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主要论述了镁合金加工技术的发展水平与趋势:以及镁合金的开发应用领域和前景.我国的镁资源非常丰富,镁锭生产量居世界前列,但镁合金及其材料的研制开发工作仍然较落后,只有加大开发力度,拓展镁材的应用市场,才能发挥镁生产大国的作用. 相似文献
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我国镁合金应用领域开发前景分析 总被引:2,自引:0,他引:2
张运法 《中国新技术新产品》2010,(9):106-106
我国是镁的资源大国,但镁合金应用领域的开拓严重滞后,但随着我国加入WTO后国内、国际两个市场日益增长的需求以及国家西部大开发战略的实施,镁工业面临着重大的发展机遇。文章对我国镁工业生产状况及镁合金的应用前景做了简单介绍,仅供参考。 相似文献
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镁产业发展瓶颈与汽车应用需求牵引的重要作用 总被引:1,自引:0,他引:1
<正>镁作为工程金属,它的开发、应用远不如钢铁、铜、铝等金属成熟。可是,在众多传统金属矿产资源趋于枯竭、节能和环保观念受到高度重视的今天,加速镁的开发和应用已经成为人 相似文献
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我国不仅是煤炭资源大国,同时也是煤层气资源大国,但现阶段,我国的煤层气开发受到一些因素的制约。本文结合笔者工作实际,浅谈影响我国煤层气开发的一些因素及其应对措施。 相似文献
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人类文明的发展和社会的进步与金属材料关系十分密切,种类繁多的金属材料已成为人类社会发展的重要物质基础。目前,我国已是"有色金属材料大国"、"钢铁大国"等金属材料大国,但还不是强国,例如,我国铝的产能产量居世界第一,但由于"跟踪"国外的发展状态没有得到本质改变,在国际上无定价权,仍处于被动的境地;我国同样是第一产镁大国,但由于镁材的应用没有得到突破,镁工业还处于发展中;作为钛工业大国,我国的钛需求前景非常好,但目前在批量、稳定地生产合格高质量钛锭方面还存在着一定的困难,需要工程化研究支持,需要加强创新性研究,同时也需要加强人才培养。因此,如何突破各金属材料领域的瓶颈问题,是我国金属材料实现跨越式发展、我国由金属材料大国转变为金属材料强国所亟待解决的问题之一。在当前要求节能减排的时代,金属材料发展面临的挑战更加严峻。在实现节能减排之后,如何正确衡量、评价节能减排也是一个非常重要的问题。目前,国内研究者已经将生命周期评价方法应用于铝、镁等金属材料的评价,这样,既利于金属材料参与国际分工与合作、直面与其他材料的竞争,而且也是金属材料行业实施节能减排、应对全球气候变化等可持续发展战略的必要措施。 相似文献
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<正>镁合金具有较高的强度、比刚度,是当前常见工程材料中质量最轻的金属材料,同时,镁合金还有比铝、钛合金更加优良的减震性能。同时,镁合金在耐凹陷性、铸造成型性等方面也表现出优良的性能,加上容易回收利用、抗电磁干扰性能优越等特点,在冶金、汽车、航天等领域中得到了越来越广泛的应用。我国的镁资源非常丰富,然而在镁合金及其材料的研制、开发和应用上依然较为滞后,只有加大开发力度,不断拓展镁材的应用市场,才能真正发挥出镁生产大国的作用。 相似文献
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航空航天、信息通信等领域不断发展,随之产生的电磁干扰也逐渐被人们重视,面对电磁屏蔽材料兼顾结构轻量化的功能/结构一体化发展趋势,已经有越来越多的研究者将关注点放在了镁合金及其复合材料上。镁合金作为一种密度极低的金属材料,具有较高的比强度和比刚度、优异的阻尼和电磁屏蔽性能,以镁合金为基体制备复合材料可进一步提升材料的综合性能,兼具高导电性、导热性和优异力学性能的碳纳米管(CNTs)、纳米石墨烯(GNPs)等纳米碳基材料和具有特殊空心结构的粉煤灰球(FACs)均可作为镁合金复合材料的增强体,综合提升材料的力学和电磁屏蔽性能。目前,针对镁合金及其复合材料的电磁屏蔽性能研究主要集中于合金化元素选择及成分设计、热处理及加工工艺、晶粒尺寸、织构及相分布、复合材料体系设计等方面。从电磁屏蔽原理出发,综述了近年来镁合金及其复合材料电磁屏蔽性能的研究,主要对镁合金及其复合材料导电、导磁性的影响因素进行了介绍,并讨论了作为复合材料提升镁合金电磁屏蔽性能的机理,最后针对这类轻量化电磁屏蔽结构材料的应用前景进行了展望。 相似文献
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X.J. Wang D.K. Xu R.Z. Wu X.B. Chen Q.M. Peng L. Jin Y.C. Xin Z.Q. Zhang Y. Liu X.H. Chen G. Chen K.K. Deng H.Y. Wang 《材料科学技术学报》2018,34(2):245-247
China has been developed into one of the most active regions in terms of both fundamental and applied research on magnesium (Mg) and its alloys in the world from a solid base laid by its prominent metallurgist and materials scientists over the past decades. Nowadays, a large number of young-generation researchers have been inspired by their predecessors and become the key participants in the fields of Mg alloys, which consequently led to the establishment of China Youth Scholar Society for Magnesium Alloys Research in 2015. Since then, the first two China Youth Scholars Symposiums on Mg Alloys Research had been held at Harbin (2015) and Chongqing (2016) China, respectively. A number of crucial research interests related to fundamental and applied Mg research were discussed at the conferences and summarized in this short perspective, aiming to boost far-reaching initiatives for development of new Mg-based materials to satisfy the requirements for a broad range of industrial employments. Herein, four main aspects are included as follows: i) Plastic deformation mechanism and strengthening strategy, ii) Design and development of new Mg-based materials, iii) Key service properties, and iv) New processing technologies. 相似文献
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轻水反应堆(LWR)是国际上多数核电站采用的堆型。锆具有良好的加工性能,优良的机械性能,较高的熔点、优异的耐蚀性能及核性能,被用作燃料包壳和堆芯结构材料,是发展核电及核动力舰船不可替代的关键结构材料和功能材料。随着核电技术的发展,对堆芯包壳材料性能提出了更高的要求,综述了核用锆合金包壳材料的国内外研究和使用现状以及新型SiC包壳材料的研发现状。总体来说,锆合金在未来几十年内仍是核反应堆包壳材料的主要用材,开展新合金的研发,不断提升锆合金的性能是世界各国研究者共同的目标;适时加大投入力度,强化条件建设,就能加快具有国内自主知识产权锆合金的产业化步伐,可最终实现核电及核动力用锆合金材料的自主化;SiC材料具有更高的熔点、更好的耐腐蚀性能,是一种极具应用潜力的材料,有可能成为第4代核反应堆的包壳材料,但还需投入大量研究。 相似文献
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Huatang YUAN Lifang JIAO Jiansheng CAO Xiusheng LIU Ming ZHAO Yongmei WANGInstitute of New Energy Material Chemistry Nankai University Tianjin China 《材料科学技术学报》2004,20(1):41-45
