搪瓷／NiCrAlY复合涂层的抗高温氧化及热腐蚀行为

中国腐蚀与防护学报

2005, Vol. 25

Issue (6): 344-350

研究报告

本期目录 | 过刊浏览

搪瓷／NiCrAlY复合涂层的抗高温氧化及热腐蚀行为

田秀娟;王福会;李庆芬

腐蚀与防护国家重点实验室

High Temperature Oxidation and Hot Corrosion Behavior of Enamel/Sputtered NiCrAlY Composite Coating

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腐蚀与防护国家重点实验室

全文: PDF(378 KB)

摘要: 研究了溅射NiCrAlY及搪瓷／NiCrAlY复合涂层在900℃空气氧化及850℃75mass%Na2SO4+25mass%K2SO4和75mass% Na2SO4+ 25mass%NaCl的热腐蚀行为。结果表明：溅射NiCrAlY涂层900℃表面生成了单一的氧化铝膜，具有良好的抗氧化性能。而搪瓷复合涂层进一步提高了NiCrAlY层的抗氧化性能。 850℃两种盐的热腐蚀表明，基体合金没有出现内氧化及内硫化现象，搪瓷层的成分也没有显著变化,表现出优异的抗热腐蚀性能。

关键词 ：溅射, 搪瓷/NiCrAlY复合涂层, 热腐蚀

Abstract：High temperature oxidation and hot corrosion behavior of sputtered NiCrAlY and enamel/NiCrAlY composite coating have been studied. The results indicated that at 900℃ an Al2O3 scale formed on the sputtered NiCrAlY coating, which offered good protectiveness. The coating with enamel overlayers greatly improved the oxidation behavior of NiCrAlY coating. No obvious oxidation scale was formed at the boundary of coating and enamel. At 850℃, the coating with enamel overlayers exhibited more excellent hot corrosion resistance in the molten salt than sputtered NiCrAlY coating. Neither internal sulfidation nor oxidation occurred on the samples with the enamel coating and the composition of the enamels changed little.

Key words： sputter enamel/NiCrAlY composite coating hot corrosion

收稿日期: 2004-09-01

ZTFLH:

TG146.2

通讯作者: 田秀娟 E-mail: txj79@sohu.com

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田秀娟; 王福会; 李庆芬 . 搪瓷／NiCrAlY复合涂层的抗高温氧化及热腐蚀行为[J]. 中国腐蚀与防护学报, 2005, 25(6): 344-350 .

链接本文:

https://www.jcscp.org/CN/Y2005/V25/I6/344

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