Journal
SURFACE ENGINEERING
Volume 27, Issue 1, Pages 57-60Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/026708410X12550773058108
Keywords
Heat treatment; Electroless Ni-P coating; Dehydrogenation; Passivation
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In this paper, post-treatments, including dehydrogenation process and passivation process for electroless Ni-P coating, are discussed. Porosity test and potentiodynamic polarisation curves were used to evaluate the porosity and corrosion resistance of electroless Ni-P coatings. The results indicated that the ideal dehydrogenation heat treatment temperature is 180-200 degrees C. The passivation process can further increase the corrosion resistance of electroless Ni-P coating. Both dehydrogenation process and passivation process are essential to obtain compact, corrosion resistant electroless Ni-P coating.
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