Effects of Content of Al2O3 Particles and Heat Treatment on Corrosion Resistance of Ni-P-Al2O3 Composite Coatings

Abstract:

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Ni-P-Al2O3 composite coatings with the uniform distribution of Al2O3 particles were prepared by adding Al2O3 particles into Ni-P plating solution and adopting optimum plating process. The morphology and microstructure of the coatings were investigated by using SEM, EDS and XRD. Being immersed in 10 vol.% H2SO4 solutions, the corrosion resistance of Ni-P-Al2O3 composite coatings was tested. The results show that when the solubility of Al2O3 particles in plating solution is 8 g/l, the corrosion resistance is best. Comparing with as-plated Ni-P-Al2O3 composite coatings, the corrosion resistance of heat-treated Ni-P-Al2O3 composite coatings decreases by raising the temperature to 300°C and then increases by raising the temperature to 450°C.

Info:

Periodical:

Advanced Materials Research (Volumes 105-106)

Edited by:

Wei Pan and Jianghong Gong

Pages:

441-443

DOI:

10.4028/www.scientific.net/AMR.105-106.441

Citation:

J. H. Lu et al., "Effects of Content of Al2O3 Particles and Heat Treatment on Corrosion Resistance of Ni-P-Al2O3 Composite Coatings", Advanced Materials Research, Vols. 105-106, pp. 441-443, 2010

Online since:

April 2010

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Price:

$35.00

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