任鑫.渗铝改性离子镀NiCrAIY涂层的高温热腐蚀行为[J].表面技术,2008,37(4):1-3.
REN Xin.Hot Corrosion Behavior of an Ion Plating NiCrAIY Coating with Alununizing[J].Surface Technology,2008,37(4):1-3 |
| 渗铝改性离子镀NiCrAIY涂层的高温热腐蚀行为 |
| Hot Corrosion Behavior of an Ion Plating NiCrAIY Coating with Alununizing |
| 投稿时间：2008-02-25 修订日期：2008-08-10 |
| DOI： |
| 中文关键词: 渗铝 离子镀 热腐蚀 NiCrAIY |
| 英文关键词:Aluminizing Ion plating Hot corrosion NiCAIY |
| 基金项目:辽宁省教育厅资助项目( 2005196) |
| 作者 | 单位 |
| 任鑫 | 辽宁工程技术大学材料科学与工程系，辽宁阜新123000 |
|
| Author | Institution |
| REN Xin | Department of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, China |
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| 中文摘要: |
| 为了进一步改善离子镀NiCrAIY涂层的抗热腐蚀性能，采用粉末包埋法在离子镀NiCrAIY涂层表面上进行渗铝，研究了涂层渗铝前后在850℃含氯硫酸盐膜下的热腐蚀行为。结果表明：在25 % NaCl +75 010 Na2 S04熔盐中850℃热腐蚀40h时，未渗铝的NiCrAIY涂层生成的是外层以Cr2 03为主的氧化膜，渗铝后的NiCrAIY涂层仅生成一层Al2 03膜；未渗铝的NiCrAIY涂层在腐蚀50h后失去保护作用，而渗铝涂层在腐蚀lOOh后表面仍形成以Al2 03为主的保护膜。因此，渗铝处理可以明显提高原涂层的抗热腐蚀性能。 |
| 英文摘要: |
| A NiCrAIY coating was deposited on a Ni-based superalloy by ion plating. Post-aluminizing was performed on the coating to improve the corresponding high-temperature properties. Hot corrosion behaviors in the presence of 750/o Na2S04 +250/o NaCl film at 850℃ of the coatings with and without aluminizing have been investigated. In 250/o NaCl +750/o Na2S04 molten salt at 850℃ , Cr203 scale formed on NiCrAIY coating at 40h, while at the same time a single layer of a-Al203 scale formed on the coating with post-aluminizing. The main oxide of Al203 remained on the surface of the coating with post-aluminizing, which obviously increased the resistance to hot corrosion of the coating. |
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