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某些金属基固体自润滑材料的研究概况 总被引:1,自引:0,他引:1
金属基固体自润滑材料是材料科学研究领域的一个重要发展方向,因其在特殊条件下具有优良的摩擦学特性而受到人们的广泛关注,为促进该类材料的研究与应用,作者综述了某些金属基固体自润滑材料的研究概况,重点介绍了其摩擦学特性或相关物理机械性能,并提出了该类材料几个值得重视的发展趋势。 相似文献
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随着当今世界工业化进程的推进,金属基固体自润滑复合材料因其独特的润滑性能受到广泛的关注,成为润滑领域一个重要的研究方向.介绍了金属基固体自润滑材料的主要制备方法和特点以及固体润滑剂的主要种类、制备方法和特性,总结了近年来国内外对铜基、铝基、镍基、银基和铁基等金属基固体自润滑复合材料的研究进展,并对金属基固体自润滑复合材料未来的发展进行了展望. 相似文献
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金属基镶嵌型固体自润滑材料在连铸机械中的应用赵强(新余钢铁总厂;邮编:336501)Useofmetalbasedself-lubricatingmaterialincontinuouscastingequipment¥ZhaoQiang(Xinyu... 相似文献
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金属基自润滑复合材料因其具有优良的力学性能及自润滑性能而受到广泛的关注.首先,介绍MAX相的结构、性能以及MAX相固体润滑剂的应用背景和优势.综述了国内外金属基自润滑复合材料的研究进展.然后,讨论了MAX/金属基自润滑复合材料的润滑机理并建立润滑模型.最后,展望MAX/金属基自润滑复合材料的研究前景. 相似文献
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《有色金属材料与工程》2017,(1)
Ti_3SiC_2是一种新型的金属陶瓷材料,该材料兼具金属与陶瓷材料的双重性能,具有良好的导电性、导热性、加工性、耐腐蚀性与高温抗氧化性,同时该材料还具有超低的摩擦因数.基于其独特性能,大量科研工作开始投入到使用Ti_3SiC_2代替石墨制备金属基自润滑复合材料中.介绍了近年来石墨及以Ti_3SiC_2作为固体润滑颗粒制备的金属基自润滑复合材料的研究现状及进展.探讨了石墨和Ti_3SiC_2与金属界面结合问题,并对比两种复合材料的力学性能和摩擦学性能.最后指出以Ti_3SiC_2代替石墨制备金属基自润滑材料的可行性以及未来的发展方向. 相似文献
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一种新的固体润滑轴承——金属基镶嵌型固体自润滑轴承在我国首次研制成功,湖北省科协于1985年1月24日在武汉市召开了技术鉴定会。 金属基镶嵌型固体自润滑轴承是国外七十年代末期发展起来的新型材料,这种材料 相似文献
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添加镍包覆石墨对铁基固体自润滑复合材料性能的影响 总被引:2,自引:0,他引:2
研究了利用粉末冶金法制备添加镍包覆石墨的铁基固体自润滑复合材料的力学性能及摩擦学性能,结果表明:以Fe-Ni-Cu-Mo成分作为基体的含石墨材料中,当石墨含量为0.9%(质量分数)时其力学性能达到最佳值.添加镍包覆石墨复合材料的力学性能和摩擦学性能明显优于添加未包覆石墨的复合材料.随着镍包覆石墨含量的增加,复合材料的力学性能不断降低,摩擦系数也随之降低,磨损率呈现先降低后又逐渐升高的趋势,当镍包覆石墨含量为3.36%时磨损率降为最低,获得了良好的综合性能.所研制的添加镍包覆石墨的铁基固体自润滑复合材料已经在多家钢厂得到了应用. 相似文献
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以Al,Fe,Zn等金属粉末和Si粉为原料,采用热压法制备MoS_2含量(质量分数)分别为0和3%的铝基复合材料,在滑动速度为0.377~1.131 m/s以及载荷为4~10 N的条件下进行摩擦试验,研究MoS_2对铝基复合材料摩擦磨损性能的影响。结果表明:在0.377 m/s的滑动速度下,3%MoS_2/铝基复合材料在10 N载荷下具有较低的平均摩擦因数0.4,比不含MoS_2材料的摩擦因数降低近一半;在0.755 m/s的滑动速度下,2种材料的摩擦因数和磨损率接近;在1.131 m/s的滑动速度下,载荷7~10 N时2种材料都严重磨损,3%MoS_2/铝基材料具有相对较低的磨损率,磨损机理为熔化磨损,未添加MoS_2材料的磨损机理为严重塑性变形磨损。添加3%MoS_2可显著改善铝基材料的摩擦磨损性能。 相似文献
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《粉末冶金学》2013,56(4):185-190
AbstractTribaloy particles with a microstructure of a hard Laves phase in ductile cobalt or nickel matrix can be incorporated in bronze and steel materials by powder metallurgical methods. The Tribaloy content and the compacting and sintering conditions determine the microstructure and the mechanical and tribological properties of these materials. In this investigation the influence of the sintering temperature on the properties of Fe–Tribaloy mixtures was studied. Higher sintering temperature improves the bonding between Tribaloy particles and iron matrix; however, it decreases the heterogeneity of the composite which is necessary for optimum performance under conditions of dry or mixed friction. The best bearing materials are produced at intermediate sintering temperatures where a compromise between mechanical strength and tribological performance can be achieved. PM/0180 相似文献
