Fabrication and Characteristics of YSZ–YSZ/Al2O3 Double-Layer TBC

Ren, Chao; He, Yedong; Wang, D. R.

doi:10.1007/s11085-011-9236-8

Cited by 11 publications

(5 citation statements)

References 33 publications

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“…Therefore the ceramic bond coat TBCs system was proposed. C.Ren et al [39,40] 4) low oxygen diffusion rate. So far, YSZ is the only one material, which has been used in DCL TBCs as for inner materials.…”

Section: Current Research On Functional Materialsmentioning

confidence: 99%

“…These mainly attributed to that the oxidation rate of TGO scale was decreased by the "sealing effect" of α-Al 2 O 3 , the "reactive element effect", and the reduced thermal stresses by means of nano/micro composite structure. The other [40] is 6YSZ/(YSZ-Al 2 O 3 ), which also fabricated by PFMS. It also possessed superior properties to resist oxidation of alloy and spallation of coating since the alloy substrate was sealed completely by α-Al 2 O 3 phase.…”

Section: Current Research On Functional Materialsmentioning

confidence: 99%

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Overview on Double Ceramic Layer Thermal Barrier Coatings

Huang

Meng

Tang

et al. 2014

AMR

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Thermal barrier coatings (TBCs) system has been the subject of vigorous research over the past decade, driven by the demands for enhanced reliability and substantially higher operating temperature envisaged for the next generations of gas turbine engines. As a novel structure system, the double ceramic layer design is a promising TBCs structure system , especially its long thermal cycling lifetime compared with the single ceramic layer. This paper mainly reviewed of development situation and the existing problems of several mainly double ceramic layer thermal barrier systems, including M-YSZ/YSZ, A2B2O7/YSZ, LTA/YSZ, LnMA/YSZ, ABO3/YSZ and so on. Many challenges remain but healthy and growing collaborations between the science and technology communities bode well for future progress in this area.

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Section: Current Research On Functional Materialsmentioning

confidence: 99%

Section: Current Research On Functional Materialsmentioning

confidence: 99%

Overview on Double Ceramic Layer Thermal Barrier Coatings

Huang

Meng

Tang

et al. 2014

AMR

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“…Since good properties have been obtained from the Al 2 O 3 /YSZ coated composite coating [20], a novel TBC with bond coat of Al 2 O 3 /YSZ coated composite coating has been developed on Ni-based superalloy by composite sol-gel and pressure filtration microwave sintering technologies, as shown in Fig. 1(c) [21]. The bond coat is composed of micro-sized YSZ particles packed by nano-sized α-Al 2 O 3 coating.…”

Section: Developed Novel Composite Tbcmentioning

confidence: 99%

Progress in Novel Composite Thermal Barrier Coating

Yao

Ren

et al. 2014

MSF

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Improved structure design has been acknowledged as an effective approach to obtain thermal barrier coating (TBC) with excellent resistance to high-temperature oxidation and spallation. Since ceramic composites can effectively enhance the strength and durability of ceramic components and improve their fracture toughness, it is reasonable to propose that composite structure of TBC should possess improved mechanical properties than its traditional structure with single phase in bond coat and top coat. In this paper, the progress in novel composite TBC developed by the authors’ research group has been summarized, including TBCs with bond coat of ceramic/ceramic and ceramic/noble metal composite coatings which replace the traditional alloy bond coat, and also TBCs with novel composite structure have been studied. It has been investigated that these TBCs exhibit not only excellent high-temperature oxidation resistance, but also excellent resistance to cracking, spallation and buckling under thermal cycling. Such beneficial effects can be attributed to the sealing mechanism of these coatings on oxygen diffusion, the improvement of thermal expansion mismatch and the toughening effects of these composite structures. It would be a growing trend in introducing various composite modes into the traditional thermal barrier coating or developing new composite structure of thermal barrier coating.

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“…Gas turbine blades are generally covered with a coating to withstand high heat and corrosion during operation . One of the most effective coating systems used consists of MCrAlY bond coats and yttria‐stabilized zirconia (YSZ) thermal barrier coatings (TBC) .…”

Section: Introductionmentioning

confidence: 99%

Structural investigation of Al₂O₃ coatings by PECVD with a high deposition rate

Zhang

Zheng

Wang

et al. 2019

Int J Applied Ceramic Tech

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The deposition of alumina on thermal barrier coatings can effectively avoid hot corrosion and increase durability. Al 2 O 3 coatings were prepared on an yttria-stabilized zirconia (YSZ) substrate by plasma chemical vapor deposition (CVD). The effects of microwave power (P M ) and total pressure (P tot ) on the crystalline phase and microstructure of Al 2 O 3 coatings were investigated, and the effect of the mechanism on the deposition rate was also analyzed. The α-Al 2 O 3 coatings with a needle-like microstructure were formed at a higher P M and P tot , whereas the γ-phase coatings exhibited a cauliflower-like microstructure at a lower P M and P tot . A maximum deposition rate (R dep ) of 58 μmh −1 was obtained, which is significantly higher than those of conventional CVD methods. K E Y W O R D S alumina, chemical vapor deposition, coatings | 1357 ZHANG et Al. How to cite this article: Zhang S, Zheng L, Wei G, et al. Structural investigation of Al 2 O 3 coatings by PECVD with a high deposition rate. Int J Appl Ceram

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Fabrication and Characteristics of YSZ–YSZ/Al2O3 Double-Layer TBC

Cited by 11 publications

References 33 publications

Overview on Double Ceramic Layer Thermal Barrier Coatings

Overview on Double Ceramic Layer Thermal Barrier Coatings

Progress in Novel Composite Thermal Barrier Coating

Structural investigation of Al₂O₃ coatings by PECVD with a high deposition rate

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Fabrication and Characteristics of YSZ–YSZ/Al2O3 Double-Layer TBC

Cited by 11 publications

References 33 publications

Overview on Double Ceramic Layer Thermal Barrier Coatings

Overview on Double Ceramic Layer Thermal Barrier Coatings

Progress in Novel Composite Thermal Barrier Coating

Structural investigation of Al2O3 coatings by PECVD with a high deposition rate

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Product

Resources

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Structural investigation of Al₂O₃ coatings by PECVD with a high deposition rate