The tribological properties of electroless Ni–P/BN (h) composite coatings

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Hsu Chih I

National Chung-Shan Institute of Science and Technology, Taiwan

: J Nanomater Mol Nanotechnol

Abstract

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Electroless Ni–P coating has excellent mechanical properties which widely used in the petrochemical, computer, electronic machinery, automotive, printing, food and aerospace and other fields. The surface modification technology can strengthen material to achieve corrosion resistance, abrasion resistance, heat resistance, and prolong the service life of the material. It has found that the self-lubricating and wear resistance of electroless Ni-P coatings can be improved by the functional particles codeposition. In recent years, countries all over the world have successively invested in research and development. In this study, hexagonal boron nitride (BN(h)) micro particles through electroless deposition process has successfully co-deposited in Ni–P alloy coating. The particle contents present is 14.6 vol. % in electroless Ni–P/BN(h) composite coatings that will be analyzed include surface morphology, microstructure, hardness and tribological behavior. The micro morphology of coating was observed by Scanning electron microscopy(SEM), X-ray diffraction(XRD) to analyze crystalline phase. The tribological behavior of the coatings was investigated using a ball-on-disk wear tester that loaded at 6N. The results show that BN(h) particles co-deposited in Ni–P alloy coating can effectively reduce coefficient of friction to 0.18, and improve wear resistance 29 times for iron substrate.

Biography

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