Phase transformation studies on YSZ doped with alumina. Part 2: Yttria segregation

Nazarpour, Soroush; López-Gándara, Carlos; Zamani, Cyrus; Fernández-Sanjuán, Josep M.; Ramos, F.; Cirera, A.

doi:10.1016/j.jallcom.2010.05.137

Cited by 24 publications

(11 citation statements)

References 24 publications

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“…Its value is of the order of 1 nm in both cubic and tetragonal zirconia. Based on Nazarpour et al 39 EDS nanoprobe results, the segregation factor was estimated to s = 5. 37 The Al 2 O 3 solubility in zirconia lattice is rather low, according to Stough and Hellmann.…”

Section: Resultsmentioning

confidence: 99%

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Lattice and Grain‐Boundary Diffusion of Al in Tetragonal Yttria‐Stabilized Zirconia Polycrystalline Ceramics (3Y‐TZP) Analyzed Using SIMS

et al. 2014

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Aluminum oxide was deposited on the surface of 3 mol% yttria‐stabilized tetragonal zirconia polycrystals (3Y‐TZP). The samples were annealed at temperatures from 1523 to 1773 K. Diffusion profiles of Al in the form of mean concentration vs. depth in B‐type kinetic region were investigated by secondary ion mass spectroscopy. The experimental results for the lattice diffusion (DB) and grain boundary diffusion (DGB) are as follows: normalDnormalB=6.5×105exp−590kJmolRTfalse[cm2sfalse] and DGBboldδs=2.6×105exp−675kJmolRTfalse[cm3sfalse]where δ is the grain‐boundary width and s is the segregation factor.

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Section: Resultsmentioning

confidence: 99%

“…37 The Al 2 O 3 solubility in zirconia lattice is rather low, according to Stough and Hellmann. 38 39 EDS nanoprobe results, the segregation factor was estimated to s = 5.…”

Section: Resultsmentioning

confidence: 99%

Lattice and Grain‐Boundary Diffusion of Al in Tetragonal Yttria‐Stabilized Zirconia Polycrystalline Ceramics (3Y‐TZP) Analyzed Using SIMS

et al. 2014

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“…The XRD patterns of the worn sample showed no evidence of the presence of the monoclinic phase, suggesting that no transformation toughening mechanism occurred during the wear test, a result which confirms the presence of non-transformable tetragonal phases (t 0 + t 00 ), as discussed above. ( Ref 29,30,41,42).…”

Section: Tribological Featuresmentioning

confidence: 99%

Sliding Wear Response of Nanostructured YSZ Suspension Plasma-Sprayed Coating

Kossman

Chicot²,

Decoopman³

et al. 2014

J Therm Spray Tech

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International audienceNanostructured yttria-stabilized zirconia coatings for applications in high-temperature environments can be deposited by suspension plasma spraying (SPS) techniques. The present research has been conducted in order to study the sliding wear response of a SPS ZrO2–8% mol. Y2O3 coating (75 μm in thickness) deposited onto a Haynes 230 substrate, using pin-on-disc tests. Some of the coated samples were subsequently heat-treated for 1 h at 300 and 600 °C. Samples characterization prior and after the wear tests was carried out by SEM, EDS, XRD and optical profilometry techniques. Instrumented indentation was employed to determine elastic modulus and hardness. The results have shown that the as-sprayed and heat-treated samples experienced severe wear (10−13 m3/Nm) and the worst wear performance corresponded to the sample heat treated at 600 °C. Such a behavior could be related to both the structural changes that took place during heat treatment and the nature and level of the residual stresses in the coatings. In general, the morphologies of the wear tracks observed by SEM have shown a smoothing of the surface, brittle fracture, smearing and grain pull-out

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“…Many ternary solid solutions based on YSZ have been investigated as promising candidates for TBC application. For example, Nazarpour et al have studied the metastable t 0 phase and the yttria diffusion phenomenon in Al 2 O 3 -doped YSZ [11,12]. Furthermore, extremely low thermal conductivity was reported in the equimolar Ta 2 O 5 and Y 2 O 3 co-doped ZrO 2 without oxygen vacancies by Clarke et al [13].…”

Section: Introductionmentioning

confidence: 99%

Thermo-mechanical properties of ThO2-doped Y2O3 stabilized ZrO2 for thermal barrier coatings

Zhao

Ren

Yang

et al. 2016

Ceramics International

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Phase transformation studies on YSZ doped with alumina. Part 2: Yttria segregation

Cited by 24 publications

References 24 publications

Lattice and Grain‐Boundary Diffusion of Al in Tetragonal Yttria‐Stabilized Zirconia Polycrystalline Ceramics (3Y‐TZP) Analyzed Using SIMS

Lattice and Grain‐Boundary Diffusion of Al in Tetragonal Yttria‐Stabilized Zirconia Polycrystalline Ceramics (3Y‐TZP) Analyzed Using SIMS

Sliding Wear Response of Nanostructured YSZ Suspension Plasma-Sprayed Coating

Thermo-mechanical properties of ThO2-doped Y2O3 stabilized ZrO2 for thermal barrier coatings

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