PVD Ce-coating to mitigate intergranular oxidation of additively manufactured Ni-base alloy IN625
Source abstract
Abstract
Abstract Additively manufactured Ni-base alloy IN625 suffered from intergranular oxidation (IGO) during air exposure at 900 °C. IGO is triggered by oxide buckling over the alloy’s grain boundaries (GBs), followed by oxidation of the open intergranular voids. Application of a 10 nm thick PVD coating of Ce induced a slower inward growth of the Cr2O3 scale, better oxide adherence and as a result strongly suppressed IGO. The main beneficial effect provided by Ce is improved oxide adherence preventing oxide buckling and oxidation of intergranular voids.
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OpenAlex topics: Additive Manufacturing Materials and Processes · High-Temperature Coating Behaviors · Advanced materials and composites
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References (78)
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