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| High-temperature Anti-oxidation Behavior of Pt Modified Aluminide Coating |
| Received:February 12, 2016 Revised:June 15, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2016.03.012 |
| KeyWord:Pt modified aluminide coating CVD oxidation kinetics |
| Author | Institution |
| WANG Zhan-kao |
Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing , China |
| XU Zhen-hua |
Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing , China |
| DAI Jian-wei |
Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing , China |
| MU Ren-de |
Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing , China |
| HE Li-min |
Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing , China |
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| Abstract: |
| Objective To investigate the anti-oxidation behavior of Pt modified aluminide (Pt-Al) coatings at 1100 ℃. Methods Pt modified aluminide (Pt-Al) coatings were fabricated by chemical vapor deposition (CVD) on the single crystal superalloy substrates .The phase structures, morphologies and composition of the Pt-Al coatings after oxidation were analyzed by XRD, SEM and EDS in detail. Results The results indicated that the oxidation kinetics curves of the coatings were in accordance with parabolic rule after oxidation at 1100 ℃ for 250 h. The performance of oxidation resistance of the single crystal superalloy was more significantly improved by the deposition of Pt-Al coatings than Al coatings. The oxide scales on top of the coatings’ surface peeled off after 150 h oxidation, meanwhile, "cunculus" occurred inside the coating. Conclusion Pt-Al coating largely improved the oxidation resistance of the substrates at high temperatures. |
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