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《粉末冶金学》2013,56(3):338-342
AbstractPowder materials are widely used in journal bearings since they provide a good tribological performance with journal bearings. These bearings are self-lubricated and can be used in places where no lubricating is possible. In this study, tribological and mechanical properties of copper based CuSn10, ferrous based Fe–graphite and copper+ferrous based CuSnFe–graphite bearings manufactured by powder metallurgy method have been determined and compared. Wear tests were carried out at 20 N load and 1500 rev min?1 every 30 min for 2·5 h using radial journal bearing wear test rig. Hardness, tensile, compressive, bending and radial fracture mechanical tests of these bearing materials were carried out. As a result, tribological and mechanical properties improved in CuSnFe–C bearings. 相似文献
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A. G. Kostornov Yu. M. Simeonova O. I. Fushchich T. M. Chevychelova G. E. Sotirov A. D. Kostenko 《Powder Metallurgy and Metal Ceramics》2006,45(3-4):118-123
Features and peculiarities of structure formation for the friction zone in highly effective composite materials based on copper
for prescribed experimental conditions (high contact loads and sliding rates, absence of a lubricant, operation in a high
vacuum or in air) are considered. It is shown that reliable efficiency for a tribological system under friction conditions
with action of high compressive forces and sliding rates is provided by material adaptation that is achieved via the tribological
synthesis at the contact surfaces of a lubricating layer different in composition and structure from the original composite.
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Translated from Poroshkovaya Metallurgiya, Nos. 3–4(448), pp. 14–21, March–April, 2006. 相似文献
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采用粉末冶金技术制备Ni—Cr/hBN自润滑复合材料,研究hBN含量及摩擦栽荷对Ni—Cr/hBN复合材料的性能及摩擦磨损行为的影响.结果表明:随hBN含量增大,Ni—Cr/hBN复合材料的密度、抗弯强度和摩擦系数均逐渐减小.当载荷为20N时,Ni—Cr/hBN复合材料的磨损速率随hBN含量的增大而减小:当栽荷为60N和100N时,磨损速率随hBN含量增大呈先减小后增大的趋势.当hBN含量不变时。磨损速率随载荷增大而逐渐增大.通过探讨Ni—C汕BN自润滑复合材料的润滑与磨损机理可知。材料的摩擦系数取决于hBN的含量,而磨损速率与材料的力学性能有关.当hBN含量为9%(质量分数),摩擦载荷为60N时,Ni—Cr/hBN自润滑复合材料具有最佳的摩擦学综合性能. 相似文献
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Maslyuk Vitalii A. Napara-Volgina Svetlana G. 《Powder Metallurgy and Metal Ceramics》2003,42(3-4):122-128
Three-layered non-tungsten hard alloys for tool applications of the type KKhNFT5 KKhNFT25 KKhNFT5 and layered powder metallurgy materials for tribological applications with a working layer of composites based on stainless steels were investigated. Basic requirements for the creation of wear- and corrosion-resistant powder metallurgy materials for tool and tribological applications were formulated. These mainly concern their composition and structure. 相似文献