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The Abrasive Effect of Moon and Mars Regolith Simulants on Stainless Steel Rotating Shaft and Polytetrafluoroethylene Sealing Material Pairs.
Kalácska, Gábor; Barkó, György; Shegawu, Hailemariam; Kalácska, Ádám; Zsidai, László; Keresztes, Róbert; Károly, Zoltán.
Afiliación
  • Kalácska G; Institute of Technology, Szent István Campus, Magyar Agrár- és Élettudományi Egyetem (MATE), Páter K. u. 1., H-2100 Gödöllo, Hungary.
  • Barkó G; Institute of Technology, Szent István Campus, Magyar Agrár- és Élettudományi Egyetem (MATE), Páter K. u. 1., H-2100 Gödöllo, Hungary.
  • Shegawu H; Mechanical Engineering Doctoral School, Magyar Agrár- és Élettudományi Egyetem (MATE), Páter K. u. 1., H-2100 Gödöllo, Hungary.
  • Kalácska Á; Laboratory Soete, Tech Lane Gent Science Park-Campus A, University of Gent, Technologiepark 131, B-9052 Gent, Belgium.
  • Zsidai L; Institute of Technology, Szent István Campus, Magyar Agrár- és Élettudományi Egyetem (MATE), Páter K. u. 1., H-2100 Gödöllo, Hungary.
  • Keresztes R; Institute of Technology, Szent István Campus, Magyar Agrár- és Élettudományi Egyetem (MATE), Páter K. u. 1., H-2100 Gödöllo, Hungary.
  • Károly Z; HUN-REN Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar Tudósok Krt. 2, H-1117 Budapest, Hungary.
Materials (Basel) ; 17(17)2024 Aug 27.
Article en En | MEDLINE | ID: mdl-39274631
ABSTRACT
For space missions to either the Moon or Mars, protecting mechanical moving parts from the abrasive effects of prevailing surface dust is crucial. This paper compares the abrasive effects of two lunar and two Martian simulant regoliths using special pin-on-disc tests on a stainless steel/polytetrafluoroethylene (PTFE) sealing material pair. Due to the regolith particles entering the contact zone, a three-body abrasion mechanism took place. We found that friction coefficients stabilised between 0.2 and 0.4 for all simulants. Wear curves, surface roughness measurements, and microscopic images all suggest a significantly lower abrasion effect of the Martian regoliths than that of the lunar ones. It applies not only to steel surfaces but also to the PTFE pins. The dominant abrasive micro-mechanism of the disc surface is micro-ploughing in the case of all tests, while the transformation of the counterface is mixed. The surface of pin material is plastically transformed through micro-ploughing, while the material is removed through micro-cutting due to the slide over hard soil particles.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Hungria Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Hungria Pais de publicación: Suiza