Sliding Wear and Friction Properties of Al-Graphene Composites under Oil Lubrication

Şenel M. C., Gürbüz M.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1007/s11665-024-10164-8
  • Dergi Adı: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

In this work, Al-graphene composites were fabricated using the powder metallurgy route. This technique includes ultrasonic stirring, mechanical stirring, ball milling, filtering, drying, pressing, and heat-treatment. The influence of graphene amount (0.1-0.5 wt.%) on the microstructural, mechanical, and tribological behavior under oil lubrication was examined. The highest density (2.52 g/cm3), tensile stress (119 MPa), and hardness (57 HV) were obtained at Al-0.1% graphene composite. The minimum mass loss (0.2 mg) and wear rate (1.57 x 10-5 mm3/(Nm)) were detected at Al-0.1% graphene for a 10 N load under oily conditions. Also, a minimum friction coefficient (0.018) was obtained in Al-0.5% GNPs under oily conditions. As a result of the tests carried out, graphene addition enhances the wear resistance and mechanical strength of the composites up to 0.1 wt.% content. After 0.1% graphene amount, the properties of the specimens deteriorated on account of the accumulation of graphene.