Fracture behaviour of Y-TZP ceramics: New outcomes

Gogotsi, G. A.; Galenko, V. I.; Mudrik, S. P.; Ozersky, B.I.; Khvorostyany, V.V.; Khristevich, T.A.

doi:10.1016/j.ceramint.2009.09.001

Cited by 30 publications

(13 citation statements)

References 16 publications

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“…On one hand, the high strength and fracture resistance of zirconia core is largely controlled by its manufacturing process [30]. However, many processing factors such as the initial powder, the sintering temperature and the duration or cooling rate after sintering, may affect the microstructure of the zirconia ceramics in their initial monoclinic content, residual stresses or their LTD resistance [11].…”

Section: Discussionmentioning

confidence: 99%

Confocal Raman microscopy and SEM/EDS investigations of the interface between the zirconia core and veneering ceramic: the influence of a liner and regeneration firing

Durand¹,

Jacquot²,

Salehi³

et al. 2012

J Mater Sci: Mater Med

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The aim of this study was to evaluate the changes in the transition layer at the interface between yttria partial stabilized tetragonal zirconia polycrystalline (Y-TZP) core and veneering feldspathic ceramic (VITA VM(®)9), under different manufacturing methods. Confocal Raman microscopy and energy dispersive X-ray spectroscopy (EDS) analyses were carried out on tapered veneered cross sections of the interface. For some samples, an additional firing of the core was used, as the application of an optional liner material between the core and veneer. Single Raman spectra were distinguishable between Y-TZP and the veneering materials. VM(®)9 and liner spectra were broadly superimposable. No substantial differences appeared in their chemical elemental composition. 2D Raman images and EDS analysis emphasized changes in the interdiffusion thickness; the additional firing of the core decreased the interdiffusion zone, and the highest firing temperature of the liner increased the interdiffusion zone. These results, which will help us understand the changes in this transition layer, are discussed.

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Section: Discussionmentioning

confidence: 99%

Confocal Raman microscopy and SEM/EDS investigations of the interface between the zirconia core and veneering ceramic: the influence of a liner and regeneration firing

Durand¹,

Jacquot²,

Salehi³

et al. 2012

J Mater Sci: Mater Med

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“…Some literatures reported the transition from t-ZrO 2 into m-ZrO 2 can partially or completely absorb or dissipate the energy of these cracks. Such considerable enhancement in toughness may be owing to its martensitic phase transformation of tetragonal to monoclinic symmetry [49][50][51][52]. In addition, many factors, such as morphology, crystalline phases, amounts of crystalline phase and size of crystalline particles, have an effect on the mechanical strength of the ceramics [53][54].…”

Section: Mechanical Properties Of Ceramicsmentioning

confidence: 97%

Effect of zinc oxide and zirconia on structure, degradability and in vitro bioactivity of wollastonite

Wang

Chen

2015

Ceramics International

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“…Yttria stabilised zirconia (YSZ) ceramics are used in a variety of structural and functional applications due to their good mechanical properties over a wide temperature range [1,2]. In particular, YSZ layers are used as top coat of thermal barrier coatings (TBCs) because of their superior high-temperature properties, such as low thermal conductivity, high toughness and relatively high thermal expansion coefficient [3] One of the most implemented techniques to manufacture TBCs is atmospheric plasma spraying (APS) [4].…”

Section: Introductionmentioning

confidence: 99%

Role of suspension preparation in the spray drying process to obtain nano/submicrostructured YSZ powders for atmospheric plasma spraying

Carpio

Moreno

Gómez³

et al. 2015

Journal of the European Ceramic Society

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Thermal barrier coatings were manufactured by atmospheric plasma spray process from YSZ powders. These powders were made by a reconstitution process which consists in a spray-drying of suspensions followed by thermal treatment of the granules.Nano-and submicron-sized YSZ particles were used as starting material. Feeding well dispersed suspension to spray-drying chamber is the first key step in the reconstitution process. With this aim, concentrated, stable YSZ suspensions were obtained by means of the optimisation of the preparation conditions. Then reconstituted granules were produced by spray-drying of the YSZ suspensions and the following thermal treatment which was optimised.The reconstituted powders were then successfully deposited on austenitic stainless steel coupons by APS. The findings in this work proved that the reconstituted powders characteristics which in turn are related to the starting suspension properties affect the final coating microstructure in terms of the amount of unmelted zones.

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Fracture behaviour of Y-TZP ceramics: New outcomes

Cited by 30 publications

References 16 publications

Confocal Raman microscopy and SEM/EDS investigations of the interface between the zirconia core and veneering ceramic: the influence of a liner and regeneration firing

Confocal Raman microscopy and SEM/EDS investigations of the interface between the zirconia core and veneering ceramic: the influence of a liner and regeneration firing

Effect of zinc oxide and zirconia on structure, degradability and in vitro bioactivity of wollastonite

Role of suspension preparation in the spray drying process to obtain nano/submicrostructured YSZ powders for atmospheric plasma spraying

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