Scholarlink

<p>Friction and wear are the main factors limiting the reliability and service life of electrical contact materials and equipment. To address this issue, this study proposes an innovative solution that leverages the synergistic effect of nanomaterials. A composite structure consisting of graphene nanosheets (GNSs) and silver nanospheres (SNS) was successfully constructed through in situ reduction. This structure integrated the synergistic friction-reducing mechanisms of rolling elements and nanosheet layers. The conductivity of LP108/0.15&#xa0;wt% SNS–GNSs-20 was increased by 11 times compared with that of the pure ionic. The LP108/0.20&#xa0;wt% SNS–GNSs-5 compound lubricant demonstrated excellent friction-reducing effects without current. The average coefficient of friction was decreased to 0.07003, and the wear volume was significantly reduced by 92.62%. As for the current-applied conditions, the tribological properties of this composite lubricant are further improved, with the COF reduced to 0.06866 and the wear volume reduced by 90.93%. This phenomenon was attributed to the synergistic effects of the “rolling ball” mechanism of spherical materials and the “nanosheet slip” of 2D materials. The nanocomposites facilitated filling, rolling, and self-repairing processes on the metal wear scars, thereby significantly reducing friction and wear. The results highlight the considerable potential of novel SNS–GNSs nanocomposites as lubricant additives in electronically controlled friction applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Advanced tribological solutions for electrical contacts: graphene nanosheet-silver nanosphere hybrid lubricants

  • 期刊论文

  • 发表日期：

    2025年8月11日

查看全文
  • Guoliang Zhang,
  • Junting Dong,
  • Chunying Liu,
  • Duo Yang,
  • Yang Li

摘要

Friction and wear are the main factors limiting the reliability and service life of electrical contact materials and equipment. To address this issue, this study proposes an innovative solution that leverages the synergistic effect of nanomaterials. A composite structure consisting of graphene nanosheets (GNSs) and silver nanospheres (SNS) was successfully constructed through in situ reduction. This structure integrated the synergistic friction-reducing mechanisms of rolling elements and nanosheet layers. The conductivity of LP108/0.15 wt% SNS–GNSs-20 was increased by 11 times compared with that of the pure ionic. The LP108/0.20 wt% SNS–GNSs-5 compound lubricant demonstrated excellent friction-reducing effects without current. The average coefficient of friction was decreased to 0.07003, and the wear volume was significantly reduced by 92.62%. As for the current-applied conditions, the tribological properties of this composite lubricant are further improved, with the COF reduced to 0.06866 and the wear volume reduced by 90.93%. This phenomenon was attributed to the synergistic effects of the “rolling ball” mechanism of spherical materials and the “nanosheet slip” of 2D materials. The nanocomposites facilitated filling, rolling, and self-repairing processes on the metal wear scars, thereby significantly reducing friction and wear. The results highlight the considerable potential of novel SNS–GNSs nanocomposites as lubricant additives in electronically controlled friction applications.