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High-temperature oxidation behavior of arc ion plated NiCoCrAlYSiB coatings on cobalt-based superalloy

机译：钴基高温合金上电弧离子镀NiCoCrAlYSiB涂层的高温氧化行为

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摘要

NiCoCrAlYSiB coatings were deposited on the Co-based superalloy K40 by arc ion plating (AIP). The oxidation behavior of the bare alloy and of the coated specimens was tested in static air for 200 h at 1000 deg C and 100 h at 1050 deg C. The results showed that the oxidation rate of the system was greatly reduced by the addition of the NiCoCrAlYSiB coatings. Thin and adherent alpha-Al_2O_3 scales that formed on the coated specimens protected the substrates from further oxidation attack while non-protective oxide scales, mainly of Cr_2O_3 and CoCr_2O_4, appeared on bare K40 alloy. Element profiles on metallographic cross sections indicated that apparent interdiffusion occurred between the coatings and the substrates. The interdiffusion behavior and the resulting microstructure were investigated. As compared to aluminide coatings, NiCoCrAlYSiB coatings have less influence on the substrate microstructure.
机译：通过电弧离子镀（AIP）将NiCoCrAlYSiB涂层沉积在Co基高温合金K40上。在静态空气中在1000摄氏度下200 h和在1050摄氏度下100 h的条件下测试了裸露合金和涂层试样的氧化行为。结果表明，通过添加三氯甲烷，系统的氧化速率大大降低。 NiCoCrAlYSiB涂层。在涂层样品上形成的薄而附着的α-Al_2O_3氧化皮可保护基材免受进一步的氧化侵蚀，而裸露的K40合金上则出现主要是Cr_2O_3和CoCr_2O_4的非保护性氧化皮。金相截面上的元素分布表明，在涂层和基材之间出现了明显的相互扩散。研究了相互扩散行为和所得的微观结构。与铝化物涂层相比，NiCoCrAlYSiB涂层对基材微观结构的影响较小。

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  • 来源
    《Journal of Materials Research》 |2006年第3期|p.737-746|共10页
  • 作者

    Y.J. Tang; Q.M. Wang; F.H. Yuan;

  • 作者单位

    Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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