Thermal Conductivity, Phase Stability, and Oxidation Resistance of Y3Al5O12(YAG)/Y2O3–ZrO2(YSZ) Thermal-Barrier Coatings

Su, Y. Jennifer; Trice, Rodney W.; Faber, K. T.; Wang, H.; Porter, Wallace D.

doi:10.1023/b:oxid.0000025334.02788.d3

Cited by 67 publications

(29 citation statements)

References 15 publications

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“…11(b). The Cr/Ni oxides at the outer-layer of TGO are not an uncommon, and many investigations ( Ref 23,30,36,41,44,45) reported the same oxidation results.…”

Section: Features Of Tgosmentioning

confidence: 77%

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Effect of Chemical Compositions and Surface Morphologies of MCrAlY Coating on Its Isothermal Oxidation Behavior

Zhang

et al. 2010

J Therm Spray Tech

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Chemical composition and surface morphology of MCrAlY coatings are factors which influence the oxidation behavior and the thermal durability of thermal barrier coatings. In this study, Cold-sprayed Ni20Cr10AlY and Ni23Co20Cr8.5Al4.0Ta0.6Y coatings with polished surfaces were employed to study the effect of composition on the oxidation behavior. The cold-sprayed MCrAlY coatings at the as-sprayed and shot-peened surface conditions, along with the low pressure plasma-sprayed MCrAlY coating with sputters adhered weakly on the surface, were employed to investigate the effects of surface morphologies of MCrAlY coatings on their oxidation behavior. Cold-sprayed Ni20Cr10AlY coating exhibited a two-stage oxidation behavior and a higher TGO growth rate than that of the cold-sprayed Ni23Co20Cr8.5Al4.0Ta0.6Y coating at the rapid growth stage. After 10-h oxidation, the TGO on the as-cold-sprayed coating surface was mainly constituted by Al 2 O 3 , while the TGO on the coating surface attached with sputters was composed of Al 2 O 3 and Cr/Ni-oxides. After 500-h oxidation, Cr 2 O 3 and porous spinel appeared in the TGO on the surface of the as-cold-sprayed coatings with different compositions. The growth of Cr/Ni-oxides was attributed to the Al depletion. The content of spinel decreased on the cold-sprayed NiCrAlY with a shot-peened surface compared with the as-sprayed coating.

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“…11(b). The Cr/Ni oxides at the outer-layer of TGO are not an uncommon, and many investigations ( Ref 23,30,36,41,44,45) reported the same oxidation results.…”

Section: Features Of Tgosmentioning

confidence: 77%

“…In fact, the diffusion of Al, Cr, Ni and Co elements in the Al 2 O 3 scale was persisting from the beginning of oxidation to the end. The initially formed Al 2 O 3 -based TGO is due to the low Gibbs free energy of Al 2 O 3 formation (Ref 38,41,42). In other words, it is more thermodynamically favorable for the Al 2 O 3 rather than the Cr/Ni oxides to form.…”

mentioning

confidence: 99%

Effect of Chemical Compositions and Surface Morphologies of MCrAlY Coating on Its Isothermal Oxidation Behavior

Zhang

et al. 2010

J Therm Spray Tech

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“…Therefore, phase relations in the ZrO 2 -YO 1.5 -AlO 1.5 system are important to understand the interactions between TBC and TGO. Multilayer coatings Y 3 Al 5 O 12 (YAG)/YSZ are suggested to enhance bond coat oxidation resistance [6]. Hence phase relations of the ternary system could elucidate stability issues of such coatings.…”

Section: Introductionmentioning

confidence: 99%

On the phase relations in the ZrO2–YO1.5–AlO1.5 system

Lakiza

Fabrichnaya

Zinkevich

et al. 2006

Journal of Alloys and Compounds

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“…), electron beam physical vapor deposition technique, dip coating, sol-gel, aluminizing process, slurry coating, etc. [17][18][19][20][21]. However, available X-Cr 2 O 3 (where X: Al 2 O 3 , ZrO 2 ) phase diagrams ( Fig.…”

Section: Selection Of the Coating Materialsmentioning

confidence: 99%

Development of graded Ni–YSZ composite coating on Alloy 690 by Pulsed Laser Deposition technique to reduce hazardous metallic nuclear waste inventory

Sengupta

Rogalla

Becker

et al. 2011

Journal of Hazardous Materials

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Thermal Conductivity, Phase Stability, and Oxidation Resistance of Y₃Al₅O₁₂(YAG)/Y₂O₃–ZrO₂(YSZ) Thermal-Barrier Coatings

Cited by 67 publications

References 15 publications

Effect of Chemical Compositions and Surface Morphologies of MCrAlY Coating on Its Isothermal Oxidation Behavior

Effect of Chemical Compositions and Surface Morphologies of MCrAlY Coating on Its Isothermal Oxidation Behavior

On the phase relations in the ZrO2–YO1.5–AlO1.5 system

Development of graded Ni–YSZ composite coating on Alloy 690 by Pulsed Laser Deposition technique to reduce hazardous metallic nuclear waste inventory

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