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, Shandong University摘 要:The tensile tests of AZ31 magnesium alloy were carried out under room temperature, 100, 150 and 200 °C with and without pulse current... stress was obtained under different temperatures, and the related results were validated by metallography observation. The results showed that DRX of AZ31 alloy occurred at 200 °C without pulse current......
Effect of direct current and pulse plating on the EDM performance of copper-zirconium diboride compositesDongming Guo, Min Zhang, Zhuji Jin, and Renke Kang Key Laboratory of the Ministry of Education of China for Precision & Non-traditional Machining, Dalian University of Technology, Dalian 116024, China摘 要:Direct current and pulse plating of copper......
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to refinement in grain size and increase microhardness, wear and oxidation resistance [16-19]. Compared with the direct current electro- deposition, pulse electrodeposition can improve cathode activation polarization and decrease concentration polarization, avoiding the shortages of single direction and persistence of direct current by means of utilizing the relaxation of pulse current. Therefore......
the stray current flows in the buried pipeline (such as the gas pipeline, the oil pipeline and the water pipeline), the electrochemical corrosion might occur in the outflow region. There has been evidence...J. Cent. South Univ. (2017) 24: 2596-2604 DOI: https://doi.org/10.1007/s11771-017-3673-8 Stochastic noise identification in a stray current sensor XU Shao-yi(许少毅)1, XING Fang-fang(邢方方)2, LI Wei(李威)1......
University, Yangzhou 225127, China Received 10 August 2011; accepted 28 October 2011 Abstract: Nano-CeO2 (RE) particles were co-deposited into Ni-P binary composite coatings by applying pulse current (PC... exhibit more crystal refinement, denser structure and better mechanical properties. Pulse current (PC) power, bidirectional voltage with pulse current and fast duty cycle, is expected to be of great......
Formation of Dense Inclusion Buildup on Submerged Entry Nozzle by Electric Current PulseWen-Bin Dai1,Xin Yang1,Guang-Peng Tang1,Dan-Bin Jia1,Jing-Kun Yu11. School of Metallurgy, Northeastern University摘 要:In this work, low-density electric current pulse(ECP) has been applied to submerged entry nozzle(SEN) and its effect on the morphology......
size (13.7 nm) and the highest microhardness are obtained at current density of 39.8 A/dm2. The corrosion resistance is obviously increased for the coatings prepared by pulse jet electrodeposition... nanocrystalline pure metal, alloy, as well as composite coatings. Another assisting measure for electrochemical process is pulse plating. Compared with direct current deposition, pulse plating takes some......
Influence of sulfides on the tribological properties of composites produced by pulse electric current sinteringSeung Ho KimDepartment of Electronics Engineering,Dankook University摘 要:pulse electric current sintering(PECS) technique.The coefficient of friction(COF) of the Al2O3-15wt% ZrO2 composite without/with sulfides was in the range of 0.37-0.48......
Effect of rare earth on kinetics of pulse plasma nitriding of pure aluminum and properties of nitrided layerYAN Mu-fu(闫牧夫)(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:Pure aluminum was successfully nitrided in a pulse plasma nitriding facility with rare earth addition. The surface phase structure of the specimen nitrided at 500℃ in N2......