共搜索到2196条信息,每页显示10条信息,共220页。用时:0小时0分0秒562毫秒
CP-Ti在含氟离子硝酸中电化学腐蚀行为徐建平1,2,苏航标2,郭荻子2,王晓2,赵永庆2,许并社1,周廉21. 太原理工大学2. 西北有色金属研究院摘 要:采用开路电位(OCP),动电位极化曲线(PPC),电化学阻抗谱(EIS) 3种电化学测试手段对工业纯钛(CP-Ti)在含氟离子硝酸溶液中的电化学腐蚀行为进行研究.结果表明:随着硝酸溶液中氟离子浓度的增加,CP-Ti耐蚀性变差;影响CP-Ti耐蚀性转变的临界氟离子浓度为1. 25 mmol/L;氟离子与CP-Ti表面的氧化膜发生反应,致使均匀,致密的氧化膜溶解转变为多孔膜,降低了CP-Ti的耐蚀性.关键词:工业纯钛;电化学腐蚀;氟离子;硝酸;......
Ultrahigh performance of Ti-based glassy alloy tube sensor for Coriolis mass flowmeter MA Chao-li(马朝利)1, A. INOUE2, ZHANG Tao (张 涛)1 1.School of Materials Science and Engineering, Beijing... that the Coriolis mass flowmeters using the Ti-based glassy alloy sensor tube exhibit excellent measurement sensitivity, viz. 28.5 times higher than that of the conventional flowmeter manufactured using......
Deformation behavior of A6063 tube with initial thickness deviation in free hydraulic bulging YANG Lian-fa(杨连发)1, 2, GUO Cheng (郭 成)1, DENG Yang(邓 洋)2 1. School of Mechanical Engineering... 2006 Abstract: Experiment on seamless tubes of aluminum alloy A6063 with initial thickness deviation of 0–20% was conducted through a free hydraulic bulging with tube ends free. The influence of initial......
channel angular pressing (ECAP) process of commercially pure titanium (CP-Ti) alloys was presented with a major emphasize on the influence of ECAP parameters that include channel and curvature angles... inhomogeneity and mechanical properties are considered to achieve the maximum homogeneity, equilibrium grain refinement and mechanical improvement of CP-Ti. Investigations show that a pressing speed of 1-3 mm/s......
Performance Investigation of Square Concrete-filled Steel Tube Columns陈兵Department of Civil Engineering, Shanghai Jiao Tong University摘 要:The behaviour of square concrete-filled steel tube columns under concentrical loading was studied. More than one hundred specimens were tested to investigate the effects of thickness of steel tube on the load carrying......
tube WANG Zhi-qi(王志奇)1, HE Ni(贺妮)1, XIA Xiao-xia(夏小霞)1, 2, LIU Li-wen(刘力文)1 1. School of Mechanical Engineering, Xiangtan University, Xiangtan 411005, China; 2. School of Energy Science and Engineering... heat transfer and frictional pressure drop of R245fa in a 7 mm horizontal micro-fin tube was performed. The results show that in terms of flow boiling heat transfer characteristics, boiling heat......
J. Cent. South Univ. (2016) 23: 2110-2117 DOI: 10.1007/s11771-016-3267-x Bending behaviour of lightweight aggregate concrete-filled steel tube spatial truss beam FU Zhong-qiu(傅中秋)1, JI Bo-hai(吉伯海)1..., Japan Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: A lightweight aggregate concrete-filled steel tube (LACFST) spatial truss beam was tested under bending load......
Elasto-plastic finite element analysis of squaring circular tube HUANG Yuung-ming(黄永明) Department of Mechanical and Computer-Aided Engineering, St. John’s University, Taipei 25135, China... deformation theory was established, and Lagrangian formulation for simulating the squaring process of circular tube was updated. Incremental Coulomb’s friction law was used in the global stiffness matrix......
Undercooling and rapid solidification of Nb-Si eutectic alloys studied by long drop tube WANG Yu-ren(王育人), DONG Shu-yong(董树勇), WEI Bing-chen(魏炳忱), LI Wei-huo(李维火) National Microgravity Laboratory... turbine applications. The two-phase Nb/Nb5Si3 in situ composites exhibit a good balance in mechanical properties. Using the 52 m drop tube, the effect of undercooling and rapid solidification......
Low cyclic fatigue performance of concrete-filled steel tube columnsQIN Peng(秦鹏), TAN Yang(谭杨), XIAO Yan(肖岩)(College of Civil Engineering, Hunan University, Changsha 410082,China)Abstract:Eight... of steel tube in compression zone, and low cycle fatigue tearing rupture failure of steel tube. The seismic behavior was evaluated through the energy index obtained from each cycle.Key words:concrete......