Alumina Influence on the Corrosion Resistance of Ni-PAl2O3 Composite Layers
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Dată
2015Autor
Radu, Tamara
Abstract
This paper aims to analyze the corrosion resistance of composite layers based
on Ni-P matrix and disperse phase alumina of 10 μm size, present in amounts of 5,
10 and 20 g / L in the nickel plating bath. The influence of alumina on the corrosion
resistance of Ni-P-Al2O3 composite layers was tested in 0.1N hydrochloric acid
solution compared to Ni-P layers with different phosphorus contents. The samples
immersed in the corrosive environment were weighed every 7 days for 4 weeks. The
corrosion rate was appreciated considering the loss of mass per area in time. Mass
loss was calculated considering the total time of corrosion and the mass lost each
week for determining the kinetics of the process. The variation curves of the
corrosion rate are presented, depending on the chemical composition of the
analyzed layers and the corrosion time.
Colecții
- 2015 fascicula9 nr3 [10]