共查询到20条相似文献,搜索用时 15 毫秒
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为实现2020年我国国民经济总产值翻两番、人均GDP达到3000美元的要求,全国电力装机总容量需要从2002年的3.6亿千瓦发展到9.6亿千瓦。由于环境污染和可开发资源等因素的限制,仅仅依靠化石燃料(火电)和水力资源(水电)不可能满足发展的需要,太阳能和风能等可再生能源在短期内又不可能在总电力装机容量中占有较大的份额,因此,核能成为当前唯一现实的可供选择的能源,核电将成为我国能源可持续发展的战略性接替能源。 相似文献
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综述了经济发展和环境保护背景下全球和中国核电的发展需求和规划,强调了核电材料腐蚀防护的重要性。简要概述了核岛设备、常规岛设备与配套子项(BOP)的服役特点和对腐蚀防护的要求。 相似文献
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Austempered Materials for Powertrain Applications 总被引:1,自引:0,他引:1
Justin Lefevre Kathy L. Hayrynen 《Journal of Materials Engineering and Performance》2013,22(7):1914-1922
Austempered irons and steels offer the design engineer alternatives to conventional material/process combinations. Depending on the material and the application, Austempering may provide the following benefits to producers of powertrain components such as gears and shafts: ease of manufacturing, increased bending and/or contact fatigue strength, better wear resistance and enhanced dampening characteristics resulting in lower noise. Austempered materials have been used to improve the performance of powertrain components in numerous applications for a wide range of industries, from gears and shafts to clutch plates and crankshafts. This paper focuses on Austempered solutions for powertrain applications with an emphasis on gear and shaft solutions. 相似文献
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综述了核电结构材料腐蚀疲劳裂纹扩展的研究现状及环境、力学、材料等因素的影响规律,讨论了高温高压水环境中考虑环境效应的疲劳裂纹扩展模型,提出了当前核电结构材料高温高压水腐蚀疲劳裂纹扩展机制及模型研究面临的主要问题及未来可能的研究方向。 相似文献
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防冰涂层材料可有效减轻自然界结冰现象的影响,其通过防冰材料低表面能或高润滑性的特点,降低在低温严寒天气条件下物体表面冰的粘附强度,延迟材料覆冰时间,减少表面覆冰量,在保护电力材料免受冰冻灾害影响方面有着重要应用价值.基于热喷涂法制备的复合型表面防冰涂层材料,以及主被动相结合的防覆冰方法,是未来电力材料防覆冰应用发展的重要方向.然而截止目前,有关复合型表面防冰涂层材料的热喷涂制备,以及涂层在电力材料防冰中应用的研究进展综述鲜见报道.从超疏水材料与光热、电热除冰相结合的除冰方式,及超疏水-超润滑复合材料实现防冰除冰的角度出发,对近年来国内外复合防冰涂层的制备及性能的研究进展进行了综述,并重点讨论了适合于热喷涂制备的复合型涂层的防冰除冰效果.最后,讨论了超疏水防冰涂层、复合型防冰涂层在电力材料表面防覆冰方面应用的研究进展,并对热喷涂法制备防冰涂层在的局限性问题进行了总结,对其应用前景进行了展望,希望在复合型防冰方面进一步开展研究,为电力材料表面防冰涂层的未来发展提供指导. 相似文献
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围绕应力腐蚀行为的实验研究方法、影响因素以及应力腐蚀机制的理论分析等几个方面综述了核电结构材料应力腐蚀研究的现状,讨论了研究中亟待解决的问题,指出了研究的发展方向与趋势。 相似文献
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Jason F. Panzarino Timothy J. Rupert 《JOM Journal of the Minerals, Metals and Materials Society》2014,66(3):417-428
Atomistic simulations have become a powerful tool in materials research due to the extremely fine spatial and temporal resolution provided by such techniques. To understand the fundamental principles that govern material behavior at the atomic scale and directly connect to experimental works, it is necessary to quantify the microstructure of materials simulated with atomistics. Specifically, quantitative tools for identifying crystallites, their crystallographic orientation, and overall sample texture do not currently exist. Here, we develop a post-processing algorithm capable of characterizing such features, while also documenting their evolution during a simulation. In addition, the data is presented in a way that parallels the visualization methods used in traditional experimental techniques. The utility of this algorithm is illustrated by analyzing several types of simulation cells that are commonly found in the atomistic modeling literature but could also be applied to a variety of other atomistic studies that require precise identification and tracking of microstructure. 相似文献
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Keith Robinson Edward F. H. Hall 《JOM Journal of the Minerals, Metals and Materials Society》1987,39(4):14-16
Glow discharge mass spectrometry (GDMS) has been shown to meet the requirements for bulk solids analysis in nuclear systems. It provides elemental analysis on all elements at major, minor and trace concentration levels, and has minimal matrix dependency. 相似文献
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Velikhov E. P. Gagarinskii A. Yu. Ryazantsev E. P. 《Metal Science and Heat Treatment》2003,45(7-8):285-286
Metal Science and Heat Treatment - 相似文献
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