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. The Ti-coated diamond/Al composites were fabricated by gas pressure infiltration with a 60% volume fraction of diamond. The phase composition of diamond after coating titanium and the thermal conductivity...-coated diamond/Al composites; coating thickness; thermal conductivity; interface heat transfer coefficient; gas pressure infiltration......
and the reactions of metallic aluminum with CO [12]. The pressure determined at the exit of the vacuum furnace was maintained at 5-200 Pa in the experimental process [12]. Additionally, the off gases..., at temperatures below 1250 K and CO partial pressures below 1000 Pa. Fig. 6 Equilibrium diagram of metallic aluminum-CO system The pressure at the exit of the vacuum furnace was maintained at 5-200 Pa......
Effect of partial pressure of reactive gas on chromium nitride and chromium oxide deposited by arc ion plating LI Ming-sheng(李明升)1, 2, FENG Chang-jie(冯长杰)2, WANG Fu-hui(王福会)2 1. Jiangxi Key... Academy of Sciences, Shenyang 110016, China Received 10 April 2006; accepted 25 April 2006 Abstract: The effects of reactive gas partial pressure on droplet formation, deposition rate and change......
front and remelting front decreases, which leads to the decrease of regional extent. The infiltration front moving velocity is mainly influenced by the centrifugal infiltration pressure, whereas...-pressure centrifugal infiltration process. Infiltration phenomena of molten metal through porous preform in a centrifugal force field were analyzed by NISHIDA et al [14-15], but in NISHIDA’s paper......
to remove impurities from crude lead by vacuum distillation. The thermodynamics on vacuum distillation refining process of crude lead was studied by means of saturated vapor pressure of main..., Sn, Ag, Zn, As and Sb from crude lead. 2 Relationship between saturated vapor pressure of main components and temperature The impurity components can be removed from crude lead by vacuum distillation......
K P, de JONGH P E. LiBH4/SBA-15 nanocomposites prepared by melt infiltration under hydrogen pressure: Synthesis and hydrogen sorption properties [J]. The Journal of Physical Chemistry C, 2010, 114(13... was confined into activated charcoal (AC) by melt infiltration method (MI), and its effects on the hydrogen sorption properties were investigated. The N2 adsorption results reveal that melt infiltration method......
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. 4 Sketch figure of extrusion and infiltration between dendrites during vacuum counter-pressure casting molten metal 2.2 壁厚对铝合金二次枝晶间距的影响 在同一结晶压力下,不同壁厚时差压铸造ZL114A合金的真空二次枝晶间距随壁厚的变化曲线如图5所示. 从图...造；结晶压力；二次枝晶间距；壁厚 中图分类号:TG249.2 文献标志码:A Effect of crystallization pressure on secondary dendrite arm spacing of vacuum counter-pressure casting aluminum alloy YAN Qing-song......
℃. Then the distillation temperature was raised to 150 ℃, and a little amount of ester was removed. According to tantalum ethoxide temperature-vapor pressure curve and the maximum vacuum of distillation tower or vacuum pump, vacuum distillation of 200 mL crude tantalum ethoxide solution was conducted at pressure of 1 kPa and oil bath temperature of 210-230 ℃. The outlet temperature and tail gas outlet......
. The Green-Ampt model of unsaturated infiltration under the influence of soil air pressure[J]. Journal of Hydraulic Engineering. 2005, 6(6): 733-736. [22] 马娟娟. 蓄水坑灌条件下土壤水分运动特性的试验研究[D]. 西安: 西安理工大学, 2005: 42-54...型稀土矿采用室内柱浸试验,研究不同入渗水头下入渗率的变化规律. 1 模型建立 图1 Green-Ampt入渗模型 Fig. 1 Green-Ampt infiltration model Green-Ampt模型假设土壤初始含水率分布均匀,入渗过程为积水入渗,整个入渗过程存在明显的湿润峰,湿润峰面水平,湿润峰处吸力固定不变[20].如图1所示,把z坐标原点设在......
