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; 渗透固结; 完整井 中图分类号:TU472 文献标识码:A 文章编号: 1672-7207(2005)04-0689-05 Infiltrating-concretion in vacuum seepage field LI Qing-song1,2, WU Ai-xiang1, HUANG Ji-xian3, XI Yong1, ZHANG Jie1 (1. School...; 3. School of Geoscience and Environmental Engineering, Central South University, Changsha 410083, China) Abstract: The vacuum preloading method was studied. The results show that the essentials......
Preparation of high-purity tantalum ethoxide by vacuum distillation YANG Sheng-hai(杨声海)1, CHEN Yong-ming(陈永明)1, YANG Hai-ping(杨海平)1, LIU Yin-yuan(刘银元)1, TANG Mo-tang(唐谟堂)1, QIU Guan-zhou(邱冠周)2...; Abstract: Effects of reflux ratio, water addition and content of water in ethanol on the purity and yield of tantalum ethoxide during vacuum distillation were......
Properties of TiAlCrN coatings prepared by vacuum cathodic arc ion platingRU Qiang~a HU Shejun~a HUANG Nacan~b ZHAO Lingzhi~b QIU Xiuli~c HU Xianqi~c ~a School of Physics and Communication Engineering,South China Normal University,Guangzhou 510006,China ~b Faculties of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China ~c Shenzhen Goldenhouse Vacuum Technology Co.,Ltd......
文献标识码:A Carbide growth and orientation relationship of vacuum brazing diamond with Ni-Cr alloy LU Jin-bin1, 2, XI Yan-jun1, WANG Zhi-xin1 (1. School..., Nanjing 210016, China) Abstract: In the experiments on vacuum brazing diamond with Ni-Cr alloy at different temperatures, the morphology and growth of carbide that was formed on the diamond......
含量降低到0.22%,Bi的纯度富集到99.78%.另外,Zn含量为1.02%~4.66%的铋熔体经过真空处理,Bi的纯度达到99.7%以上.铋熔体可通过真空方法有效除Zn,金属回收率高,并且对环境无污染,得到的Zn还可返回粗铋加锌提银工段再使用.关键词:真空蒸馏；脱锌；铋熔体Vacuum refining bismuth melts to remove zincXU Yan, QIU Ke...:The thermodynamics of vacuum refining bismuth melts to remove zinc was analyzed and calculated. The effects of temperature, refining time and vacuum degree on vacuum separation efficiency of zinc were also......
been deposited on the substrates of single crystalline Si, pure Ti and stainless steel 18-8 by a method of vacuum cathode arc deposition(VCAD). The composition, microstructure and micro-hardness... roughness of the films. The maximum value of micro-hardness belongs to the DLC films deposited under the hydrogen pressure of 0.35Pa and the negative bias of 100V. Key words:DLC films; vacuum cathode arc......
Preparation and properties of ultra-fine TiCN matrix cermets by vacuum microwave sinteringZHANG Hou’ana,YAN Dikeb,and TANG Siwenb a Institute of Material Preparation and Applied Technology,Xiamen...">Ultra-fine titanium carbonitride(TiCN) matrix materials with a grain size less than 1 μm were successfully prepared by vacuum microwave sintering.The milling process for raw TiCN particles......
Article ID: 1003-6326(2005)02-0447-05 Modeling of velocity field for vacuum induction melting process CHEN Bo(陈 波), JIANG Zhi-guo(江治国), LIU Kui(刘 奎), LI Yi-yi(李依依) (Institute of Metal... metallurgical operations. 2 MODEL AND DERIVATION The vacuum induction melt(VIM) furnace in the practice is schematically shown in Fig.1. The heart of the furnace is the lime crucible (160mm×200mm×260mm......
of high temperature vacuum degassing manage on speciality of minuteness B4C powder YANG Xiao-liang1, 2, LIU Zhi-jian1, ZHOU Ping1, YAN Li-qi1 (1. State Key Laboratory of Powder Metallurgy, Central... that the vacuum degassing treatment can improve the wettability of liquid lithium to B4C pressuring lump. Key words: vacuum degassing; dispersion; wetting 超细粉体(一般指粒径小于10 μm的粉体材料)具有较大的比表面积,在光学,热学,电学......
Effect of sliding velocity in vacuum on tribological behavior of nitrided 2Cr13 steelWANG Gang,MA Xinxin,TANG Guangze,LIU Yong,YANG Dezhuang,and HE Shiyu School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China摘 要:The effects of sliding velocity on the friction and wear of 2Cr13 pin/2Cr13 nitriding disc in vacuum......
