通过选择性激光熔融和浸润技术制造仿生表面纹理自润滑 60NiTi 合金及其摩擦学特性

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-11-05 DOI:10.1016/j.triboint.2024.110364

Xiaofei Yan , Hua Yan , Peilei Zhang , Qinghua Lu , Haichuan Shi

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引用次数: 0

摘要

60NiTi 合金具有弹性模量低、密度小、无磁性、润滑性好等特点，被认为是第四代新型航空轴承材料。本文采用选择性激光熔融（SLM）和高温熔渗（HTFI）技术制备了 60NiTi 仿生物表面纹理自润滑复合材料。研究了不同缝隙宽度（NTD）、边缘长度（NTA）和软金属锡铅汞（SPA）浸润对其摩擦学性能的影响。结果表明，具有中等纹理密度（ρ = 16 %）的 NTA-SPA 结构样品促进了润滑剂相向摩擦表面的扩散，形成了完整的润滑膜。COF 稳定在 0.2，磨损率降至 0.56 × 10-3 mm3/Nm，与 NTD-SPA 样品相比，自润滑效果更加稳定。

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Fabrication and tribological properties of bionic surface texture self-lubricating 60NiTi alloy via selective laser melting and infiltration

Due to its low elastic modulus, low density, non-magnetic and good lubricity, 60NiTi alloy is considered a novel fourth-generation aerospace bearing material. In this paper, 60NiTi biomimetic surface textured self-lubricating composites were fabricated by selective laser melting (SLM) and high-temperature fusion infiltration (HTFI). The effects of different slit widths (NTD), edge lengths (NTA), and soft metal Sn-Pb-Ag (SPA) infiltration on its tribological properties were studied. The results show that the NTA-SPA structural samples with medium texture density (ρ = 16 %) promoted the diffusion of the lubricant phase to the friction surface, resulting in a complete lubricant film. The COF stabilized at 0.2, and the wear rate decreased to 0.56 × 10⁻³ mm³/Nm, providing a more stable self-lubrication effect compared to the NTD-SPA sample.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.