微观结构和传统造与年轮激光覆盖巴比特合金层的性能,用于滑动轴承
Jing Jin1,2, Jun Ye1,3, Hao Xue4
1School of Mechanical Engineering, Tianjin University, Tianjin 300072, China.
Micromachines
|January 28, 2026
概括
圆形同轴激光外显著改善了用于滑动轴承的基巴比特合金层. 这种先进的技术完善了微观结构,提高了硬度和三角学性能,以获得更好的耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 部落学 (tribology) 是一个学科.
背景情况:
- 滑动轴承合金层需要卓越的三元学性能和金结合.
- 对于巴比特合金的传统造方法通常会导致粗粒,化学分离和界面粘附性差.
- 圆形同轴激光线料外提供了改善热量输入和快速固化的潜力,但其应用于基巴比特合金的应用需要进一步研究.
研究的目的:
- 为了比较通过常规造和环状同轴激光线料覆盖产生的巴比特层.
- 为了评估激光覆盖对微观结构,相构成,硬度和tribological行为的影响.
- 为了证明环状同轴激光外在制造高性能巴比特轴承层中的潜力.
主要方法:
- 使用常规造制造巴比特层.
- 使用环状同轴激光线料覆盖物制造巴比特层.
- 两种方法的微观结构,相构成,硬度和tribological性能的表征.
主要成果:
- 激光覆盖产生了连续的,密集的,并且结合良好的巴比特涂层.
- 激光覆盖完善了SnSb阶段,将粒径从~100μm减少到10-20μm.
- 硬度从25.3 HB增加到27.6 HB,摩擦系数减少了38.19%,磨损体积减少了10.46%.
结论:
- 圆形同轴激光板有效地减轻了巴比特合金传统造的缺陷.
- 这些改进归因于快速固化,低稀释和均的相位分布.
- 激光覆盖显示出生产优质锡基巴比特轴承层的巨大潜力.
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