Preparation and Properties of Electroless Ni-P-β-SiC Composition Coating

Abstract:

Through orthogonal test of Ni-P chemical plating process optimization to determine the optimum process recipe, the Ni-P-β-SiC composite coating were prepared by chemical plating method. The deposition rate, microhardness, composition and organization of Ni-P-β-SiC composite coating are observed and analyzed by scanning electron microscopy (SEM), vivtorinox microhardness tester, X ray diffraction (XRD) and energy spectrum analysis (EDS). The influences of β-SiC particle concentration in bath on the solution of composite coating deposition rate and microhardness. The results show that the influence of composite coating deposition rate and microhardness are NiSO₄•6H₂O, NaH₂PO₂•H₂O, C₃H₆O₃, and PH. The optimum process conditions: NiSO₄•6H₂O 25 g/L, NaH₂PO₂•H₂O 27 g/L, C₃H₆O₃ 27 ml/L, PH 5.2. It was found that the Ni-P-β-SiC composite coating with 5g/L β-SiC particles exhibited a maximum deposition rate and microhardness, the deposition rate of composite coating is 12.32μm/h, microhardness is 567.93HV_0.05.

• Periodical: Materials Science Forum (Volumes 809-810)
• Pages: 621-626
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.809-810.621
• Online since: December 2014
• Authors: Xiao Meng Zhang, Li Bin Niu*, Xiao Cui Wei, Xiao Gang Wang, Xiao Hu Hua
• Keywords: Deposition Rate, Electroless Coating, Micro-Hardness, Ni-P-β-SiC Composite Coating, Process Conditions

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