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果. 关键词:路基工程；永久变形；高含水率；预估模型 中图分类号:V416.1 文献标志码:A 文章编号:1672-7207(2016)03-1058-07 Permanent...) Abstract: To explore and predict the influence of water content, especially high water content( above optimum moisture content), on the permanent deformation of compacted clay, a series of repeated load......
Development of samarium–cobalt rare earth permanent magnetic materialsJian-Hong YiFaculty of Materials Science and Engineering, Kunming University of Science and Technology摘 要:Samarium–cobalt rare-earth(Sm–Co-RE) permanent magnetic materials with large magnetic energy product, high coercive force, high Curie temperature, good thermal stability......
℃[11].通过对DSC曲线的分析,发现了烧结(CePrNd)-Fe-B磁体的共晶温度转变点. 图1 不同Ce含量的烧结(CePrNd)-Fe-B的DSC测试曲线 Fig. 1 DSC test curves of as-sintered with variation Ce content (CePrNd)-Fe-B magnet measured at heating...结果如表1所示. 图6 高温烧结后及不同回火温度下BSE图像和EDS分析结果 Fig. 6 BSE images and EDS analyses results on as-sintered magnet(a) and at different annealing temperatures 表1 不同回火温度富Nd相稀土含量 Table 1 ......
, China)Abstract:The subsidence of the mining area was monitored by analyzing the phase of permanent scatters (PS) which maintained high coherence in magnitude of SAR images. A new method of spatial... show that the accuracy can be ± 2.1 mm with the leveling data being used as the external validation data.Key words:permanent scatters; corner reflector (CR); constraint adjustment; mining subsidence......
Advance in the chemical synthesis and magnetic properties of nanostructured rare-earth-based permanent magnetsCe Yang,Yang-Long HouDepartment of Materials Science and Engineering,College of Engineering,Peking University摘 要:Rare-earth-based permanent magnets are one of the most important magnets in both scientific and industrial fields......
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Recovery of neodymium,dysprosium,and cobalt from NdFeB magnet leachate using an unsymmetrical dialkylphosphinic acid extractant,INET-3Zhengyu Liu1,Jiaming Wu1,Xinyu Liu1,Wen Wang1,Ziwei Li1,Ruijing Xu1,Yue Ding2,Junlian Wang11. School of Civil and Resource Engineering,University of Science and Technology Beijing2. Shijiazhuang Vocational College of Technology & Information摘 要:
Recovery of neodymium,dysprosium,and cobalt from NdFeB magnet leachate using an unsymmetrical dialkylphosphinic acid extractant,INET-3Zhengyu Liu1,Jiaming Wu1,Xinyu Liu1,Wen Wang1,Ziwei Li1,Ruijing Xu1,Yue Ding2,Junlian Wang11. School of Civil and Resource Engineering,University of Science and Technology Beijing2. Shijiazhuang Vocational College of Technology & Information摘 要:
NdFeB材料化学镀镍层起泡脱皮原因及解决方法 王憨鹰1,陈焕铭1,王冬玲1 (1.宁夏大学物理电气信息学院,宁夏,银川,750021) 摘要:化学镀镍层起泡脱皮会导致腐蚀加速.针对NdFeB材料化学镀后起泡脱皮的现象,总结出了3个方面的原因:基体材料的特殊性;镀层与基体的结合力;镀层厚度,并提出了相应的解决办法. 关键词:NdFeB磁体; 化学镀; 结合力; 起泡脱皮; [全文内容正在添加中] ......
磁温度补偿合金对永磁体补偿效果的表征 敖晖1,李平1,曲选辉1,何新波1 (1.北京科技大学材料科学与工程学院新金属材料国家重点实验室,北京,100083) 摘要:采用外补偿法改善Nd-Fe-B永磁材料的磁性能温度稳定性.讨论了磁温度补偿合金与永磁体组合后的磁性能和温度稳定性的表征.研究表明: 用组合磁体的最大磁能积可以表征其磁性能, 用开路法测试的可逆磁通温度系数可表征组合磁体的磁性能温度稳定性.用本实验室开发的磁温度补偿合金得到的组合磁体的可逆磁通温度系数小于0.001%/℃(20~100 ℃), 室温下的最大磁能级达到195 kJ·m-3.外补偿法不仅能够有效地改善Nd-Fe-B永......
