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Volume 24 Issue 11
Nov.  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(11): 1278-1283
Tao Peng, Qing-zhi Yan, Xiao-lu Zhang,  and Xiao-jiao Shi, Solid FeS lubricant:a possible alternative to MoS2 for Cu-Fe-based friction materials, Int. J. Miner. Metall. Mater., 24(2017), No. 11, pp. 1278-1283. https://doi.org/10.1007/s12613-017-1520-4
Cite this article as:
Tao Peng, Qing-zhi Yan, Xiao-lu Zhang,  and Xiao-jiao Shi, Solid FeS lubricant:a possible alternative to MoS2 for Cu-Fe-based friction materials, Int. J. Miner. Metall. Mater., 24(2017), No. 11, pp. 1278-1283. https://doi.org/10.1007/s12613-017-1520-4
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研究论文Open Access

Solid FeS lubricant:a possible alternative to MoS2 for Cu-Fe-based friction materials

  • Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

  • 通讯作者:

    Qing-zhi Yan    E-mail: qzyan@ustb.edu.cn

  • Molybdenum disulfide (MoS2) is one of the most commonly used solid lubricants for Cu-Fe-based friction materials. Nevertheless, MoS2 reacts with metal matrices to produce metal sulfides (e.g., FeS) and Mo during sintering, and the lubricity of the composite may be related to the generation of FeS. Herein, the use of FeS as an alternative to MoS2 for producing Cu-Fe-based friction materials was investigated. According to the reaction principle of thermodynamics, two composites-one with MoS2 (Fe-Cu-MoS2 sample) and the other with FeS (FeS-Cu2S-Cu-Fe-Mo sample), were prepared and their friction behaviors and mechanical properties were compared. The results showed that MoS2 reacted with the Cu-Fe matrix to produce FeS, metallic ternary sulfides, and Mo when sintered at 1050℃. The MoS2-Cu-Fe and FeS-Cu2S-Cu-Fe-Mo samples thereby exhibited similar characteristics with respect to phase composition, density, hardness, and tribological behaviors. Micrographs of the worn surfaces revealed that the stable friction regime for both composites stemmed from the iron sulfides friction layers rather than from the molybdenum sulfides layers.
    • Research ArticleOpen Access

    Solid FeS lubricant:a possible alternative to MoS2 for Cu-Fe-based friction materials

    + Author Affiliations
      Abstract
    • Molybdenum disulfide (MoS2) is one of the most commonly used solid lubricants for Cu-Fe-based friction materials. Nevertheless, MoS2 reacts with metal matrices to produce metal sulfides (e.g., FeS) and Mo during sintering, and the lubricity of the composite may be related to the generation of FeS. Herein, the use of FeS as an alternative to MoS2 for producing Cu-Fe-based friction materials was investigated. According to the reaction principle of thermodynamics, two composites-one with MoS2 (Fe-Cu-MoS2 sample) and the other with FeS (FeS-Cu2S-Cu-Fe-Mo sample), were prepared and their friction behaviors and mechanical properties were compared. The results showed that MoS2 reacted with the Cu-Fe matrix to produce FeS, metallic ternary sulfides, and Mo when sintered at 1050℃. The MoS2-Cu-Fe and FeS-Cu2S-Cu-Fe-Mo samples thereby exhibited similar characteristics with respect to phase composition, density, hardness, and tribological behaviors. Micrographs of the worn surfaces revealed that the stable friction regime for both composites stemmed from the iron sulfides friction layers rather than from the molybdenum sulfides layers.
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