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中国腐蚀与防护学报  2006, Vol. 26 Issue (6): 365-370     
  研究报告 本期目录 | 过刊浏览 |
溅射NiCrAlY渗铝涂层的高温氧化行为
任鑫; 汪信; 王福会
辽宁工程技术大学材料系
High temperature oxidation behavior of a sputtered NiCrAlY coating with aluminizing
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辽宁工程技术大学材料系
全文: PDF(368 KB)  
摘要: 用SEM\XRD和EPMA等手段,研究了溅射NiCrAlY涂层渗Al前后在1000℃和1100℃的高温氧化行为。结果表明,溅射涂层在1000℃形成了单相的α-Al2O3而具有优异的抗氧化性能;但在1100℃由于Al的过度消耗而失去保护作用。渗铝涂层在1000℃快速增长θ-Al2O3相,使其抗氧化性能稍逊于溅射涂层;在1100℃表面形成了以α-Al2O3为主的保护膜,抗氧化性能优于溅射涂层。
关键词 氧化溅射涂层渗铝    
Abstract:A nanocrystalline Ni-30Cr-8Al-0.5Y coating was deposited on a Ni-base superalloy by magnetron sputtering. Post-aluminizing was performed on the sputtered coating to improve the corresponding high-temperature oxidation resistance. The isothermal oxidation behaviors of the sputtered coating with and without aluminizing at 1000℃-1100℃ have been investigated using TGA, SEM/EDS, XRD and EPMA, respectively. The results indicated that the sputtered NiCrAlY coating possessed excellent oxidation resistance at 1000℃. Because of the excessive consumption of Al in the coating, it lost protective ability at 1100℃. The mass gain of the aluminized NiCrAlY coating was a little higher than that of the sputtered coating due to the formation of the rapid growthθ-Al2O3 phase at 1000℃. At 1100℃ the oxidation resistance of the latter was better than that of the former as a result of the formation of a continuous and protective Al2O3 scale.
Key wordsoxidation    sputtered coating    aluminizing
收稿日期: 2005-07-18     
ZTFLH:  TG174.4  
通讯作者: 任鑫      E-mail: renxin74@tom.com

引用本文:

任鑫; 汪信; 王福会 . 溅射NiCrAlY渗铝涂层的高温氧化行为[J]. 中国腐蚀与防护学报, 2006, 26(6): 365-370 .

链接本文:

https://www.jcscp.org/CN/Y2006/V26/I6/365

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