High Temperature Oxidation Studies of Al Coating Deposited by Magnetron Sputtering

Abstract:

Al coating was deposited on 0Cr18Ni10Ti steel by magnetron sputtering, and then diffusing annealing at 950°C for 2h. The isothermal oxidation behaviors of the Al coating and 0Cr18Ni10Ti steel were tested at 900 °C for 24 h and 800 °C for 24 h using Thermo gravimetric analyzer. The morphology was studied by SEM, the phase composition was characterized by EDS. The result of isothermal oxidation test showed that isothermal oxidation resistance of Al coated steel is better than 0Cr18Ni10Ti steel at 900 °Cand 800 °C, due to continuous and compact Al₂O₃ scales. Al clusters of particles appears on Al coated steel during deposition. The larger particles peeling off was observed at 900°C after 18h, due to thermal and growth stresses, while no spallation appeared at 800°C for 24h.

• Periodical: Applied Mechanics and Materials (Volume 665)
• Pages: 63-67
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.665.63
• Online since: October 2014
• Authors: Jin Lou, Cheng Xiang Ruan
• Keywords: 0Cr18Ni10Ti Steel, Al Coating, High Temperature Oxidation Resistance, Magnetron Sputtering

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