Phase Structure and Thermodynamic Stability of Various Nickel-Base Multicomponent Alloy Coating

Abstract:

Nickel base multi-component alloy Ni-PNi-Cu-PNi-W-P and Ni-Co-P were prepared using electroless plating methodand examined by scanning electronic microscope, x-ray diffractometer and x-ray flourometer respectively on its morphology, component and structure characteristic. Thermodynamic stability of the three samples were also examined by thermal analysis method. Research revealed all three coatings possessed compact and tight surface structure with excellent thermodynamic stability. Also, it was more efficient to enhance the thermodynamic stability of the Ni-P alloy coating by adding atom Cu rather than atom Co or atom W. While Ni-W-P coating demonstrated a microcrystalline structure, both Ni-Co-P and Ni-Cu-P were amorphously structured. After thermal treatment three alloy coatings all experienced transformation from non-crystalline or microcrystalline state to a more stable crystalline state, XDR analysis indicated the reaction products were unit cells and inter metallic compounds of Ni₃P.

• Periodical: Applied Mechanics and Materials (Volumes 457-458)
• Pages: 252-256
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.457-458.252
• Online since: October 2013
• Authors: Hua Sun*, Hong Fang Ma, Li Ming Feng, Xiao Fei Guo
• Keywords: Electroless Plating, Multicomponent Alloy, Non-Crystalline Structure, Thermodynamic Stability

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