| 刘若愚,李军,苗小锋,姬小兰,唐湘林,汪云程,覃春媛.氧化时间对 NiCoCrAlYTa 涂层 / 镍基高温合金界面
显微组织影响[J].热喷涂技术,2023,(1):38~44. |
| 氧化时间对 NiCoCrAlYTa 涂层 / 镍基高温合金界面
显微组织影响 |
| Effect of Oxidation Duration on Interface Microstructureof NiCoCrAlYTa Coating on Nickel based Superalloy |
| |
| DOI：10.3969/j.issn.1674-7127.2023.01-005 |
| 中文关键词: NiCoCrAlYTa DD6 DD407 氧化时间 界面组织 |
| 英文关键词:NiCoCrAlYTa DD6 DD407 Oxidation duration Interface microstructure |
| 基金项目: |
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| 中文摘要: |
| 采用真空等离子喷涂技术在 DD407 合金和 DD6 合金上制备了 NiCoCrAlYTa 涂层。 通过 SEM、 EDS 等方
法研究了 900 ℃ 不同氧化时间下经热处理后 NiCoCrAlYTa 涂层 /DD407 合金和 NiCoCrAlYTa 涂层 /DD6 合金的
界面组织。 结果表明， 随着氧化时间延长， NiCoCrAlYTa 涂层 /DD407 合金界面扩散层组织析出 σ 相， σ 相形状
发生明显变化， 并且界面扩散层厚度缓慢增加， 扩散系数为 13.32 μm/h； 随着氧化时间延长， NiCoCrAlYTa 涂层
/DD6 合金界面扩散层析出 TCP 相（σ 相和 μ 相） ， TCP 相形状未发生明显变化， 并且界面扩散层厚度缓慢增加，
扩散系数为 3.85 μm/h。 |
| 英文摘要: |
| NiCoCrAlYTa coating was prepared on DD407 alloy and DD6 alloy by vacuum plasma spraying
technology. At different oxidation duration, the microstructure of the interface of NiCoCrAlYTa coating/DD407
alloy and NiCoCrAlYTa coating/DD6 alloy in 900 ℃ were studied by SEM、 EDS and other methods. The results
showed that with the increased of oxidation duration, σ phase was precipitated at the interface of NiCoCrAlYTa
coating/DD407 alloy, and the shape of σ phase changed significantly, the thickness of the interface diffusion layer
increased slowly. The diffusion coefficient of the diffusion layer of was 1.051 μm/h. While, with the increase of
oxidation duration, TCP phases(σ phase and μ phase) was precipitated at the interface of NiCoCrAlYTa coating/
DD6 alloy, and there was no significant changed about the shape, the thickness of the interface diffusion layer
increased slowly and the diffusion coefficient of the diffusion layer was 1.15 μm/h. |
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