Inhibition Behavior of LZO on the Oxidation of Bond-coat in Thermal Barrier Coatings
Li Wensheng; Yang Lexin; An Guosheng; Cheng Bo; Feng Li; Zhang Yi
2019-11
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume48Issue:11Pages:3527-3534
AbstractIn order to clarify the inhibitory effect of LZO (La2Zr2O7) on the oxidation of bond-coat in thermal barrier coatings (TBCs), NiCoCrAlY bond-coat was deposited on 310S substrate by detonation gun spraying, and single ceramic 8YSZ coating and LZO/8YSZ double ceramic coating were deposited by air plasma spraying. The microstructure and phase structure of TBCs before and after high temperature oxidation were analyzed by SEM, EDS and XRD. The results show that the relative oxidation mass gain of the double ceramic LZO/8YSZ and the single ceramic 8YSZ structure are 2.82 and 3.13 mg/cm(2), respectively. Their TGO (thermally grown oxide) growth rate constant K-p is 5.79 x 10(-2) and 6.26 x 10(-2) m(2)/h, respectively. And the corresponding thickness distribution range is 3.75 similar to 5.25 mu m and 5 similar to 5.5 mu m, respectively after isothermal oxidation (100 h) at 1100 degrees C. Compared with the single ceramic 8YSZ TBCs, TGO exhibits obvious characteristics which are less oxidation mass gain, lower growth rate, and slower beta phase transition in bond-coat of the LZO/8YSZ double ceramic TBCs.
KeywordD-gun LZO/8YSZ double ceramic coating 1100 degrees C isothermal oxidation TGO
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Indexed BySCI
Language中文
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000500083600016
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/56499
Collection材料科学与工程学院
省部共建有色金属先进加工与再利用国家重点实验室
Corresponding AuthorLi Wensheng
AffiliationLanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
GB/T 7714
Li Wensheng,Yang Lexin,An Guosheng,et al. Inhibition Behavior of LZO on the Oxidation of Bond-coat in Thermal Barrier Coatings[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(11):3527-3534.
APA Li Wensheng,Yang Lexin,An Guosheng,Cheng Bo,Feng Li,&Zhang Yi.(2019).Inhibition Behavior of LZO on the Oxidation of Bond-coat in Thermal Barrier Coatings.RARE METAL MATERIALS AND ENGINEERING,48(11),3527-3534.
MLA Li Wensheng,et al."Inhibition Behavior of LZO on the Oxidation of Bond-coat in Thermal Barrier Coatings".RARE METAL MATERIALS AND ENGINEERING 48.11(2019):3527-3534.
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