| 铂改性铝化物涂层的高温防护性能研究 |
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| 引用本文： | 王占考,许振华,戴建伟,牟仁德,何利民.铂改性铝化物涂层的高温防护性能研究[J].装备环境工程,2016,13(3):76-81. |
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| 作者姓名： | 王占考 许振华 戴建伟 牟仁德 何利民 |
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| 作者单位： | 北京航空材料研究院 航空材料先进腐蚀与防护航空科技重点实验室,北京,100095 |
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| 摘 要： | 目的研究1100℃下铂改性铝化物(Pt-Al)涂层在空气中的高温氧化行为。方法采用化学气相沉积(CVD)方法在单晶高温合金基体上制备铂改性铝化物(Pt-Al)涂层,采用X-射线衍射(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)等方法分析Pt-Al涂层在高温氧化过程中相结构、显微组织和成分的演变规律。结果经1100℃氧化250 h后,Al涂层及Pt-Al涂层的氧化动力学曲线符合抛物线演变规律,Pt-Al涂层的涂覆对基体合金的抗高温氧化性能的提高要优于Al涂层;经过150 h氧化后涂层出现了氧化膜剥落现象,同时涂层内部也出现了"地道"现象。结论 Pt-Al涂层对基体高温抗氧化性能有积极效果。
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| 关 键 词： | 铂改性铝化物涂层 化学气相沉积 氧化动力学 |
| 收稿时间： | 2016/2/12 0:00:00 |
| 修稿时间： | 2016/6/15 0:00:00 |
High-temperature Anti-oxidation Behavior of Pt Modified Aluminide Coating |
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| WANG Zhan-kao,XU Zhen-hu,DAI Jian-wei,MU Ren-de and HE Li-min.High-temperature Anti-oxidation Behavior of Pt Modified Aluminide Coating[J].Equipment Environmental Engineering,2016,13(3):76-81. |
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| Authors: | WANG Zhan-kao XU Zhen-hu DAI Jian-wei MU Ren-de and HE Li-min |
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| Institution: | Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing 100095, China,Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing 100095, China,Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing 100095, China,Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing 100095, China and Beijing Institute of Aeronautical Material, Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing 100095, China |
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| Abstract: | Objective To investigate the anti-oxidation behavior of Pt modified aluminide (Pt-Al) coatings at 1100℃.Me-thods Pt modified aluminide (Pt-Al) coatings were fabricated by chemical vapor deposition (CVD) on the single crystal supe-ralloy 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 accor-dance 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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| Keywords: | Pt modified aluminide coating CVD oxidation kinetics |
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