Microstructure and Tribological Properties of Ni-Co/SiC Coatings Prepared by Occlusion Electroplating for Grinding Tools

Abstract:

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In order to improve the grinding performance and service life of electroplating composite coatings with high percent of hard abrasives, the composite coatings of Ni-Co/SiC were prepared by occlusion electroplating technology and their microstructure and tribological properties were studied. The research results show that the cathodal electric-current density in occlusion electroplating process and the SiC abrasive size have great influence on microstructure and tribological properties of Ni-Co/SiC coatings. The optimum value of cathodal electric-current density is 1 A/dm2 and the proper SiC abrasive size is about 20 μm, in which the Ni-Co/SiC coatings have excellent wear resistance and high grinding ability. The main wear mechanisms of Ni-Co/SiC coatings are micro-cutting and adhesive wear of matrix alloy, and micro-cracking wear and spalling of SiC abrasives.

Info:

Periodical:

Edited by:

Shengyi Li, Yingchun Liu, Rongbo Zhu, Hongguang Li, Wensi Ding

Pages:

1457-1461

DOI:

10.4028/www.scientific.net/AMM.34-35.1457

Citation:

Y. F. Tan et al., "Microstructure and Tribological Properties of Ni-Co/SiC Coatings Prepared by Occlusion Electroplating for Grinding Tools", Applied Mechanics and Materials, Vols. 34-35, pp. 1457-1461, 2010

Online since:

October 2010

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Price:

$35.00

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