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谭晓晓.CeO<sub>2</sub>改善低温渗铝涂层抗氧化性能的研究[J].稀有金属材料与工程(英文),2019,48(6):1785~1790.[Xiaoxiao Tan.Improved oxidation resistance of a CeO<sub>2</sub>-midifed aluminide coating by low-temperature pack cementation[J].Rare Metal Materials and Engineering,2019,48(6):1785~1790.]
Improved oxidation resistance of a CeO<sub>2</sub>-midifed aluminide coating by low-temperature pack cementation
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Received:September 09, 2018  Revised:September 30, 2018
DOI:
Key words: Aluminide coating  Oxidation  Pack cementation  Reactive element effect (REE)
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目)
Author NameAffiliation
Xiaoxiao Tan  
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Abstract:
      CeO2-free and CeO2-modified aluminide coatings were prepared by aluminizing pure Ni film and Ni-CeO2 film on Ni plate at 620°C, respectively. The effect of the CeO2 addition on the growth rate and adhesion of the alumina scale was investigated at 1000 °C. The results show that the addition of nanometer CeO2 in aluminide coating of δ phase delayed the formation of a continuous α-Al2O3 scale and decreased the growth rate of alumina scale during oxidation. Moreover, the alumina scale adhesion was improved by the addition of nanometer CeO2 due to the smaller cavities formed at the alumina scale/coating interface compared with the CeO2-free one.