Lima, Gabriel Araujo deGabriel Araujo deLimaKlein, Aloisio NelmoAloisio NelmoKleinPagnan Furlan, KalineKalinePagnan Furlan2022-07-112022-07-112022-07-06Lubricants 10 (7): 142 (2022)http://hdl.handle.net/11420/13108In this work, self-lubricating composites containing MoS₂ and graphite dispersed in an iron matrix were produced by powder metallurgy and sintering. Previous studies demonstrate that MoS₂ reacts with iron matrixes during sintering, making the production of Fe-MoS₂ composites rather difficult. Therefore, this study focused on a potential solution to avoid or reduce this reaction, whilst still providing good tribological properties. Our results show that the addition of graphite retards the reaction of MoS₂ with iron and that the combination of MoS₂ + graphite results in composites with an optimized coefficient of friction associated with a low wear rate both in nitrogen and air atmospheres. Through adequate control of the lubricant’s particle size, composition, and processing parameters, self-lubricating iron-based composites with a low dry coefficient of friction (0.07) and low wear rate (5 × 10^−6 mm³·N^−1·m^−1) were achieved.In this work, self-lubricating composites containing MoS₂ and graphite dispersed in an iron matrix were produced by powder metallurgy and sintering. Previous studies demonstrate that MoS₂ reacts with iron matrixes during sintering, making the production of Fe-MoS₂ composites rather difficult. Therefore, this study focused on a potential solution to avoid or reduce this reaction, whilst still providing good tribological properties. Our results show that the addition of graphite retards the reaction of MoS₂ with iron and that the combination of MoS₂ + graphite results in composites with an optimized coefficient of friction associated with a low wear rate both in nitrogen and air atmospheres. Through adequate control of the lubricant’s particle size, composition, and processing parameters, self-lubricating iron-based composites with a low dry coefficient of friction (0.07) and low wear rate (5 x 10⁻⁶ mm³ .N⁻¹.m⁻¹) were achieved.en2075-444220227Multidisciplinary Digital Publishing Institutehttps://creativecommons.org/licenses/by/4.0/self-lubricating compositessinteringsolid lubricantstribological propertiesTechnikIngenieurwissenschaftenJournal Article2022-07-0810.15480/882.446310.3390/lubricants1007014210.15480/882.4463Journal Article