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Thermal cycling lives of plasma sprayed YSZ based thermal barrier coatings in a burner rig corrosion test
Kang Y.X.1; Bai Y.1; Yuan T.3; Wang Y.1; Fan W.1; Gao Y.1; Bao C.G.1; Chen H.Y.1; Li B.Q.2
2017-09-15
Source PublicationSurface and Coatings Technology
ISSN02578972
Volume324Pages:307-317
AbstractThis study aims to provide an insight into the effect of CaO-MgO-AlO-SiO (CMAS) on the thermal cycling performance of plasma sprayed yttria partially stabilized zirconia (YSZ) coatings. The microstructural evolution and thermal cycling lives of YSZ coatings with and without CMAS corrosion were comparatively studied by a burner rig corrosion test. The experimental and simulation results showed that the molten CMAS that penetrated into the coatings reduced the porosity and increased the in-plane modulus and stiffness of coatings. During cooling, the large in-plane stress in the CMAS penetrated layer promoted the formation of through-thickness cracks, which significantly accelerated the oxidation of bond coat. Compared to the non-corroded coatings, the large out-of-plane stress that was normal to the YSZ/bond coat in the CMAS corroded coatings promoted the diffusion of Cr, Co and Ni ions, which significantly improved the growth of mixed oxides (such as CrO, NiO and spinels) and thickened the TGO layer which eventually resulted in the spallation of TBCs.
KeywordCMAS CSN oxides Phase transformation Sintering Thermal barrier coatings Through-thickness cracks
DOI10.1016/j.surfcoat.2017.05.066
URLView the original
Language英語
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Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Xi'an Jiaotong University
2.University of Michigan-Dearborn
3.Beijing Golden Wheel Special Machine Co. Ltd.
Recommended Citation
GB/T 7714
Kang Y.X.,Bai Y.,Yuan T.,et al. Thermal cycling lives of plasma sprayed YSZ based thermal barrier coatings in a burner rig corrosion test[J]. Surface and Coatings Technology,2017,324:307-317.
APA Kang Y.X..,Bai Y..,Yuan T..,Wang Y..,Fan W..,...&Li B.Q..(2017).Thermal cycling lives of plasma sprayed YSZ based thermal barrier coatings in a burner rig corrosion test.Surface and Coatings Technology,324,307-317.
MLA Kang Y.X.,et al."Thermal cycling lives of plasma sprayed YSZ based thermal barrier coatings in a burner rig corrosion test".Surface and Coatings Technology 324(2017):307-317.
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