Metals (Oct 2023)

Investigation of the Lubrication Performance of γ-Al<sub>2</sub>O<sub>3</sub>/ZnO Hybrid Nanofluids for Titanium Alloy

  • Ye Yang,
  • Hao Luan,
  • Fengbin Liu,
  • Lina Si,
  • Hongjuan Yan,
  • Chenhui Zhang

DOI
https://doi.org/10.3390/met13101701
Journal volume & issue
Vol. 13, no. 10
p. 1701

Abstract

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Titanium alloys are difficult to machine and have poor tribological properties. This paper investigates the lubricating performance of γ-Al2O3/ZnO hybrid nanofluids for Ti-6Al-4V. Pure and hybrid nanofluids are compared, and the effects of γ-Al2O3/ZnO ratios are studied. The results show that γ-Al2O3/ZnO hybrid nanofluids outperform pure nanofluids in terms of lower friction coefficients and better surface quality. Moreover, the hybrid nanofluid with a mass ratio of Al2O3 to ZnO of 2:1 demonstrates the best lubrication performance with a reduced friction coefficient of up to 22.1% compared to the base solution, resulting in improved surface quality. Al2O3 nanoparticles can adhere to the surface of ZnO nanoparticles and work as a coating, which further enhances the lubrication performance of the water-based nanofluid.

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