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Study on dry friction and wear resistance of a WC-Co particle reinforced iron matrix composite material

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China Foundry 2013年第3期10卷 135-140页

作者： Zhang Peng Zeng Shaolian Zhang Zhiguo Li Wei Department of Materials Science and Engineering Jinan University Engineering Research Centre of Wear Resistant Materials Jinan University

In order to select a suitable material for the rolling mill guide application, the dry sliding friction and wear resistance of a tungsten carbide combining cobalt (WC-Co) particle reinforced chromium cast iron composite material were studied. In particular, the wear resistance was discussed in detail. The results showed that the composite material demonstrates 25 times the wear resistance of high Cr cast iron, and 9 times the wear resistance of heat resistant steel. However, the average friction factor in the stable friction stage showed a relationship of μComposites/45#steel>μHigh chromium cast iron/45#steel>μHeat resistant steel/45 # steel. The wear resistance mechanism of the composite material was associated with the reinforcing particles, which protruded from the worn surface to bear the friction load when the matrix material surface was worn, thereby reducing the abrasive and adhesive wear. In addition, the matrix material possessed suitable hardness and toughness, providing a support to the reinforcements.

关键词： particle reinforcement composite material high Cr cast iron friction and wear

Synergistic regulation of current-carrying wear performance of resin matrix carbon brush composites with tungsten copper composite powder

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Journal of Central South University 2021年第10期28卷 2973-2987页

作者： TU Chuan-jun GONG Pei REN Gai-mei CHEN Gang CHEN Jian HONG Li-rui LIU Ping College of Materials Science and Engineering Hunan UniversityChangsha 410082China School of Materials Science and Engineering Sichuan University of Science&EngineeringZigong 643000China

Resin matrix carbon brush composites(RMCBCs)are critical materials for high-powered electric ***,effectively improving their wear resistance and heat dissipation remains a *** prepared with flake graphite powders that were evenly loaded with tungsten copper composite powder(RMCBCs-W@Cu)exhibited a low wear rate of 1.63 mm^(3)/h,exhibiting 48.6%reduction in the wear rate relative to RCMBCs without additives(RMCBCs-0).In addition,RMCBCs-W@Cu achieved a low friction coefficient of 0.243 and low electric spark *** findings indicate that tungsten copper composite powders provide particle reinforcement and generate a gradation effect for the epoxy resin(i.e.,connecting phase)in RMCBCs,which weakens the wear of RMCBCs caused by fatigue under a cyclic current-carrying wear.

关键词： resin matrix carbon brush composite tungsten copper composite powder current-carrying wear particle reinforcement

Effects of TaN nanoparticles on microstructure,mechanical properties and tribological performance of PEEK coating prepared by electrophoretic deposition

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Transactions of Nonferrous Metals Society of China 2022年第10期32卷 3334-3348页

作者： Lin CAO Peng ZHANG Shuang-jian LI Qi-wei WANG Da-hai ZENG Chuan-yong YU Qing-yang LI Yu-wen LIAO Zhi-dan LIN Wei LI Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou 510632China Shaoguan Research Institute of Jinan University Shaoguan 512027China

In order to solve the friction,wear and lubrication problems of titanium,a series of TaN/ployether−ether−ketone(PEEK)coatings were developed by electrophoretic deposition,and the effects of TaN nanoparticles on the microstructure,mechanical properties and tribological performance of coatings were *** manifest that the introduction of TaN nanoparticles into PEEK coatings could improve the deposition efficiency,enhance the resistant deform capacity,increase the hardness,elastic modulus and adhesive bonding *** with the pure PEEK coating,the friction coefficient of P-TN-3 was greatly reduced by 31.25%.The wear resistance of P-TN-3 was also improved in huge boost,and its specific wear rate was decreased from 9.42×10^(−5) to 1.62×10^(−5) mm^(3)·N^(−1)·m^(−1).The homogeneous composite TaN/PEEK coatings prepared by electrophoretic deposition were well-adhered to the titanium alloy substrate,TaN nanoparticles could improve the strength of PEEK coating,and provide wear-resistance protection for titanium alloys.

关键词： ployether−ether−ketone coating tantalum nitride particle reinforcement microstructure mechanical properties biotribology