The efficacy of reinforcement of glass fibers and ZrO2 nanoparticles on the mechanical properties of autopolymerizing provisional restorations (PMMA)

Jamel, Raghad S.; AL-Murad, Maha A; Alkhalidi, Emad Farhan

doi:10.1016/j.sdentj.2023.05.029

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…Since atoms in the same atomic layer are bound by covalent bonds, a singlelayer structure is formed with high modulus and high strength, avoiding direct contact with the friction pair [7]. Several excellent studies about nano additives in lubricants are available, such as metal nanoparticles [6][7][8][9], carbon element nanoparticles [10,11], oxide nanoparticles [12,13], various inorganic compound nanoparticles [14,15], polymer nanoparticles [16,17] and composite nanoparticles [18,19], etc. Many researchers so far have focused on graphene additives.…”

Section: Introductionmentioning

confidence: 99%

Study on the Lubricating Characteristics of Graphene Lubricants

Dong,

Ma,

Xiong

et al. 2023

Lubricants

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Graphene is considered a good lubricant additive. The lubricating properties of graphene lubricant at different concentrations and temperatures are studied via a four-ball friction and wear-testing machine. The results show that the coefficient of friction (COF) and wear scar diameter (WSD) of the steel ball with 0.035 wt% graphene lubricant decreased by 40.8% and 50.4%, respectively. Finally, through surface analysis, the following lubrication mechanism is proposed: as the added graphene particles can easily fill and cover the pores of the friction surface, the contact pressure of the rough peak is reduced, resulting in a lower COF and smoother surface. Although the COF increases with temperature, graphene lubricants still exhibit good lubrication effects.

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