Magnesium-based rechargeable batteries might be an interesting future alternative to lithium-based batteries. It is so far well known that Mg2+ ion insertion into ion-transfer hosts proceeds slowly compared with Li+, so it is necessary to realize fast Mg2+ transport in the host in addition to other requirements as practical cathode materials for magnesium batteries. Positive electrode materials based on inorganic transition-metal oxides, sulfides, and borides are the only ones used up to now to insert magnesium ions. In this paper, the available results of research on materials suitable as possible, for secondary magnesium batteries, are reviewed. 相似文献
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ABSTRACTMagnesium and its alloys, as the metal materials with the lowest density among structural materials, have attracted much attention due to their excellent properties such as high specific stiffness, good electromagnetic shielding properties and good vibration damping effects. However, its low strength, inherent brittleness and poor corrosion resistance limit its application in various industries. By adding a reinforcing phase to the magnesium matrix, a magnesium-based composite material having excellent properties has become one of the effective ways to realise the industrial application of magnesium alloys. This article reviews the recent research progress of magnesium-based composites, including the reinforcing phases and preparation methods of magnesium-based composites, and looks forward to the future development and research directions of magnesium-based composites. 相似文献
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镁合金的生物医用研究 总被引:5,自引:0,他引:5
镁是可被人体吸收的常量元素,且具有较高的比强度和比刚度,在医用植入材料领域具有广阔的应用前景.综述了镁及镁合金作为医用植入材料的研究现状,并对医用镁及镁合金的表面改性技术进行了简单叙述. 相似文献
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This article analyses the recent progressive increase in resourcequantity and production quantity of unconventional natural gas in China, describes its natural properties and the concepts, strategies and approaches of its development, summarizes the special techniques, management concepts and development modes formed in the process of its development, and puts forward proposals to accelerate the development of unconventional natural gas of China. The technically recoverable reserve of unconventional natural gas is 1.7 times that of conventional natural gas and its output in 2012 accounted for 41.8% of the total output in China. Chinese tight gas development has gained success, coal-bed methane development and shale gas production pilots have made important progresses. As the key feature of unconventional natural gas is "low grade", for the effective scale development, developers must build up the engineering concept of low-grade resources development, adhere to the low cost strategy, take the development route of "a step backward and then a step forward", apply such ideas and methods of engineering management as low cost dualistic integrative innovation, full control network management, economic limit theory, integrated operation and "four orientations" engineering management, establish a "two lows" engineering management system, and take reference of the successful development mode of the tight gas in Sulige and the coal-bed methane in the Qinshui basin. In order to achieve the objective of rapid development of nonconventional natural gas in China and to accelerate the development pace, the government should continue to increase support, to speed up the reform of natural gas price adjustment, to set up national comprehensive development and utilization demonstration areas, to input in sustainable technological research and to promote engineering management innovation.? 相似文献
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随着石油资源的日益短缺,生物质资源的开发和利用显得尤为重要。木质素作为第二大天然高分子,来源广泛,价格低廉,其高达60%以上的含碳量,是制备碳纤维的理想原料。因此,基于木质素基碳纤维重要的应用价值和广阔的市场前景,文中详细综述了木质素为前驱体制备碳纤维的研究进展。木质素基碳纤维的制备包括:木质素的提取、前驱体的制备、原丝的预氧化和氧化原丝的碳化阶段,重点分析了木质素作为碳纤维前驱体存在的不足及解决方法。并对今后该领域的研究方向进行了展望。 相似文献