| AlSiY扩散涂层的高温氧化及热腐蚀行为 |
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| 引用本文： | 赵升升,姜肃猛.AlSiY扩散涂层的高温氧化及热腐蚀行为[J].材料科学与工程学报,2012,30(3):389-394,388. |
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| 作者姓名： | 赵升升 姜肃猛 |
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| 作者单位： | 1. 深圳职业技术学院,广东深圳,518055
2. 中国科学院金属研究所,辽宁沈阳,110016 |
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| 摘 要： | 采用电弧离子镀技术和后续扩散处理,制备了AlSiY扩散涂层。同时研究了AlSiY扩散涂层在1000℃下的高温氧化行为和900℃下Na2SO4+NaCl混合盐中的热腐蚀行为。实验结果表明:AlSiY扩散涂层主要由β-NiAl相以及一些弥散分布的α-W、CoWSi相组成。氧化和腐蚀过程中涂层中β-NiAl相提供Al源在表面形成了连续致密的Al2O3膜,使涂层具有很好的抗高温氧化和抗热腐蚀能力。
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| 关 键 词： | AlSiY 扩散涂层 高温氧化 热腐蚀 电弧离子镀 |
High Temperature Oxidation and Hot Corrosion Behaviors of an AlSiY Diffusion Coating |
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| ZHAO Sheng-sheng,JIANG Su-meng.High Temperature Oxidation and Hot Corrosion Behaviors of an AlSiY Diffusion Coating[J].Journal of Materials Science and Engineering,2012,30(3):389-394,388. |
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| Authors: | ZHAO Sheng-sheng JIANG Su-meng |
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| Affiliation: | 1.Shenzhen Polytechnic,Shenzhen 518055,China;2.Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China) |
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| Abstract: | An AlSiY diffusion coating was developed by a combined approach of arc ion plating and subsequent diffusion treatment.Oxidation behavior of the coating specimens under 1000℃ and hot corrosion behavior of the coating in Na2SO4+NaCl salts were tested.X-ray diffractometry(XRD) and scanning electron microscopy(SEM) were used to investigate the phase structures and cross-section images of the coating,respectively.The results indicate that the AlSiY diffusion coating consists of β-NiAl matrix with dispersed precipitates of α-W and CoWSi;the enhanced performance of the AlSiY diffusion coating is related to the β-NiAl matrix in the outer layer,which sustains the formation and repair of alumina scales. |
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| Keywords: | AlSiY diffusion coatings high temperature oxidation hot corrosion arc ion plating |
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