Effect of CeO 2 doping on high temperature oxidation resistance of YSZ TBCs
Ceramics International, ISSN: 0272-8842, Vol: 48, Issue: 24, Page: 36450-36459
2022
- 15Citations
- 9Captures
- 1Mentions
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Most Recent News
Reports from Hebei University of Technology Describe Recent Advances in Ceramics Research (Effect of Ceo2 Doping On High Temperature Oxidation Resistance of Ysz Tbcs)
2023 JAN 11 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- Researchers detail new data in Technology - Ceramics Research.
Article Description
In the present work, YSZ TBCs and 10 wt% CeO 2 -doped YSZ thermal barrier coatings (CeYSZ TBCs) were prepared via atmospheric plasma spraying(APS) respectively, whereupon high temperature oxidation experiment was carried out at 1100 °C to compare the high temperature oxidation behavior and mechanism of the two TBCs. The results showed that the doping of CeO 2 reduced the porosity of YSZ TBCs by 23%, resulting in smaller oxidation weight gain and lower TGO growth rates for CeYSZ TBCs. Besides, the TGO generated in CeYSZ TBCs was obviously thinner and there were fewer defects inside it. For YSZ TBCs, as the oxidation process proceeded, Al, Cr, Co and Ni elements in the bonding coating were oxidized successively to form loose and porous spinel type oxides (CS), which was apt to cause the spalling failure of TBCs. While, the Al 2 O 3 layer of the TGO generated in CeYSZ TBCs ruptured later than that in YSZ TBCs, which delayed the oxidation of Cr, Co, and Ni elements and the formation of CS accordingly. Therefore, CeO 2 doping can effectively improve the high temperature oxidation resistance of YSZ TBCs.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0272884222030140; http://dx.doi.org/10.1016/j.ceramint.2022.08.205; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85137113963&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0272884222030140; https://dx.doi.org/10.1016/j.ceramint.2022.08.205
Elsevier BV
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