Deposition Mechanism and Wear Resistance Nano Ni-Al₂O₃ Composite Coatings

Abstract:

Nano Ni-Al₂O₃ composite coatings were prepared on pure copper substrate. The surface morphology and distribution of nano-particles of coatings were observed by SEM, the components of the coatings analyzed by X-ray diffractometer, and the microhardness of coatings tested by HXD-1000 microhardness tester. The microstructure of nano Ni-Al₂O₃ composite coating was different from that of the electrodeposited nickel coatings. The inserted Al₂O₃ particle can effectively hinder the growth of crystals. The microhardness of composite coatings around the inserted particles was much higher than that of electrodeposited nickel coatings. The more the size of Al₂O₃ decreased, the more the microhardness and wear resistance of the composite coatings increased.

• Periodical: Applied Mechanics and Materials (Volume 281)
• Pages: 409-412
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.281.409
• Online since: January 2013
• Authors: Dong Mei Jiang, Ying Shen, Wei Jun Zhang, Tie Jun Liu
• Keywords: Composite Coating, Microhardness, Nano Ni-Al₂О₃, Wear Resistance

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