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<p>This study explored the application effects of nano-sized aluminum nitride (AlN) particles as lubricant additives in the field of friction and wear. Through a four-ball friction and wear test conducted under specific operating conditions (392 N, 1200 r/min, and 30&#xa0;min), it was found that lubricating oil with a nano-sized AlN concentration of 0.5wt% exhibited the best tribological performance. At this concentration, the average friction coefficient and wear scar diameter of the steel ball with lubricating oil were reduced to 0.053 and 0.51&#xa0;mm, respectively, representing a decrease of 33.75% and 21.5% compared to the base oil. Moreover, the friction coefficient curve was more stable. Additionally, when the glass fiber-reinforced plastics composite (GFRP) is lubricated with oil containing 0.5wt% nano-sized aluminum nitride particles, its friction coefficient is significantly reduced to 0.13, which is a 24% reduction compared to the base oil, indicating a significant improvement in friction and wear properties. These excellent properties are attributed to the "micro-bearing" effect of nano-sized AlN particles, which effectively converts sliding friction into sliding-rolling friction, significantly reducing scratches and wear between friction pairs. This study not only confirms the significant application potential of nano-sized AlN particles in tribology, but also provides new insights for enhancing the performance of lubricants and composite materials.</p>

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Effect of AlN Concentrations in Lubricating Oil on the Tribological Properties of GFRP

  • 期刊论文

  • 发表日期：

    2025年3月8日

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  • Sang Xiong,
  • Chenyi Yan,
  • Xinhao Xie,
  • Xiaoxuan Lin

摘要

This study explored the application effects of nano-sized aluminum nitride (AlN) particles as lubricant additives in the field of friction and wear. Through a four-ball friction and wear test conducted under specific operating conditions (392 N, 1200 r/min, and 30 min), it was found that lubricating oil with a nano-sized AlN concentration of 0.5wt% exhibited the best tribological performance. At this concentration, the average friction coefficient and wear scar diameter of the steel ball with lubricating oil were reduced to 0.053 and 0.51 mm, respectively, representing a decrease of 33.75% and 21.5% compared to the base oil. Moreover, the friction coefficient curve was more stable. Additionally, when the glass fiber-reinforced plastics composite (GFRP) is lubricated with oil containing 0.5wt% nano-sized aluminum nitride particles, its friction coefficient is significantly reduced to 0.13, which is a 24% reduction compared to the base oil, indicating a significant improvement in friction and wear properties. These excellent properties are attributed to the "micro-bearing" effect of nano-sized AlN particles, which effectively converts sliding friction into sliding-rolling friction, significantly reducing scratches and wear between friction pairs. This study not only confirms the significant application potential of nano-sized AlN particles in tribology, but also provides new insights for enhancing the performance of lubricants and composite materials.