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EMP复合材料对金属的磨损研究 总被引:1,自引:0,他引:1
在MPX-2000摩擦磨损试验机上,评价了EMP复合材料对钢的磨损特性,利用扫描电镜和铁谱分析技术分析别分析了它们的磨损表面和磨损微数。结果表明,EMP表层材料对钢表面的磨损以粘着-依附和金属表面微凸体拉断形式为主,在临界状态下,EMP材料对钢表面产生微切削。 相似文献
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介绍了阀门阀杆轴套自润滑材料的磨损性能,通过磨损试验,初步探讨了其摩擦机理。该材料有很好的减摩和耐磨性能,可以得到广泛应用。 相似文献
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渣浆泵快速磨损试验研究 总被引:2,自引:0,他引:2
本文研究了用低耐磨性材料制造的渣浆泵过流部件在高磨损速度下的磨损规律,以及泵性能与磨损之间的变化规律,为提高渣浆泵设计水平和可靠性提供了试验依据。 相似文献
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基于车铣技术的刀具磨损和破损分析 总被引:6,自引:1,他引:6
在车铣加工中心上,分别采用硬质合金和TiN涂层硬质合金刀片,对铝合金和不锈钢工件进行了车铣加工的刀具磨损试验,研究分析了车铣刀具的磨损和破损特征。研究表明,车铣铝合金的刀具磨损机理主要以刀具表层材料的黏结磨损为主,而车铣不锈钢的刀具磨损机理主要以刀具表层材料的疲劳-剥落磨损为主。车铣不锈钢时,刀具的损坏形式常常以微崩刃、前刀面的剥落和碎断等破损形态为主。 相似文献
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冲蚀与气蚀复合磨损试验装置及其试验研究 总被引:1,自引:0,他引:1
在分析典型含沙水流的冲蚀、气蚀磨损试验设备和方法的基础上,针对我国水力机械和水工建筑的特殊损伤破坏形式提出了基于射流的水下冲蚀与气蚀复合磨损试验设备和方法。实验室泥沙冲蚀与气蚀复合磨损模拟试验结果表明,该试验装置设计合理,可以在较短时间内获得试验数据。对2种典型的耐磨不锈钢材料进行了冲蚀磨损试验研究,发现2种材料在冲蚀磨损过程中伴随有气蚀作用机制,材料损伤的实质是冲蚀与气蚀的复合磨损。 相似文献
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船舶柴油机气缸套拉缸机理的试验研究 总被引:2,自引:0,他引:2
根据模拟试验的相似准则设计磨损试验,研究对船舶航行安全构成严重威胁的异常磨损现象,例如拉缸和咬缸。试验结果表明硬化相的性能和含量与试验所选用的材料耐磨性相一致,且随着载荷的增加,材料发生拉毛的时间呈指数关系下降,本文根据摩擦副三滑磨面接触模型,进而提出摩擦界面温度升高导致粘着以及摩擦副表面的强烈摩擦导致硬化相的碎裂甚至折断等因素是气缸套异常磨损的根本原因,为预防气缸套拉缸或者咬缸提供了理论依据。 相似文献
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B. Ya. Sachek A. M. Mezrin O. O. Shcherbakova T. I. Muravyeva D. L. Zagorskiy 《Journal of Friction and Wear》2018,39(3):206-214
Experimental aluminum alloys with the addition of iron (about 1%) have been considered in order to simulate alloys obtained from secondary raw materials (wastes of domestic manufacture, scrap, etc.). In particular, the alloys have been studied using sclerometric tests according to a criterion of relative shear strength (τ/σmc). The tribological testing of the alloys has been also carried out according to the block-pad and ball–plane schemes of loading. A mathematical model of the wear process has been used to process the results of wear testing for the ball-plane scheme of friction contact. As a result, the wear law parameter Kw has been determined for all of the experimental alloys. The results of testing have confirmed that, in general, it is possible to use aluminum alloys that contain iron for manufacturing monometallic plain bearings. The structure and chemical composition of the surface have been studied for both the initial samples and the samples after testing. 相似文献
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B. M. Ginzburg D. G. Tochil’nikov A. I. Lyashkov P. A. Shiyan V. M. Gaisin I. V. Permyakov V. P. Ponimatkin 《Journal of Friction and Wear》2011,32(4):246-250
The paper presents the results of testing of block specimens of polyoxymethylene in water-lubricated sliding boundary friction
against steel. Under these testing conditions, the polymer shows a combination of good antiwear and antifriction properties.
With the addition of 1 wt % of fullerene soot to the polyoxymethylene, its wear rate declines considerably, while its friction
coefficient remains quite low; its carrying capacity is high and the wear process is stable. The friction coefficient, wear
rate, and carrying capacity of modified pilyoxymethylene are compared to those of carbon plastics under similar testing conditions. 相似文献
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The parameter of the wear law of bronze coupled with steel under dry friction is identified by comparing the results of mathematical modeling with experimental data. The wear tests were carried out according to the steel-ball–flat-bronze sample scheme under relative reciprocal sliding of the tested samples. The modeling of the wear of the sample was based on asymptotic behavior of the solution of the corresponding wear-contact problem. The effectiveness of using this asymptotic behavior to identify the wear law based on the tribological test results has been demonstrated. 相似文献
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采用真空离子镀的方法在304不锈钢基体上喷涂厚度为3μm的TiN/Ti薄层,利用硬度计、三维形貌仪、划痕试验仪对涂层基本力学性能进行分析,通过球盘试验机分析涂层试样的摩擦磨损性能,根据波箔轴承性能测试实验台的测试结果:研究TiN/Ti涂层对基体表面耐磨减摩性能的影响。研究结果表明:TiN涂层硬度可达HV1 500,是基材硬度的5.5倍;TiN/Ti涂层平均摩擦因数为0.23,相对不锈钢304基材的平均摩擦因数0.71,降低了68%,磨损量也仅为基材的18.75%;GCr15与PTFE对磨的最大摩擦力矩可达2.4 N·mm,而TiN/Ti与PTFE对磨的最大摩擦力矩仅为1 N·mm,仅为GCr15的41.7%。TiN/Ti涂层表现出了优异的承载能力和耐磨减摩性能。 相似文献
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Jana Kukutschová Václav Roubíček Miroslav Mašláň Dalibor Jančík Václav Slovák Kateřina Malachová Zuzana Pavlíčková Peter Filip 《Wear》2010,268(1-2):86-93
Wear performance of automotive brake material is addressed and debris collected after brake dynamometer test and after ball-milling of identical semimetallic friction lining is characterized using a combination of analytical techniques. The differences between dynamometer wear debris and ball-milled samples are demonstrated. Wear debris is typified by the presence of numerous nanoparticles formed during wear process. Their chemistry resembles the chemistry of friction layer described previously. Contradicting findings by different research groups addressing automotive wear particulates are discussed and further refinement of analytical and testing techniques as well as their combination is suggested. 相似文献