Improvement of the tribological properties of iron-based self-lubricating composites by modification of the sintering atmosphere

Publikationstyp
Journal Article
Date Issued
2025-03-15
Sprache
English
Author(s)
Lima, Gabriel Araujo de  
Zimmermann De Assunção, Julia
Klein, Aloisio Nelmo  
Pagnan Furlan, Kaline  orcid-logo
Integrated Ceramic-based Materials Systems M-EXK3  
TORE-URI
https://hdl.handle.net/11420/55316
Journal
Funtai-oyobi-funmatsu-yakin = Journal of the Japan Society of Powder and Powder Metallurgy  
Volume
72
Start Page
S47
End Page
S53
Citation
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 72: S47-53 (2025)
Publisher DOI
10.2497/jjspm.14A-T2-09
Scopus ID
2-s2.0-105001538233
Publisher
Kyōkai
In this work, powder compaction and solid-state sintering are employed to fabricate iron-based self-lubricating composites containing MoS2 and graphite. Previous studies have shown that MoS2 reacts with iron matrices during sintering, making the production of Fe-MoS2 composites challenging. We hereby demonstrate that a modification in the sintering atmosphere improves the composites' tribological properties due to a synergic effect of retardation of the solid-state reaction and increase of the matrix microhardness related to the nitrogen intake. The composites sintered in a mixed Ar/H2/N2 atmosphere exhibited, on average, a lower dry coefficient of friction compared to those sintered in Ar/H2.
Subjects
molybdenum disulfide | self-lubricating composites | sintering | solid lubricants
DDC Class
600: Technology