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- Title
High-Temperature Corrosion of AlCrSiN Film in Ar-1%SO<sub>2</sub> Gas.
- Authors
Yadav, Poonam; Dong Bok Lee; Yue Lin; Shihong Zhang; Sik Chol Kwon
- Abstract
AlCrSiN film with a composition of 29.1Al-17.1Cr-2.1Si-51.7N in at. % was deposited on a steel substrate by cathodic arc ion plating at a thickness of 1.8 μm. It consisted of nanocrystalline hcp-AlN and fcc-CrN, where a small amount of Si was dissolved. Corrosion tests were carried out at 800 °C for 5-200 h in Ar-1%SO2 gas. The major corrosion reaction was oxidation owing to the high oxygen affinity of Al and Cr in the film. The formed oxide scale consisted primarily of (Al,Cr)2O3, within which Fe, Si, and S were dissolved. Even after corrosion for 200 h, the thickness of the scale was about 0.7-1.2 μm, indicating that the film had good corrosion resistance in the SO2-containing atmosphere.
- Subjects
ION plating; NANOCRYSTALS manufacturing; CORROSION &; anti-corrosives testing
- Publication
Coatings (2079-6412), 2017, Vol 7, Issue 3, p44
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings7030044