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SmCo 2:17型稀土永磁体的矫顽力机制研究和发展趋势 孙继兵1,张哲旭1,郭平1,杨薇1,崔春翔1 (1.河北工业大学材料学院,天津,300130) 摘要:SmCo2:17型合金由于在高温方面有着优越的磁性能,在微波通讯技术,航空航天,国防工业,交通运输业等很多领域有着广泛的应用.最近又提出了最高工作温度高于400℃的要求,对2:17型SmCo永磁体提出了新的挑战.综述了烧结2:17型SmCo合金的矫顽力机制及成分和工艺对矫顽力的影响,介绍了2:17型SmCo永磁体的应用情况及其发展趋势. 关键词:高温稀土永磁; 矫顽力机制; 发展趋势; 时效处理; [全文内容正在添加中] ......
THE INFLUENCES OF SOLUTION PH AND CURRENT DENSITY ON COERCIVITY OF ELECTROPLATING CoNdNiMnP PERMANENT MAGNETIC ALLOY FILM ARRAYS B.Peng1,H.C.Jiang1,J.P.Zhang1,W.L.Zhang1,W.X.Zhang1,S.Q.Yang1... on coercivity of electroplating CoNdNiMnP permanent magnetic film arrays were studied. The experiment results show that both for solution PH and current density there were the best depositing......
REACTION PROBABILITIES OF ENERGETIC SPECIES AT GROWING DIAMOND FILM SURFACES BY MOLECULAR DYNAMICS SIMULATION Q.Y.Zhang1,E.Bauer-Grosse2 (1.State Key Laboratory for Materials Modification by Laser...) Abstract:A Molecular Dynamics (MD) simulation with Tersoff empirical many-body potentialhas been employed to investigate the growth processes of diamond film with energeticspecies deposition......
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In对2:17型SmCo磁性材料磁性能及电阻率的影响厉天翼1,冯再新1,赵健21. 中北大学材料科学与工程学院2. 中国兵器科学研究院宁波分院焊接与表面再制造技术研究室摘 要:为降低稀土永磁电机的涡流损耗,需要提高稀土永磁体的电阻率.采用感应熔炼的方法制备3种不同In掺杂量的2∶17型SmCo合金铸锭,并用传统的粉末冶金工艺获得最终磁体,研究In对SmCo稀土永磁材料磁性能及电阻率的影响.结果表明:In元素主要分布在晶界处,形成SmCu2In相;2∶17型SmCo磁体的剩磁虽然随着In含量的增加而降低,但是磁体电阻率逐渐增加,最大增幅达26%.关键词:In;2∶17型SmCo;SmCu2In相;电阻率;......
Characteristics of unsteady lubrication film in metal-forming process with dynamic roll gapWANG Qiao-yi(王桥医)1, ZHANG Ze(张泽)1, CHEN Hui-qin(陈慧勤)1, GUO Shan(过山)1, ZHAO Jing-wei(赵敬伟)2(1. School... on the theory of unsteady hydrodynamic lubrication and relevant mathematic and physical methods, a basic model was developed to analyze the unsteady lubrication film thickness, pressure stress and friction......
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is mainly related to the formation of 2?7 phase. Key words: rapid solidification; annealing; coercivity; nanocrystalline microstructure; SmCo 1 Introduction Precipitation hardened Sm(Co, Fe, Cu, Zr)z......