Fabrication and properties evaluation of functionally graded Ni-NCZ composite coating
| Autor: | Sasan Yazdani, R. Arghavanian, B. Bostani, N Parvini Ahmadi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Fabrication Composite number 02 engineering and technology Surfaces and Interfaces General Chemistry engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Indentation hardness Surfaces Coatings and Films Corrosion Coating Phase (matter) Plating 0103 physical sciences Materials Chemistry engineering Composite material 0210 nano-technology Electroplating |
| Zdroj: | Surface and Coatings Technology. 328:276-282 |
| ISSN: | 0257-8972 |
| Popis: | Functionally graded Ni-ZrO2 (FGN-Z) and functionally graded Ni-NCZ (FGN-NCZ) composite coatings have been successfully co-electrodeposited from a bath containing variable concentrations of the particles. NCZ (electroless‑nickel coated ZrO2) particles were manufactured by dispersing of ZrO2 powder in an electroless-Ni plating bath. To produce functionally gradient composite coatings, ZrO2 and NCZ concentrations were continuously increased in the electroplating bath. With increasing of co-electrodeposited ZrO2 and NCZ particles content in Ni matrix, microhardness increases from interface towards the surface of the coating. The results showed that FGN-NCZ has higher wear resistance and corrosion resistance compared to FGN-Z. These were attributed to the higher amounts of co-electrodeposited second phase particles, stronger bonds between matrix and second phase particles and larger amounts of microhardness achieved for FGN-NCZ with respect to FGN-Z. |
| Databáze: | OpenAIRE |
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