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211 results on '"Klein, Aloisio Nelmo"'

15. The Effect of Using Hollow Cathode on the Tribological Behavior of Plasma Nitrided Layers.

Author

de Souza Lamim, Thiago, Salvaro, Diego, Giacomelli, Renan Oss, Binder, Roberto, Binder, Cristiano, Klein, Aloisio Nelmo, de Mello, José Daniel Biasoli, Ceccarelli, Marco, Series Editor, Hernandez, Alfonso, Editorial Board Member, Huang, Tian, Editorial Board Member, Takeda, Yukio, Editorial Board Member, Corves, Burkhard, Editorial Board Member, Agrawal, Sunil, Editorial Board Member, and Uhl, Tadeusz, editor

Published
2019
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40. Controlling the solid-state reaction in Fe-MoS2 self-lubricating composites for optimized tribological properties

Author

Lima, Gabriel Araujo de, Klein, Aloisio Nelmo, Pagnan Furlan, Kaline, Lima, Gabriel Araujo de, Klein, Aloisio Nelmo, and Pagnan Furlan, Kaline

Abstract

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 × 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., Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil

Published
2022
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48. Controlling the Solid-State Reaction in Fe-MoS 2 Self-Lubricating Composites for Optimized Tribological Properties.

Author

De Lima, Gabriel Araujo, Klein, Aloisio Nelmo, and Furlan, Kaline Pagnan

Subjects
MECHANICAL wear, DRY friction, GRAPHITE composites, ATMOSPHERIC nitrogen, IRON powder, GRAPHITE, SLIDING wear, POWDER metallurgy
Abstract

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 × 10−6 mm3·N−1·m−1) were achieved. [ABSTRACT FROM AUTHOR]

Published
2022
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