Influence of Boron Nitride on Tribological Behavior of Nickel-Base Composite Coatings at High Temperature

Abstract:

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The nickel-based boron nitride composite coatings were prepared by reversing pulse electro-deposition. The mechanical properties and friction behavior of the coatings at high temperature were tested by using Al2O3 ceramic ball at high temperature friction-testing machine. The results show that the surface micro-hardness of the coatings increases with the addition of BN powder. Meanwhile, the friction coefficient and wear rate of specimens decreases. Especially when the BN addition is 1.5g/L the composite coatings present a minimum of friction coefficient and wear rate. In optimum process parameters, the friction coefficient of the coatings is about 0.2 at room temperature and 0.4-0.5 at 600°C. In addition, the friction and wear properties were significantly improved by plating Ni transition layer plated between substrate and composite coating.

Info:

Periodical:

Edited by:

Yafang Han, Fusheng Pan, Jianmao Tang, Chungen Zhou

Pages:

711-715

DOI:

10.4028/www.scientific.net/MSF.686.711

Citation:

Y. K. Zhang et al., "Influence of Boron Nitride on Tribological Behavior of Nickel-Base Composite Coatings at High Temperature", Materials Science Forum, Vol. 686, pp. 711-715, 2011

Online since:

June 2011

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$35.00

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