PVD Ce-coating to mitigate intergranular oxidation of additively manufactured Ni-base alloy IN625
Year: 2025
Type: article
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.
Source: npj Materials Degradation
Institutions: Chalmers University of Technology, Forschungszentrum Jülich
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,590
Awards: G1659176129, G2314803536
OpenAlex ID: W4414617978