Journal
SURFACE & COATINGS TECHNOLOGY
Volume 161, Issue 2-3, Pages 257-266Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0257-8972(02)00515-7
Keywords
corrosion; coated steels; sputtering; carbon steel; high speed steel; chromium steel
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The electrochemical corrosion behaviour of WTiN coatings, of composition W 31, Ti 28 and N 40 at.% sputtered on carbon steel, chromium steel and high speed steel (HSS) has been investigated and the effect of the steel heat treatment on the steel/WTiN system performance explored. Open circuit potential measurements, polarisation curves and electrochemical impedance spectroscopy were used, together with X-ray diffraction and scanning electron microscopy to characterise the corroded and uncorroded coating/ substrate systems. It was found that the influence of the substrate on corrosion resistance follows the order Carbon Steel
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