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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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thickness of 11.37 μm, is 29.36 GPa. The erosion and salt spray resistance performance of Cr17Ni2 steel substrates can be evidently improved by Ti/TiN/Zr/ZrN multilayer coating. The surface roughness of Cr17Ni2 steel substrates plays an important role in determining the mechanical and erosion performances of Ti/TiN/Zr/ZrN multilayer coatings. Overall, a low value of the surface roughness of substrates......
. 关键词:Cu-Cr-Zr合金；液固两相流；冲蚀磨损性能；变形率 中图分类号:TG 146.1; TG 172 文献标识码:A Erosion wear behavior of Cu-Cr-Zr alloy in liquid-solid two-phase flow LIU Yong1, LONG..., Shanghai Jiao Tong University, Shanghai 200030, China) Abstract: Using MCF-30 erosion wear resistance testing machine, the liquid-solid two-phase flow erosion wear test of Cu-Cr-Zr alloy contact wire......
Experimental studies on the erosion rate of different heat treated carbon steel economiser tubes of power boilers by fly ash particlesT.A.Daniel Sagayaraj,S.Suresh,M.Chandrasekar摘 要:The experimental investigations on the effect of the fly ash particle size,velocity,impingement angle,and feed rate were done with an emphasis on the effect of erosion......
. Influence of operation numbers on arc erosion behavior of Ag/ZnO electrical contact materials[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(5): 1285-1298. DOI: 10.11817/j.ysxb.1004.0609.2021-39771 银...(见图3)对Ag/ZnO(10)电触头材料进行通断试验,此装置可以采集每次通断试验中的电弧能量,电弧时间,熔焊力,温度和接触电阻等参数.表2所列为电弧侵蚀试验条件参数. 表2 电弧侵蚀试验条件参数 Table 2 Parameters of arc erosion test conditions 1.3 分析测试手段 本实验采用电子天平测量电触头质量损失,该天......
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and erosion wear of the composite coating were investigated by thermal shock test,anti-oxidative test,abrasive wear test and erosion wear test. The results show that the coating is dense and has high bonding... oxidation resistance and wear resistance. Compared with the base of pure copper, the oxidation resistance, abrasive wear and erosion wear of the coating are improved by 3.14, 6.16 and 7.48 times......
characteristics of the macro-arc oxidation (MAO) coating on Mg alloy AZ91 were examined by means of nano scratch tester. The corrosion and erosion corrosion behavior of AZ91 with and without MAO coating were investigated by using potentiodynamic electrochemical technique and micro-abrasion tribometer in simulated body fluids, respectively. The influence of HCO3- ions on the erosion corrosion......
The Erosion Effect of Kapton Film in a Ground-based Atomic Oxygen Irradiation Simulator王海斗1,MA Guozheng1,XU Binshi1,XING Zhiguo1,LI Guolu2,ZHANG Sen21. National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering2. School of Materials Science and Engineering, Hebei University of Technology摘 要:In order to investigate the effect......
