Abstract
It is still a matter to get thick self-lubricating coating with good tribological properties and strong bond. In the present work, Cu/BN coating was produced by electrospark deposition on mild steel. Chemical compatibility of Cu/BN/steel was analysed. The effects of the electric capacitance and deposition time on coating performance were studied, and the microscopic morphologies and structure of the coating were analysed. The results showed that there were no reactions in Cu/BN/steel. With the increase in capacitance, the surface roughness, friction coefficient and wear mass loss all increased. With the increase in deposition time, the surface roughness increased. Scanning electron microscope images showed that the lubricating coating is smooth, and thick coating (∼100 μm) was formed with metallurgical bond.
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