中国凹版艺术的渊源与发展

阐述了凹版艺术的起源和凹版艺术的主要代表人物凯绥·珂勒惠支及其代表作,回顾了中国凹版版画的产生、发展和崛起,介绍了国内优秀凹版艺术家陈晓南、曹剑峰、王维新等人的代表作以及国内金属腐蚀版画和塑料版画的新成就。     

水基润滑液在不锈钢器皿拉深中的应用

水基润滑液与铜基合金模具相匹配,在用于不锈钢器皿的拉深中,能有效地克服不锈钢器皿拉深时极易产生的划痕、划伤、拉破等弊端;同时,明显提高不锈钢器皿的拉深质量.与传统使用的猪油、香油、豆油、菜籽油以及二硫化钼、氯化石腊相比,水基润滑液具有价格低廉、润滑性能好、去污能力强、易于清洗和抛光、劳动务件好等优点.     

酸性镀铜溶液中铜离子的准确与快速测定

用差式光度法测定酸性镀铜溶液中铜离子的含量其参比溶液和标准溶液均为酸性镀铜溶液,标定方法为改进后的配位滴定法。     

熔池炼铜炉渣成分控制的数学模拟

本文根据白银炼铜法的生产实践,提出了炼铜炉渣Fe/SiO_2与(SiO_2+CaO)/Fe计算控制的方法和数学模型,给出了计算机程序运行框图和模拟计算控制的结果。     

电沉积颗粒/Cu-Sn复合材料的摩擦磨损特性研究

采用电沉积法制备了不同颗粒（Ａｌ２Ｏ３、ＣａＦ２、滑石（Ｔａｌｃ））增强铜合金（Ｃｕ－Ｓｎ）复 合材料,并用扫描电子显微镜观察了颗粒的分布及复合材料镀层的表面形貌,研究了颗粒性 质和含量对复合材料硬度、摩擦系数和耐磨性能的影响。详细研究了Ａｌ２Ｏ３／Ｃｕ－Ｓｎ复合材 料的磨损特性,并探讨了外加载荷和滑动速度对Ａｌ2Ｏ３／Ｃｕ－Ｓｎ夏合材料磨损率的影响。     

Some Thermal Properties of a Copper–Tin Alloy

The thermal properties (heat capacity, thermal diffusivity, and electrical resistivity) of a Cu + 10 wt% Sn alloy in both solid and liquid phases have been reported. Using these values it was confirmed that the Lorenz relation is suitable for obtaining thermal conductivity from electrical resistivity in the liquid phase of this alloy. Also, the temperature differential (d/dT) obtained from such an approach was in excellent agreement with the thermal conductivity values calculated from thermal diffusivity.     

方坯高效连铸技术的进展

综述了高效连铸技术的发展状况,以技术集成的观点系统地论述了高效连铸技术。     

Survey on some contaminants in white sugar from Serbian sugar beet refineries

Refined white sugar is a very pure food product, even though it contains very small amounts of soluble and insoluble impurities. The content of these impurities has nutritional significance and determines the usefulness of sugar for various industrial applications. The main quality criteria used to indicate the content of these impurities are ash and colour. The aim of this paper was to evaluate the quality according to the EU sugar market regime and the content of iron, copper and zinc in white sugar samples from Serbian sugar beet refineries during the 2003 campaign. A total of 166 samples representative of the production of four Serbian sugar refineries were investigated. After wet digestion the concentrations of iron, copper and zinc were determined by flame atomic absorption spectrometry. The mean content of iron, copper and zinc in sugar samples was 0.37 mg/kg, 0.06 mg/kg and 0.02 mg/kg and was significantly different from the average content 0.28 mg/kg, 0.09 mg/kg and 0.07 mg/kg respectively in the analysed European sugar factories. The data were also compared with literature values for commercial white sugar samples from European sugar beet refineries and European legislation set for copper and zinc. Furthermore, the quality of produced sugar was evaluated according to the standards of the European Union indicating that 76% of all investigated Serbian samples belonged to the second sugar quality category.     

铬锰硅合金代替铜生产汽缸体

在铁水包中加入廉价的铬锰硅合金代替贵重金属铜生产汽缸体，取得显著的经济效益。     

MEMS Inductor Consisting of Suspended Thick Crystalline Silicon Spiral with Copper Surface Coating

报道了一种由悬浮在玻璃衬底上的表面镀铜平面单晶硅螺线构成的新型MEMS电感,可消除衬底损耗及减小电阻损耗.采用一种硅玻璃键合-深刻蚀成型释放工艺并结合无电镀技术制作该电感,形成厚约40μm的硅螺线,在硅螺线表面镀有高保形厚铜镀层,在铜镀层表面镀有起钝化保护作用的薄镍镀层.该电感的自谐振频率超过15GHz,在11.3GHz下,品质因子达到约40,电感值超过5nH.基于该电感的简化等效电路模型,采用一种特征函数法进行了参数提取,模拟结果与测量结果符合得很好.