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Effect of P Addition on the Thermal Stability of Nanocrystalline Ni-Co-Fe-P Coatings

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The thermal stability of nanocrystalline Ni-Co-Fe-P coatings with phosphorus content up to 3.38 wt% prepared by pulsed electrodepostion was studied using XRD, TEM and DSC. It is found that multi-component alloying does improve the thermal stability of nanocrystalline coatings due to a “solution drag effect”. For nanocrystalline Ni-40.41%Co-6.16%Fe-1.63%P coating, P-atoms segregate the grain boundaries during annealing which leads to a higher thermal stability. While due to the higher initial P-concentration in Ni-30.1%Co-2.15%Fe-3.38%P, saturation of P and precipitation occurs earlier leading to a slightly lower stability.
Cite this paper
Dai, P. and Lin, L. (2014) Effect of P Addition on the Thermal Stability of Nanocrystalline Ni-Co-Fe-P Coatings. Advances in Materials Physics and Chemistry, 4, 217-223. doi: 10.4236/ampc.2014.411025.
 

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http://dx.doi.org/10.1016/0001-6160(83)90104-9           eww141110lx
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