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friction and wear properties of PM cam materials with different boron contents

Rare Metals 2023年第12期42卷 4255-4263页

作者： Rui Wang Lin-Shan Wang Xue-Bing Liang Wang Zhang Yan-Ru Mu Jing-Jie Xu Li-Min Wang Shao-Ming Zhang General Research Institute for Nonferrous Metals Beijing 100088China GRIPM Advanced Materials Co.Ltd Beijing 101407China Beijing Hengyuantianqiao Powder Metallurgy Co.Ltd Beijing 101407China Beijing Engineering Research Center for Metal Powder Beijing 101407China

In this study,effects of B addition on the sintering densification,microstructure,hardness,friction and wear properties of sintered Fe-2.4C-4Cr-1Mo-0.5P-0.7Si-2.5Cu(in wt%)were *** spite of the decreased sintered density,the addition of B changes the phase composition of the materials and their ***,hardness of either the matrix or the liquid solidification structure dramatically *** changes in micro structure result in higher friction coefficient and lower wear *** is observed that the addition of0.1 wt%B offers the optimum friction and wear properties with a running-in period of only 30 s and wear volume loss of 0.006 mm^(3) under the testing *** friction and wear properties are superior to those of the other two widely used cam materials,cast iron and 45 steel.

关键词： Boron addition friction and wear property Cam material Microstructure wear mechanism

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Sliding wear behaviors of Nomex fabric/phenolic composite under dry and water-bathed sliding conditions

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friction 2014年第3期2卷 264-271页

作者： Guina REN Zhaozhu ZHANG Xiaotao ZHU Xuehu MEN Wei JIANG Weimin LIU State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesTianshui Road 18thLanzhou 730000PR China University of Chinese Academy of Sciences Beijing 100039PR China

A Nomex fabric/phenolic composite was prepared,and its tribological properties were evaluated under dry and water‐bathed sliding conditions by a pin‐on‐disk *** resulting size of the friction coefficient for the Nomex fabric/phenolic composite in the study occurred in the following order:dry sliding condition>distilled water‐bathed sliding condition>sea water‐bathed sliding *** fabric composite’s wear rate from high to low was as follows:distilled water‐bathed sliding condition>sea water‐bathed sliding condition>dry sliding *** water‐bathed sliding conditions,penetration of water into the cracks accelerated the composite’s invalidation process,resulting in a higher wear *** also found that the extent of corrosion and transfer film formed on the counterpart pin significantly influenced the wear rate of the Nomex fabric *** of the Nomex fabric composite’s wear mechanisms under the sliding conditions investigated is provided on the basis of the characterization results.

关键词： Nomex fabric/phenolic composite friction and wear property dry and water‐bathed sliding condition

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