共查询到18条相似文献,搜索用时 453 毫秒
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稀土高分子材料是通过稀土金属与高分子的复合而制备的一类兼具稀土光、电、磁等特性和高分子质轻、抗冲击和易加工等优良综合性能的功能材料。通过配位或聚合的方法将稀土离子键合到高分子链上而获得高分子稀土金属配合物是20世纪80年代才出现的一类稀土有机材料,这类兼有稀土离子的光、电、磁特性和有机高分子优良的材料性能的功能材料,因可能作为荧光、激光和磁性材料等而引起人们极大的兴趣。 相似文献
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稀土冶炼新工艺、新技术简介 总被引:1,自引:0,他引:1
随着稀土应用的日益扩大,稀土的需求量不断增长。特别是高技术的发展,对稀土材料的要求越来越高。同时为了开发稀土金属及其化合物的新特性,特别是光、电、磁性能,也要求制备更高纯度的材料。近年来,许多国 相似文献
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稀土金属的高纯化技术 总被引:7,自引:2,他引:5
稀土元素具有一系列特殊性能,随着高技术的发展,稀土在电子、光电子、新型陶瓷等方面的应用越来越广。对高纯稀土金属材料的需求量也日益增加。同时为了开发稀土金属及其化合物新的特性,特别是光、电、磁性能,也要求制备更高纯度的材料。1987年日本科学技术厅开始实施“关于通过稀有金属高纯化开发新功能的基础技术研究”计划, 相似文献
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稀土产品由于其优异的物理化学性质被广泛应用于国民生产与生活领域。稀土元素特有的4f电子结构赋予其优良的光、电、磁性质,成为光、电、磁等新型功能材料的核心。基于此特点,稀土也被称为高新技术产业发展的重要战略材料。 相似文献
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Review on Rare Earth/Polymer Composite 总被引:4,自引:0,他引:4
The epecial properties of rare earth/polymer composite were described.More emphasis was put on the radiation shielding and magnetic properties,In the application to X-ray shielding,rare earth/polymer composite can make up the feeble absorbing area.If the rare earth content is high enough,it can demonstrate strong ability for thermal neutron absorption,The composite has strong paramagnetism.The feasibility of preparing magnetic rare earth/polymer compostite was discussed,In addition,three preparation methods were introducde:simlle polymerization,mixing and reaction processing,The effect of the rare earth/polymer composties pre-sturcture and the coordinate number of rare eatrh ions on the light property was analyzed,Rare earth/polmer compostie may have the structure and property simlar to those of the ionomer,The feasibility of the in-situ preparation of the rare earth/polymer nano structure is indicated ,Besides,the relationship between struchture and properties of the rare earth/polymer composite was discussed,The problems associated with such composite materials were also presented. 相似文献
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陈希颖 《中国稀土学报(英文版)》1992,(1)
Application of rare earth in steels has gone through three stages in China.The investigation of rare earthadding method begun at the late 1970's has solved the technical problems caused by rare earth addition.Controlling sulphide morphology,several rare earth treated steel grades with improved properties have been developedand put into production.Rare earth exerts remarkable effect on the performance of low sulphur steel and on thehydrogen behavior in steel.Rare earth used for surface treatment of iron and steel materials expands rare earthutilization. 相似文献
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Rare earth mineral composite materials were prepared using rare earths and natural far-infrared mineral materials. The influences of rare earth additive content and heat treatment temperature on the far infrared radiance were studied. The results show that the far infrared radiance of rare earth mineral composite materials is 0.93 when the rare earth additive content is 6% and heat treatment temperature is 750 ℃. 相似文献
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稀土新材料及其在高技术领域的应用 总被引:49,自引:5,他引:44
本文简要叙述了稀土新材料及其在高技术领域的应用,并进行了简要分析,认为提高我国稀土产业自身高技术应用水平以及开发稀土新材料及其在高技术领域应用技术是实现稀土资源优势向经济优势转化的根本出路。 相似文献
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Zhu Dongbin Liang Jinsheng Li Fenping Ding Yan Wang Lijuan Liang Guangchuan Xu Gangke 《中国稀土学报(英文版)》2006,24(Z2)
Rare earth composite materials radiating far-infrared rays were prepared according to far infrared absorption spectrum of main component in liquefied petroleum gas (LPG). The composite materials were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transformed infrared spectra(FTIR). The results show that after the composite materials were calcined at 873 K for 4 h, FTIR spectra of rare earth composite materials display two new peaks at 1336 and 2926 cm-1 available for activating LPG. 相似文献