真空电弧镀膜中金属液滴的热过程研究

本文建立了真空电弧镀膜中液滴热过程的理论模型，求解了沉积ＴｉＮ膜过程中液滴的温度与粒径变化。计算表明，液滴在飞行过程中温度和粒径不断减小；粒径较小的液滴温度降低较大，甚至可能发生凝固。计算实例能较好解释早期ＴｉＮ膜的电镜分析结果，揭示液滴在薄膜中引起两种不同微孔的机理。     

Böhler Edelstahl

Böhler Edelstahl produces high performance tool and high speed steels via an optimised powder metallurgy/hot isostatic pressing route, as part of a high value special alloys portfolio.     

Brφnsted酸-离子液体体系中酸强度的UV-Vis测定

采用UV-Vis对溶有Brφnsted酸的对水稳定的离子液体的酸强度进行了测定并结合Hammett函数,获得了令人满意的结果。     

Development and test in grid of 630 kVA three-phase high temperature superconducting transformer

Abstract A 630-kVA 10.5 kV/0.4 kV three-phase high temperature superconducting (HTS) power transformer was successfully developed and tested in a live grid. The windings were wound by hermetic stainless steel-reinforced multi-filamentary Bi2223/Ag tapes. The structures of primary windings are solenoid with insulation and cooling path among layers, and those of secondary windings consist of double-pancakes connected in parallel. Toroidal cryostat is made from electrical insulating glass fiber reinforced plastics (GFRP) materials with room temperature bore for commercial amorphous alloy core with five limbs. Windings are laid in the toroidal cryostat so that the amorphous core operates at room temperature. An insulation technology of double-half wrapping up the Bi2223/Ag tape with Kapton film is used by a winding machine developed by the authors. Fundamental characteristics of the transformer are obtained by standard short-circuit and no-load tests, and it is shown that the transformer meets operating requirements in a live grid. __________ Translated from Proceedings of the CSEE, 2007, 27(27): 24–31 [译自:中国电机工程学报]     

碱性印制电路板废液生产碱式碳酸铜的研究

碱式碳酸铜用途广泛,文章通过研究利用碱性电路板蚀刻废液生产碱式碳酸铜,得到了制备该产品的最佳工艺条件。生产出来的产品质量达到国内同类产品要求。     

TFT-LCD屏缺陷检测的研究

分析了国外目前常用几种薄膜晶体管(TFT)有源矩阵液晶显示（AM-LCD)屏的缺陷检测方法的优缺点。深入研究了TFT-LCD屏的结构、缺陷产生的原因和概率．设计了一种能全面、直观地进行TFT-LCD缺陷检测的方法，该方法不仅能检测出TFT-LCD中各种常见的新短路等硬性缺陷并确定其具体位置．而且能根据TFT-LCD屏质量要求对软性缺陷进行判定。     

天然气转化利用技术的研究进展

主要评述了自1995年以来,全球天然气转化利用商业化技术的重大进展,包括合成气生产、天然气制合成油、含氧化合物生产(主要是甲醇和二甲醚)、甲醇制烯烃。综述了甲烷脱氢芳构化反应制苯、部分氧化制甲醇、氧化偶联制乙烯的研究进展,并对发展我国天然气化工提出建议。     

催化氯化法合成氯化石蜡-52的研究

简要介绍了催化氯化反应机理,并以液体石蜡和氯气为原料,选用内设盘管冷却玻璃塔式氯化反应器,在高活性催化剂作用下,催化氯化反应合成了氯化石蜡-52产品。考察了氯化反应器、预热温度、氯气流速、反应温度及反应时间对氯气转化率的影响。结果表明,在预热温度50-55℃、氯气流速500—700mL／min、反应温度90～100℃及反应时间90—110min条件下,氯气转化率达95％-97％。将催化氯化法与热氯化法进行技术经济比较,结果表明,催化氯化法反应时间比热氯化法大大缩短,原料消耗和能耗都低于热氯化法,投资成本和生产成本分别是热氯化法的70％和75％左右。     

Compositional, structural, optical and electrical characterization of CulnTe2 grown by the tellurization of stoichiometric Cu and in in the liquid phase

A new method to grow single crystals with stoichiometry close to 1:1:2 of CuInTe₂, an important member of the Cu-III-VI₂ family of semiconductors is described. This consists of tellurization in the liquid phase of stoichiometric Cu and In and later solidification under directional freezing. It is found from energy dispersive spectroscopy that the ingots obtained with the evaporation temperature (T_t) of Te at 590 and 635°C were very close to the ideal stoichiometry 1:1:2. Samples of all ingots obtained with T_t between 530 and 690°C, as studied by x-ray and differential thermal analysis, were of single phase having chalcopyrite structure and p-type conductivity. Optical and electrical characterization of different ingots were made. The acceptor ionization energy E_A and the density of states effective mass m _p ^* of the holes are estimated from the temperature dependence of the hole concentration p in samples of different ingots. m _p ^* = (0.78 ± 0.02) m_e agrees quite well with the reported value. From a combined analysis of the variation of E_A with p^1/3 and the knowledge of molecularity and valence stoichiometry of each sample, it is established that the shallow acceptor level observed in different samples with E_A (0) ⋍ 30 meV is due to V_In.