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粉末包埋法制备镍基高温合金Y-Cr-Al涂层高温氧化行为
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1.南通航运职业技术学院,江苏大学;2.江苏大学

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国家自然科学基金项目(51641102)


High temperature oxidation behavior of Y-Cr-Al coatings on Ni-based superalloy by pack cementation
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1.Mechanical and Electrical Department,Nantong Shipping College,Nantong;2.School of Materials Science and Engineering,Jiangsu University,Zhenjiang

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    摘要:

    本研究在不同的Al含量的条件下应用粉末包埋法制备了Y-Cr-Al涂层,并对其高温氧化行为进行了研究。结果显示:Al含量为2%所生成的涂层为三层结构,Al含量为2.5%,3%所形成的涂层为两层结构。Al含量为2%,3%的条件下涂层主要以α-Cr ,NiAl为主,Al含量为2.5%时生成的涂层富含Cr的NiAl相,许多Cr原子固溶于NiAl相中。Al含量为2%所生成的涂层氧化性能最差,Al含量为2.5%所生成的涂层展现了较为优异的氧化性能。

    Abstract:

    The oxidation behaviors of Y-Cr-Al coatings by pack cementation process with different Al content were investigated. The results show that the coating with 2% Al content in the pack has a three-layer structure, while the coatings with 2.5% and 3% Al content have two layers. And the main phases in the coating with 2% and 3% Al content are α-Cr and NiAl, respectively. But the main phases in coating with 2.5% Al content is NiAl with several Cr-rich particles and solid solution Cr atoms in the coating. The oxidation test demonstrates that the coated specimen with 2% Al content has the poorest oxidation resistance, but the one with 2.5% Al content has a favorable oxidation resistance.

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曹将栋,童福利,花银群.粉末包埋法制备镍基高温合金Y-Cr-Al涂层高温氧化行为[J].稀有金属材料与工程,2019,48(11):3448~3454.[Cao Jiangdong, Tong Fuli, Yinqin Hua. High temperature oxidation behavior of Y-Cr-Al coatings on Ni-based superalloy by pack cementation[J]. Rare Metal Materials and Engineering,2019,48(11):3448~3454.]
DOI:10.12442/j. issn.1002-185X.20180986

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历史
  • 收稿日期:2018-09-25
  • 最后修改日期:2018-12-24
  • 录用日期:2018-12-29
  • 在线发布日期: 2019-12-10
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