Copper-based Self-lubricating Materials and Relevant Tribological Properties

DU Ping, ZHANG Wei, LIU Zhi-lan, LIN Li, ZHANG Xiang-jun, ZHOU Peng-fei

Surface Technology ›› 2018, Vol. 47 ›› Issue (6) : 210-217.

PDF(3835 KB)
PDF(3835 KB)
Surface Technology ›› 2018, Vol. 47 ›› Issue (6) : 210-217. DOI: 10.16490/j.cnki.issn.1001-3660.2018.06.030
Surface Friction Wear and Lubrication

Copper-based Self-lubricating Materials and Relevant Tribological Properties

  • DU Ping1, ZHANG Wei1, LIU Zhi-lan1, LIN Li2, ZHANG Xiang-jun2, ZHOU Peng-fei2
Author information +
History +

Abstract

The work aims to choose the best wear plate material by comparing various properties of copper-based graphite composite (SY-01) and copper-based PTFE composite (SY-02). Microstructure and chemical composition of the coatings were evaluated with environmental scanning electron microscope (ESEM) and supporting energy dispersive spectroscopy (EDS). Pore distribution and porosity value were analyzed and tested in pressure mercury method. Micro-hardness and impact resistance were analyzed with numerous devices and in various methods. In addition, tribological properties of the two wear-resistant layers were tested with SRV-4 high-temperature friction and wear tester. The porosity of SY-01 sample was 28.04% while that of SY-02 sample was 7.43%. The average microhardness of SY-01 was 52.75HV0.5 and the distribution was more uniform. However, microhardness of the mixed area was nearly 32HV0.5. Under the same friction conditions, depth of wear scar of SY-01 sample was 3.50 μm, and that of SY-02 sample was 11.0 μm, which was about 3 times that of SY-01 sample. The microhardness, impact resistance and tribological properties of SY-01 wear-resistant layer are all superior to those of SY-02 wear-resistant layer. Friction-wear mechanism of SY-01 wear-resistant layer involves abrasive wear and adhesive wear, while that of SY-02 wear-resistant layer mainly involves abrasive wear.

Key words

copper-based self-lubricating materials; graphite; PTFE; microstructure; mechanical properties; tribological properties

Cite this article

Download Citations
DU Ping, ZHANG Wei, LIU Zhi-lan, LIN Li, ZHANG Xiang-jun, ZHOU Peng-fei. Copper-based Self-lubricating Materials and Relevant Tribological Properties[J]. Surface Technology. 2018, 47(6): 210-217
PDF(3835 KB)

Accesses

Citation

Detail

Sections
Recommended

/