Tribological behavior of epoxy nanocomposites under corrosive environment: effect of high-performance boron nitride nanoplatelet

Year 2023, Volume: 41 Issue: 2, 385 - 395, 30.04.2023

Emine Feyza Şükür Halil Burak Kaybal Hasan Ulus Ahmet Avcı

Abstract

This paper sheds light on the impact of corrosive service conditions on the mechanical and tribological performances of epoxy nanocomposites containing 0.5 wt.% hexagonal boron ni-tride (BN) nanoplatelets as fillers. The composite samples were aged in 10 wt% H2SO4 solu-tions by immersion for 504 hours. Variation in mechanical and tribological behaviors during immersion was investigated using tensile and ball-on disk tests. The ball-on disk tests were performed at room temperature under a 10 N constant load and 0.8 m/s speed for 3000 sec-onds. The high-performance BN nanoplatelets improved neat Epoxy’s tensile strength, tough-ness, and wear performance by 17%, 27%, and 56%, respectively. The aging results revealed that H2SO4 exposure deteriorates the mechanical performance of all epoxy composite samples, even though BN/Epoxy nanocomposites exhibited better resistance to the corrosive environ-ment. In contrast, the tribological performance increased with the acidic solution exposure that acts as a lubricant and forms a corrosive protective layer after the immersion of 504 hours

Keywords

Corrosive Environment, Ball-On Disk, Epoxy, Hexagonal Boron Nitride, Sulphuric Acid, Wear

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