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Diffusion Carbide Layers, Formed on the Surface of Steel in the Vacuum Titanizing Process KASPRZYCKA Ewa1,NAKONIECZNY Aleksander1,BABUL Tomasz1,SENATORSKI Jan1 (1.Institute of Precision Mechanics, Warsaw, Poland) 摘要:Diffusion layers produced on carbon steel surface in vacuum titanizing process were investigated. Studies of layers thickness, their morphology, titanium, carbon and iron......
Dielectric properties of doped silicon carbide powder by thermal diffusion SU Xiao-lei(苏晓磊), LI Zhi-min(李智敏), LUO Fa(罗 发), WANG Xiao-yan(王晓艳), ZHU Dong-mei(朱冬梅), ZHOU Wan-cheng(周万城) State Key... by the thermal diffusion process in nitrogen atmosphere at 2 000 ℃. Graphite film with holes was used as the protective mask. The dielectric properties of the prepared SiC powders at high frequencies......
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couple, the Ti and Zr blocks were diffusionally welded under 4 MPa in argon flow at 1 023 K for 10 min, then cooled to ambient temperature. Subsequently, the Ag-Ti-Zr diffusion triple was assembled from the obtained Ti-Zr couple and the pure Ag block by diffusion welding under 3 MPa at 1 023 K in argon flow for 10 min. Finally, the triple was encapsulated in evacuated quartz tube backfilled with pure......
J. Cent. South Univ. Technol. (2011) 18: 2001-2008 DOI: 10.1007/s11771-011-0934-9 Modified Wiener method in diffusion weighted image denoising YI San-li(易三莉)1, CHEN Zhen-cheng(陈真诚)2, LING Hong-li(林红利..., China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: To denoise the diffusion weighted images (DWIs) featured as multi-boundary, which was very important......
the homogenizing treatment. After that, it was sliced and polished, sealed together with Zn bulk in the vacuum quartz tube. The solid-liquid diffusion couple was annealed at 450 °C for 4-24 h in this study. To prepare the solid-Ni3Si/vapor-Zn diffusion couple, Zn bulks were placed into the bottom of a quartz tube, and the corundum crucible was placed on zinc bulks with a quartz particle layer between......
Microstructure and performance of Al-Si alloy with high Si content by high temperature diffusion treatment XIU Zi-yang (修子扬), CHEN Guo-qin(陈国钦), WANG Xiao-feng(王晓峰), WU Gao-hui(武高辉), LIU Yan-mei... high temperature diffusion treatment (HTDT). Flat Si-Al interfaces transform to smooth curves, and Si phases precipitate in Al and Si-Al interface. The bonding of Si-Al interface is improved by HTDT......
Mn2+/Mn3+电对在不同电极上的电化学性能薛方勤1,王永亮2,张鸿涛1(1.北京市清华大学环境科学与工程系2.蓝星环境工程有限公司,北京 101300)摘 要:采用循环伏安,交流阻抗和旋转圆盘电极方法,研究Mn2+/Mn3+电对在不同的电极材料上的电化学性能.结果表明,Mn3+在石墨电极上岐化反应较少发生,而在炭毡电极上由于存在较多的活性位点而岐化反应的倾向较大,在玻璃炭电极上进行的旋转圆盘电极试验证实了岐化反应的发生.同时确定了在石墨电极上合适的支持电解质硫酸的浓度,计算了Mn2+的扩散系数.
Diffusion bonding of g-TiAl alloy to Ti-6Al-4V alloy under hot pressure WANG Xiu-feng(王秀锋)1, MA Mo(马 蓦)1, LIU Xue-bin(刘学斌)1, WU Xue-qing(吴学庆)1, TAN Chao-gui(檀朝桂)1, SHI Rong-kai(石荣凯)1, LIN Jiang... of Education, Xiangtan University, Xiangtan 411105, China Received 8 December 2005; accepted 20 April 2006 Abstract: The diffusion bonding of g-TiAl alloy to Ti-6Al-4V alloy at different......
