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

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Abstract

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 investigated. In spite of the decreased sintered density, the addition of B changes the phase composition of the materials and their ratio. Moreover, hardness of either the matrix or the liquid solidification structure dramatically increases. These changes in microstructure result in higher friction coefficient and lower wear loss. It is observed that the addition of 0.1 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 mm3 under the testing conditions. Such friction and wear properties are superior to those of the other two widely used cam materials, cast iron and 45 steel.

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Acknowledgements

This study was financially supported by the National High-tech R&D Program (No. 2013AA031101), the Major Science and Technology Projects (No. 2012ZX04009011) and the Technology Project of Huairou District in Beijing (No. 2017-8).

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Authors and Affiliations

  1. General Research Institute for Nonferrous Metals, Beijing, 100088, China

    Rui Wang, Lin-Shan Wang, Xue-Bing Liang, Wang Zhang, Yan-Ru Mu, Jing-Jie Xu, Li-Min Wang & Shao-Ming Zhang

  2. GRIPM Advanced Materials Co. Ltd, Beijing, 101407, China

    Lin-Shan Wang, Xue-Bing Liang, Yan-Ru Mu, Jing-Jie Xu & Li-Min Wang

  3. Beijing Hengyuantianqiao Powder Metallurgy Co. Ltd, Beijing, 101407, China

    Lin-Shan Wang, Xue-Bing Liang, Yan-Ru Mu, Jing-Jie Xu & Li-Min Wang

  4. Beijing Engineering Research Center for Metal Powder, Beijing, 101407, China

    Lin-Shan Wang, Xue-Bing Liang, Yan-Ru Mu, Jing-Jie Xu & Li-Min Wang

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  1. Rui Wang
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  2. Lin-Shan Wang
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  4. Wang Zhang
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  7. Li-Min Wang
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  8. Shao-Ming Zhang
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Correspondence to Shao-Ming Zhang.

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Wang, R., Wang, LS., Liang, XB. et al. Friction and wear properties of PM cam materials with different boron contents. Rare Met. 42, 4255–4263 (2023). https://doi.org/10.1007/s12598-018-1127-6

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  • DOI: https://doi.org/10.1007/s12598-018-1127-6

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