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J. Cent. South Univ. (2019) 26: 623-631 DOI: https://doi.org/10.1007/s11771-019-4033-7 Stress relaxation behavior and life prediction of gasket materials used in proton exchange membrane fuel cells... gaskets are employed to keep fuel gases and oxidation in their own zones. Due to the viscosity and elasticity, the assembly force could relax when the silicone rubber is compressed in a proton exchange......
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. The experiment results show that high density of oxygen precipitates is observed in heavily Sb-doped wafer. It is found that the oxygen precipitates in heavily Sb-doped silicon are enhanced at high cooling rate...Effect of Rapid Thermal Process on Oxygen Precipitates in Heavily Sb-Doped Silicon Wafer Xu Yuesheng1,Hao Qiuyan1,Teng Xiaoyun1,Liu Caichi1,Zhao Liwei1,Sun Shilong1 (1.Institute of Information......
and multimodal WC-12Co cermet coatings were deposited by high velocity oxy-fuel (HVOF). The microhardness and microstructure of the coatings were compared, and the resistance of the coatings... coating is enhanced by above 150% in comparison with the conventional coating. Key words: cavitation erosion; WC-12Co coating; high velocity oxy-fuel; multimodal 1 Introduction Cavitation erosion is one......
) coherent jet in which the main oxygen jet is surrounded by a supersonic fuel gas. The characteristics of the proposed coherent jet are analyzed using experimental methods and numerical simulations... of the supersonic shrouding methane gas was 2930 K, slightly below the theoretical combustion temperature of methane–oxygen gas. The high speed and temperature of the supersonic flame effectively......
Simulation of high velocity compaction of powder in a two dimension mould using lattice Boltzmann methodQiaojie LI 1), Zhoushun ZHENG 1) and Xuanhui QU 2) 1) School of Mathematical Science...="ChDivSummary" name="ChDivSummary">This work presents a numerical study on the dynamic high velocity compaction of the metal powder. The analysis of the process is based on a mesoscopic approach using multi......
. The magnetic pressure was then used as boundary conditions to model the high velocity deformation of various length tube with ANSYS/LSDYNA. The time space distribution of magnetic pressure on various length tubes was presented. Effect of tube size on the distribution of radial magnetic pressure and axial magnetic pressure and high velocity deformation were discussed. According to the radial magnetic......
with high contents of Pb, Zn, Ag, etc by oxygen pressure acid leaching was studied. It is unusual that tetrahedrite, whose treatment was rarely studied, is the primary copper mineral of the concentrates... is low. High temperature process (200-230 °C) has rapid leaching kinetics, in which the entire sulfides are transformed into sulfate, leading to higher oxygen consumption and higher acidity......
anodes thermally prepared on titanium substrates have received much attention as the most dominant catalyst for oxygen evolution in electrolysis industrial. This is because IrO2-Ta2O5 coating exhibits high...%. Then the current increases quickly and reaches the maximum at the content of 70% IrO2. At the content of 100% IrO2, the current of oxygen evolution is high. Nevertheless, the adhesion and rigidity......
Analysis of density and mechanical properties of high velocity compacted iron powderJianzhong WANG,Haiqing YIN and Xuanhui QU State Key Laboratory for Advanced Metals and Materials,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China摘 要:A new method for producing higher density PM parts,high......