FROM AMORPHOUS CARBON FILMS DUE TO HYDROGEN PLASMA CHEMICAL ANNEALING EFFECT J.B.Xu1,J.Xu1,W.Li1,K.J.Chen1,L.Wang1,X.H.Huang1 (1.National Laboratory......
Wavelet analysis of acoustic emission signals from thermal barrier coatings YANG Li(杨 丽), ZHOU Yi-chun(周益春) Key Laboratory for Advanced Materials and Rheological Properties of Ministry... to the analysis of acoustic emission signals collected during tensile test of the ZrO2-8% Y2O3 (YSZ) thermal barrier coatings (TBCs). The acoustic emission signals are de-noised using the Daubechies discrete......
......
Fabrication of Barrier Ribs for PDP by Capillary Infiltration Process and Their Sintering Behavior Yong Seog Kim1,Chan Hyoung Kang2,Hak Nynu Choi1,Tae Jung Tang1 (1.Department of Materials Science and Engineering,Hongik University,Seoul 121-791,Korea;2.Department of Advanced Materials Engineering,Korea Polytechnic University Shihung-City,Kyonggi-Do,Korea) Abstract:Closed-cell type barrier ribs......
of Petrochemical Technology, Beijing 102617, China Received 15 July 2007; accepted 10 September 2007 Abstract: The NiCrAlY+ZrO2 thermal barrier coating was prepared on the surface of TiAl alloy by plasma... sprayed samples at 850℃ was investigated. The results show that the bonding between thermal barrier coating and substrate is very good. Surface hardness of TiAl alloy is improved too. The microhardness......
Numerical investigation into effect of rear barrier pillar onstress distribution around a longwall faceJU Ming-he(鞠明和)1, 2, LI Xue-hua(李学华)1, 2, YAO Qiang-ling(姚强岭)1, 2, LI Dong-wei(李冬伟)1, 2, CHONG...), Xuzhou 221008, China)Abstract:Numerical investigation was performed to examine the effect of rear barrier pillar on stress distribution around a longwall face. Salamon theoretical formula was used......