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Magnetic Properties of Nd-Fe-B Sintered Magnet Powders Recovered by Yb Metal Vapor Sorption Suzuki Shunji1,Horikawa T1,Itoh M1,Machida K1 (1.Collaborative Research Center for Advanced Science and Technology, Osaka University, Osaka 565-0871, Japan) Abstract:Fine ground powders of Nd-Fe-B sintered magnet bulks(particle size=46~125 μm in diameter) were coated and alloyed with Yb metal by sorbing......
Multidisciplinary design optimization on production scale of underground metal mineZUO Hong-yan(左红艳), LUO Zhou-quan(罗周全), GUAN Jia-lin(管佳林), WANG Yi-wei(王益伟)(School of Resource and Safety Engineering, Central South University, Changsha 410083, China)Abstract:In order to ensure overall optimization of the underground metal mine production scale, multidisciplinary design optimization model......
Ab initio STUDIES ON MAGNETISM OF 3d TRANSITION METAL DIMERS J.H. Gu1,Z.L. Zhu1 (1.School of Physical Engineering and Material Physics Laboratory,Zhengzhou University, Zhengzhou 450052, China... the electronic and magnetic properties of 3d transition metal dimers. It predicted the antiferromagneticity of Cr2 and ferromagneticity of other species. The Mn2 dimer was shown to be ferromagnetic coupling......
. Key words: metal matrix composites; heat treatment; fracture; microstructure CLC number: TG146 Document code: A 1 INTRODUCTION In recent years, metal matrix composites(MMCs) have received... temperature were carried out in accordance with ASTM E8-78 circular unnotched section test pieces in an Instron model 1175 testing machine at a constant cross head speed of 1mm/min. The gauge length......
: The distribution of shear stress on the cross-section of plastic metal solid circular shaft under pure torsion yielding, the applicability of complete plastic model assumption and the shear stress formula were...J. Cent. South Univ. Technol. (2011) 18: 1018-1023 DOI: 10.1007/s11771-011-0797-0 Analysis of complete plasticity assumption for solid circular shaft under pure torsion and calculation of shear......
异型坯连铸二冷工艺优化研究孙维1,汪开忠1,文光华2,徐海伦3,汤寅波1,唐萍1(1.安徽省马鞍山市马鞍山钢铁股份有限公司技术中心2.重庆大学 材料科学与工程学院, 重庆 4000443.重庆大学 材料科学与工程学院,重庆 400044)摘 要:基于二冷区传热的基本原理和异型坯凝固传热特点,建立了异型坯凝固传热模型;通过现场测试铸坯表面温度和坯壳厚度对数学模型进行修正,得到了异型坯连铸过程中表面温度随时间变化的规律;同时,对原有二冷制度进行了评估,提出了合理的二冷改进措施.通过二冷工艺的优化,提高了二次冷却的均......
Cavitation-erosion mechanism of laser cladded SiC particle reinforced metal matrix composite ZHANG Chun-hua(张春华)1, 2, 3, ZHANG Song(张 松)1, YANG Hong-gang(杨洪刚)1, ZHU Sheng-long(朱圣龙)2, MAN Hau... of process parameters investigated, the parameters were optimized to produce the SiCp reinforced metal matrix composites(MMC) modified layer on AA6061 alloy surface. After being treated, the modified layer......
J. Cent. South Univ. (2019) 26: 813-823 DOI: https://doi.org/10.1007/s11771-019-4051-5 Adsorption properties of a novel 3D graphene/MgO composite for heavy metal ions ZHOU Ying(周颖)1, LIANG Chun-yan... to characterize the prepared 3D graphene/MgO composite. The adsorption performance of some metal ions on 3D graphene/MgO was investigated. The results showed that the adsorption capacity was greater than 3D......
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; Dynamic optimization of cutoff grade in underground metal mining GU Xiao-wei(顾晓薇), WANG Qing(王青... the overall economic gain from a metal mine operation, selection of cutoff grades must consider two important aspects: the time value of money and the spatial variation of the grade distribution......