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Corrosion resistance of nonstoichiometric gadolinium zirconate coatings against CaO-MgO-Al2O3-SiO2 silicate
Zhang, Chengguan1; Fan, Yun1; Zhao, Juanli1; Chen, Hongfei1; Sun, Luchao2; Yang, Guang1; Liu, Bin1
Corresponding AuthorLiu, Bin(binliu@shu.edu.cn)
2021-06-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume41Issue:6Pages:3687-3695
AbstractGadolinium zirconate is a promising next-generation thermal barrier coating material and its CaO-MgO-Al2O3SiO2 (CMAS) resistance needs to be further increased. In this study, three gadolinium zirconate coatings with different Gd/Zr ratios are successfully prepared via atmospheric plasma spray using amorphous feedstock. Their mechanical properties and corrosion resistance are investigated. The Young?s moduli and hardness of as-sprayed coatings are comparable with the gadolinium zirconate coatings reported in previous literature. Furthermore, the higher Gd content promotes the formation of the Gd-apatite and the depletion rate of CMAS corrosion. As a result, the infiltration depth of Gd2.3Zr1.7O6.85 coating after 24 h annealing decreases up to 35 % compared with those of Gd2.0Zr2.0O7.0 and Gd1.8Zr2.2O7.1, exhibiting an enhanced long-term corrosion resistance. This work develops a viable fabrication method to produce non-stoichiometric gadolinium zirconate coatings with tailorable CMAS corrosion resistance and is expected to promote the future design of thermal barrier coatings with long service life.
KeywordThermal barrier coating Gadolinium zirconate Nonstoichiometry Corrosion resistance
Funding OrganizationNatural Science Foundation of Shanghai ; National Natural Science Foundation of China ; Program for Professor of Special Appointment (Eastern Scholar) by Shanghai Municipal Education Commission
DOI10.1016/j.jeurceramsoc.2021.01.016
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of Shanghai[20ZR1419200] ; National Natural Science Foundation of China[52072231] ; National Natural Science Foundation of China[52072232] ; Program for Professor of Special Appointment (Eastern Scholar) by Shanghai Municipal Education Commission[TP2015040]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000635771000005
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/162233
Collection中国科学院金属研究所
Corresponding AuthorLiu, Bin
Affiliation1.Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Chengguan,Fan, Yun,Zhao, Juanli,et al. Corrosion resistance of nonstoichiometric gadolinium zirconate coatings against CaO-MgO-Al2O3-SiO2 silicate[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2021,41(6):3687-3695.
APA Zhang, Chengguan.,Fan, Yun.,Zhao, Juanli.,Chen, Hongfei.,Sun, Luchao.,...&Liu, Bin.(2021).Corrosion resistance of nonstoichiometric gadolinium zirconate coatings against CaO-MgO-Al2O3-SiO2 silicate.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,41(6),3687-3695.
MLA Zhang, Chengguan,et al."Corrosion resistance of nonstoichiometric gadolinium zirconate coatings against CaO-MgO-Al2O3-SiO2 silicate".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 41.6(2021):3687-3695.
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