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| OXIDATION RESISTANCE OF NANOCRYSTAL ODS ALUMINIDE COATINGS PRODUCED BY PACK ALUMINIZING PROCESS ASSISTED BY BALL PEENING | |
| 作者姓名： | Z.L. Zhan Y.D. He W. Gao |
| 作者单位： | [1]Kunming University of Science and Technology, Kunming 650093, China [2]Beijing Key Laboratory for Corrosion, Erosion and Surface Technology, University of Science and Technology Beijing, Beijing 100083, China [3]Engineering School, The University of Auckland, Auckland 1020, New Zealand |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| 摘 要： | Nanocrystal ODS （oxide dispersion strengthening） aluminide coatings were produced on a stainless steel and nickel-based superalloy by the pock aluminizing process assisted by ball peening, Pure Al powders and 1% of ultra-fine Y2O3 powders were mixed by ball milling. The ultra-fine Y2O3 powders were dispersed in Al particles. Ball peening welded the Al particles onto the substrate and accelerated the formation of aluminide coating. Nanocrystal ODS aluminide coatings were produced by the outward growth at a much low temperature （below 600℃） in a short treatment time. The effects of the operation temperature and treatment time on the formation of the coatings were analyzed. SEM （scanning electron microscope）, AFM （atomic force microscope）, EDS （energy dispersive X-ray spectroscopy）, XRF （X-ray fluorescence spectrometer） and XRD （X-ray diffraction） methods were applied to investigate the microstructure of the coatings. High-temperature oxidation tests were carried out to evaluate the oxidation resistance of the ODS aluminide coatings. |
| 关 键 词： | ODS涂层 纳米涂层 铝 喷丸硬化 高温氧化 |
| 收稿时间： | 2005-08-26 |
| 修稿时间： | 2006-04-10 |
OXIDATION RESISTANCE OF NANOCRYSTAL ODS ALUMINIDE COATINGS PRODUCED BY PACK ALUMINIZING PROCESS ASSISTED BY BALL PEENING |
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| Z.L. Zhan Y.D. He W. Gao.OXIDATION RESISTANCE OF NANOCRYSTAL ODS ALUMINIDE COATINGS PRODUCED BY PACK ALUMINIZING PROCESS ASSISTED BY BALL PEENING[J].Acta Metallurgica Sinica(English Letters),2006,19(3):215-222. | |
| Authors: | ZL Zhan YD He W Gao |
| Affiliation: | 1. Kunming University of Science and Technology, Kunming 650093, China;Beijing Key Laboratory for Corrosion, Erosion and Surface Technology,University of Science and Technology Beijing, Beijing 100083, China 2. Beijing Key Laboratory for Corrosion, Erosion and Surface Technology,University of Science and Technology Beijing, Beijing 100083, China 3. Engineering School, The University of Auckland, Auckland 1020, New Zealand |
| Abstract: | Nanocrystal ODS (oxide dispersion strengthening) aluminide coatings were produced on a stainless steel and nickel-based superalloy by the pack aluminizing process assisted by ball peening. Pure Al powders and 1% of ultra-fine Y2O3 powders were mixed by ball milling. The ultra-fine Y2O3powders were dispersed in Al particles. Ball peening welded the Al particles onto the substrate and accelerated the formation of aluminide coating. Nanocrystal ODS aluminide coatings were produced by the outward growth at a much low temperature (below 600℃) in a short treatment time.The effects of the operation temperature and treatment time on the formation of the coatings were analyzed. SEM (scanning electron microscope), AFM (atomic force microscope), EDS (energy dispersive X-ray spectroscopy), XRF (X-ray fluorescence spectrometer) and XRD (X-ray diffraction )methods were applied to investigate the microstructure of the coatings. High-temperature oxidation tests were carried out to evaluate the oxidation resistance of the ODS aluminide coatings. |
| Keywords: | nano-coating ODS coating aluminide coating ball peening high-temperature oxidation |
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