Hw. Wang et Mm. Stack, CORROSION OF PVD TIN COATINGS UNDER SIMULTANEOUS EROSION IN SODIUM-CARBONATE BICARBONATE BUFFERED SLURRIES, Surface & coatings technology, 105(1-2), 1998, pp. 141-146
The aqueous corrosion resistance of mild steel (BS6323) in the presenc
e and absence of PVD TiN coatings was studied potentiodynamically in a
rotating cylinder electrode system, in comparison with that of AISI 3
04 stainless steel, in an alkaline buffer slurry solution of sodium ca
rbonate and bicarbonate containing 150 mu m alumina particles at a vel
ocity up to 8 m/s. Weight loss of the samples resulted due to the acti
on of both wear and corrosion. This paper summarises the preliminary r
esults for studies of corrosion of the coated and uncoated samples. In
addition. the weight loss due to corrosion under conditions of simult
aneous erosion-corrosion was obtained from the current response using
Faraday's law. The significant resistance to corrosion and the outstan
ding stability of the corrosion resistance with the increases of parti
cle velocity accounted for the excellent corrosion performance of the
TiN coatings over that of AISI 304 stainless steel or the mild steel.
(C) 1998 Elsevier Science S.A.