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钢铁仍将是21世纪中国结构材料的支柱 总被引:7,自引:0,他引:7
从矿产资源、能源消耗、生产成本、生产规模、市场需求及发展潜力、环境协调性、加工及使用性能、社会效益等几个方面,分析了钢铁与其他结构材料如有色金属、塑料、陶瓷及复合材料相比的优势,指出钢铁仍将是中国21世纪结构材料的支柱。 相似文献
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本文从材料技术领域发生的巨大变化和对人类产生的巨大影响入手,介绍了当代材料技术的现状,发展趋势和我国材料技术发展概况及前景。 相似文献
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本文简要叙述了高温超导材料发展概况及其在强电技术方面的应用;介绍了几类稀土坑温超导材料的结构及样品的制备工艺,重点叙述的YBCO稀土涂层带材是一种性能良好、应用前景良好的新型高温超导材料。文章还介绍了我国稀土高温超导材料的应用。最后分析了稀土高温超导材料的应用市场前景。 相似文献
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本文综合性地介绍了在现代通讯工业中使用的金属功能材料,其中包括半导体元件材料、稀土永磁材料、软磁材料、弹性合金及形状记忆合金。同时对这 些合金近年来的发展也作了简单叙述。 相似文献
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《粉末冶金材料科学与工程》2010,15(3):F0004-F0004
安泰科技股份有限公司是由钢铁研究总院在国家科技休。制改革过程中于1998年发起成立的股份公司,2000年5月在深圳上市。公司以高新技术材料及制品开发、生产、销售为。精业务,分为超硬和难熔材料及其制品、金属功能材料及制品、特种金属材料及制品、生物医用材料及制品、 相似文献
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利用极化曲线测试法分析了不同碳材料和不同方法制备的铂碳复合电极的塔菲尔常数。不同碳材料制备的铂碳复合电极塔菲尔常数值呈现出一定的差别,并且按碳材料的一定排列次序,铂碳复合电极的塔菲尔常数a值和b值都呈现出了规律性的递减,其中a值递减相对较大;另外,不同方法制备的铂碳复合电极塔菲尔常数也呈现出了较大的差别,其中离子溅射法制备的铂碳复合电极塔菲尔常数值明显低于吸附还原法和电镀法制备的铂碳复合电极。同时 相似文献
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半金属制动材料的研制 总被引:5,自引:0,他引:5
半金属制动材料是由增强纤维、增塑剂、摩擦组元、润滑组元和树脂组成的。通过材料配方筛选、工艺试验、D -MS定速试验机试验及台架试验 ,研制成功的SMM - 94半金属制动材料的性能指标达到了2 0 0km/h高速列车制动系统所指出的要求 (磨擦表面温度低于 5 0 0℃的情况下 ,磨擦系数 0 .35± 0 .0 4,磨擦曲线满足了线性要求 ,磨擦表面没有裂纹材料也没有掉块 ,磨损率达到了国际铁路联盟标准UIC5 14- 4) ,而且材料中不含石棉、铅等对大气或水源可能造成污染的成分 ,是新一代的环保制动材料 相似文献
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FIONA M. DOYLE 《Mineral Processing and Extractive Metallurgy Review》2013,34(1):481-521
Abstract Hydrometallurgical processing routes show outstanding potential for synthesizing a wide range of advanced ceramic and metallic materials, in which the composition, purity and structure are closely controlled to produce- materials with the properties needed for specific applications. The characteristics of "advanced materials'* are first discussed in general terms. Those classes of materials most likely to be amenable to hydrometallurgical processing are then considered, and the economic, technical and environmental benefits that might be derived from adopting hydrometallurgical processing routes are discussed. The thermodynamic, surface chemical, kinetic, and transport principles that could be used to control the materials characteristics are then reviewed. Finally, selected examples of aqueous processing techniques for preparing both oxide ceramics and metallic materials, as powders, films or coatings, are provided. 相似文献
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材料研究和发展的瞻望 总被引:6,自引:0,他引:6
徐祖耀 《有色金属材料与工程》1999,20(2):49-50
简介材料研究和应用的原则和趋势。指出,特殊性能水泥、“超级钢”、形状记忆材料、生物材料、高阻尼材料、纳米材料和薄膜材料将是下世纪材料发展的热点 相似文献
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洪坚 《有色金属材料与工程》1998,19(1):23-28
本文介绍了一种眼镜架用新型Ni-Cr合金,并对它的制造方法、成分配制、机械性能、抗腐蚀性能和抗高温软化性能进行了系列研究和实验。结果表明:该合金的主要性能指标均优于国内常用的眼镜框架材料。经镜架工厂试用后认为该材料适合于制作各类高档眼镜架。 相似文献
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黄世民 《有色金属材料与工程》1993,(1)
铝锂合金为近年来崛起的飞机新型结构材料,它以低弹性模量著称。近年来,欧美各国已研制出一批铝锂合金,并已进入实用阶段,预计在不久的将来,铝锂合金将取代现用的铝合金和一部分钛合金,而成为飞机结构的主要材料。 相似文献
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Kevin K. Tseng 《Canadian Metallurgical Quarterly》2004,130(5):547-550
Many materials exhibit elasto–visco–plastic behavior when subjected to loadings with certain strain rate. Examples include natural materials such as metals, clays, and soils and manmade materials such as some biomimic materials. Some voids may exist or be introduced in these materials. The effects of the voids on the material response are important in predicting the strength, reliability, and service life of structural systems containing these materials. This paper presents the results of applying a statistical micromechanical approach to describe the macroscopic behavior of elasto–visco–plastic materials containing many randomly dispersed spherical voids. Most existing micromechanics based models are only applicable to monotonic proportional loadings. The limitation is removed by integrating the material model into the framework of continuum plasticity. With the discrete integration algorithm and local return mapping algorithm, the proposed computation method is applicable to any loading and unloading histories and is ready for implementing into finite element analysis. 相似文献
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A variety of products made from lunar resources will be required for a lunar outpost. These products might be made by adapting existing processing techniques to the lunar environment, or by developing new techniques unique to the moon. In either case, processing techniques used on the moon will have to have a firm basis in basic principles of materials science and engineering, which can be used to understand the relationships between composition, processing, and properties of lunar‐derived materials. These principles can also be used to optimize the properties of a product, once a more detailed knowledge of the lunar regolith is obtained. Using three types of ceramics (monolithic glasses, glass fibers, and glass‐ceramics) produced from lunar simulants, we show that the application of materials science and engineering principles is useful in understanding and optimizing the mechanical properties of ceramics on the moon. We also demonstrate that changes in composition and/or processing can have a significant effect on the strength of these materials. 相似文献