Article ID Journal Published Year Pages File Type
1471589 Corrosion Science 2008 9 Pages PDF
Abstract

The influence of salt spray corrosion on subsequent oxidation behaviours of arc ion plated (AIP) NiCoCrAlYSiB coatings is investigated in this work. The results indicate impact of the salt spray corrosion on successive oxidation behaviour depends greatly on the degree of the previous corrosion attack. Accelerated oxidation kinetics and unsatisfactory oxide morphologies are observed on the as-deposited and as-annealed NiCoCrAlYSiB coatings that suffered serious salt spray attacks. Pre-oxidised coatings prove excellent performances during both salt spray tests and the subsequent oxidations. The mechanism of the corrosion attack influencing the isothermal oxidation behaviour is discussed.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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