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Contact Resistance and Arc Erosion of Tungsten-copper Contacts in Direct Currents马窦琴1,2,XIE Jingpei1,2,LI Jiwen1,WANG Aiqin1,WANG Wenyan1,21. School of Materials Science and Engineering, Henan University of Science and Technology摘 要:The arc erosion under medium direct currents in the argon flow was tested on tungsten-copper(W-Cu) contacts which were......
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Experiment and finite element method analysis mass erosion and transfer of Ag/La2NiO4-based electrical contacts during operationSong Chen1,2,Wei-Ming Guan1,2,Kun-Hua Zhang1,2,Zhi-Long Tan1,2,Ming... obtained. The condition of material erosion and mass transfer can be forecasted by those calculation results. It is beneficial to research about the lifetime of Ag/La2 NiO4 electrical material.关键词:......
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with this theory, the cavitation catalysis removal mechanism of ultrasonic-pulse electrochemical compound machining (UPECM) based on particles was proposed. The removal mechanism was a particular focus... indicate that the processing speed, machining accuracy and surface quality can be improved under UPECM compound machining.Key words:ultrasonic; pulse electrochemical machining (PECM); cavitation catalysis......
for blast furnace A. However, the variation trend of them for furnace B was the same. The floating state of deadman and hearth bottom temperature and erosion were calculated by deadman mechanical model based on four domestic blast furnaces. It is found that the floating heights of deadman will influence the relationship between hearth and bottom temperature and then affect the erosion profile of hearth......
): 206-209. [3] STELLA J, GERKE L, POHL M. Study of cavitation erosion and adhesive wear in CuSnNi alloys produced by different casting processes[J]. Wear, 2013, 303(1/2): 541-545. [4] LAGUNA-CAMACHO J R, LEWIS R, VITE-TORRES M, et al. A study of cavitation erosion on engineering materials[J]. Wear, 2013, 301(1/2): 467-476. [5] NEVILLE A, MCDOUGALL B A B. Erosion-and cavitation- corrosion of titanium......
simulation of bionic method for improving property of elbow erosion resistance JI Chuling, LI Changjun, MA Shufeng, CHEN Lei (School of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, China) Abstract: The physical models of bionic surface thickened elbow were established according to the erosion resistance surfaces of desert scorpion and lizard. Mathematic model was also set up......
空蚀过程中电化学电位变化规律研究 杨德钧1,俞宏英1,黄锦滨1,张秀丽1,孙冬柏1 (1.北京科技大学腐蚀与防护中心 冶金局腐蚀,磨蚀与表面技术开放研究实验室 北京 100083) 摘要:由电火花放电装置产生空泡,采用电化学技术检测了空泡溃灭作用于金属表面引起的电极电位变化．研究表明若保持电火花放电装置每次放电的参数不变,而且金属电极总面积远远大于空泡作用区的面积,则金属的电极电位与电极面积的对数成线性正比关系．这表明,在空蚀过程中,金属表面存在着空蚀区与非空蚀区的电偶作用． 关键词:空蚀电化学电偶作用; cavitation damage; electrochemistry; galvanic effect; [全文内容正在添加中] ......
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