共查询到15条相似文献,搜索用时 250 毫秒
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纯镁基复合材料的阻尼性能 总被引:8,自引:0,他引:8
制备了以线了镁为基体,以混杂碳化硅颗粒和硅酸铝短纤维为增强物的一类特殊复合材料,了其阻尼性能,发现镁基复合材料的强度优于纯镁,但阻尼性能却降低了并随增强物含量增加,这种下降越大。镁基复合材料的阻尼民其状态关系密切,退火处理和热循环自理提高了复合材料的阻尼性能。 相似文献
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《中国新技术新产品》2016,(15)
颗粒增强镁基复合材料凭借其优良的比强度、比刚度、耐磨性、耐高温、减震性能以及优异的阻尼性能和电磁屏蔽性能等,作为功能材料被广泛地应用在电子、航空、航天特别是汽车工业等行业中。本文主要对颗粒增强镁基复合材料专利申请中专利申请的国内外的年度变化趋势、申请人类型进行分析,并总结了颗粒增强镁基复合材料专利申请中增强颗粒类型以及其专利技术改进方向。 相似文献
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颗粒增强镁基复合材料的研究现状及发展趋势 总被引:35,自引:2,他引:33
综述了颗粒增强镁基复合材料的研究概况,着重介绍了颗粒增强镁基复合材料的制备技术,界面行为和制备热力学与动力学三大研究热点,另外,对颗粒增强镁基复合材料的增强机理及常温力学性能作了简单介绍,最后,对颗粒增强镁基复合材料的研究方向进行了一些看法和展望,指出原位颗粒增强镁基复合材料的制备技术交城为制备镁基复合材料的发展趋势,镁基复合材料由于具有高的比强度,比模量和良好的耐磨性、耐高温性能和减震性能,在航空航天,特别是汽车工业具有在的应用前景和广阔的市场。 相似文献
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Muhammet Emre Turan Yavuz Sun Yasin Akgul 《Fullerenes, Nanotubes and Carbon Nanostructures》2018,26(2):130-136
The present study aims to fabricate fullerene (C60) reinforced magnesium matrix composite via semi powder metallurgy in hot press system under high purity argon atmosphere. Improvement of wear resistance of pure magnesium with the addition of fullerene is also aimed with this study. Hardness and wear tests at room temperature were performed to investigate the mechanical effect of fullerene nanoparticles. Microstructures of fabricated composites were characterized using Scanning Electron Microscope (SEM). Results clearly show that hardness performance was improved up to 0.5 wt. % fullerene addition directly. A uniform distribution was also achieved according to the mapping and line EDX analysis for the lower content of fullerene. Agglomeration of fullerene was observed for 1 wt. % reinforced composite. Wear performances of pure magnesium were also improved when harder fullerene reinforcements incorporated into the matrix. Abrasion and oxidation were main wear mechanism for unreinforced and fullerene reinforced composites. Enhancement of hardness and wear performances might be attributed to the high specific surface area of fullerene and achievement of uniform distribution of reinforcement in magnesium matrix. 相似文献
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《Materials Science & Technology》2013,29(11):1389-1396
AbstractThe objective of the present work was to investigate the effect of presence of SiC reinforcement and the vibration frequency on the overall damping characteristics of pure magnesium. The testing method uses a combination of the modified free – free beam method coupled with a circle fit approach. The effect of frequency on the damping property was studied by adding end masses to the specimen so as to alter the resonant frequency of the suspended beam. In the present study, the results are compared against a monolithic magnesium sample. The results revealed a higher damping capability of the composite specimen at all tested frequencies when compared to monolithic magnesium. Both monolithic and reinforced magnesium showed a progressive decrease in damping with an increase in frequency. An attempt is made to rationalise the damping behaviour of the composite in terms of the presence of a process induced plastic zone at the matrix/particulate interface and the operating frequency. 相似文献