Synthesis and crystallization behavior of 3mol% yttria stabilized tetragonal zirconia polycrystals (3Y-TZP) nanosized powders prepared using a simple co-precipitation process

Hsu, Yu-Wei; Kang, Yang; Chang, Kuo-Ming; Yeh, Sung-Wei; Wang, Moo–Chin

doi:10.1016/j.jallcom.2011.03.162

Cited by 72 publications

(31 citation statements)

References 26 publications

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“…2) shows that the crystallization temperature rises with increasing InO 1.5 and NbO 2.5 concentration. The crystallization at 491 °C for the 9 mol% InNbSZ sample is higher than 480 °C 30 and 486 ºC 27 recently reported for the crystallization of tetragonal YSZ. Comparing these DSC results with the XRD patterns shown in Fig.…”

Section: Crystallization and Phase Formationcontrasting

confidence: 57%

“…Water removal progresses continuously up to 495 °C and, at this temperature, an exothermic peak due the crystallization of zirconia can be observed. For this FD dehydrated sample, the mass loss of 17.2 wt% between 25 and 495 °C occurs because of desorption of water and removal of hydroxyl groups (OH-) 30 . In contrast to FD, the dehydration of the 6InNbSZ sample by EW/AD leads to significant changes in the DSC/TG curve (Fig.…”

Section: Modifications In the Gels After Ew/ad And Fdmentioning

confidence: 99%

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Synthesis by coprecipitation of india-stabilized zirconia and codoping with MoO3, WO3, TaO2.5, or NbO2.5 for application as thermal barrier coatings

Piva

Morelli

2016

Mat. Res.

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Coprecipitation synthesis of nanocrystalline india-stabilized zirconia with high surface area and codoping with MoO 3 , WO 3 , TaO 2.5 , or NbO 2.5 is reported. The concentration of codopants was defined by the charge-compensating mechanism. Ethanol washing followed by azeotropic distillation and freeze drying were compared as dehydration techniques for the gels. As determined by XRD and Raman scattering, 9 mol% of InO 1.5 plus charge-compensating dopants is sufficient to completely stabilize the high-temperature tetragonal phase of zirconia. The effect of alloying hexavalent and pentavalent oxides was secondary compared to the InO 1.5 concentration in the retention of the tetragonal structure. Improved specific surface area of 106.1 m 2 g -1 and crystallite size between 8 and 9 nm were achieved through ethanol washing and subsequent azeotropic distillation even after calcination at 600 ºC. This result is attributed to the effect of the incorporation of ethoxy and butoxy groups after the treatment of the gels in organic medium, as detected by FT-IR spectroscopy and DSC/TG.

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Section: Crystallization and Phase Formationcontrasting

confidence: 57%

Section: Modifications In the Gels After Ew/ad And Fdmentioning

confidence: 99%

Synthesis by coprecipitation of india-stabilized zirconia and codoping with MoO3, WO3, TaO2.5, or NbO2.5 for application as thermal barrier coatings

Piva

Morelli

2016

Mat. Res.

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“…Crystalline, non-agglomerated, nano-sized Al 2 O 3 -ZrO 2 prepared by Zhou and coworkers [57] can be cited as examples, which had a particle diameter of about 7 nm, followed by tetragonal zirconia polycrystals stabilized by y rium (3 mol%.) with a diameter of 21.3 nm obtained by Hsu et al [58] as well as lead catalysts based on CdO 2 -ZrO 2 (in a single phase) with a diameter of 5.2 to 28.9 nm [59] and the Y 2 O 3 -ZrO 2 powder with a crystal diameter of 53-109 µm obtained by Aruna et al [60].…”

Section: Synthesis Of Nano-zirconia By Co-precipitationmentioning

confidence: 96%

“…e greatest advantage of the precipitation method is the possibility to obtain the product in amounts consisting of grams [28], and the ability to use cheaper and easier to acquire equipment and nano-particle precursors [58,61]. e disadvantage of this method is the inability to control the size of the resulting nanoparticles [28].…”

Section: Synthesis Of Nano-zirconia By Co-precipitationmentioning

confidence: 99%

Characteristics of selected methods for the synthesis of nanometric zirconium oxide – critical review

Kwaśny¹,

Balcerzak²

2017

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High chemical stability, resistance to changes in the pH, pressure and temperature meant that zirconium oxide is widely used in many elds. It is used in water treatment and waste water treatment processes, as well as air puri cation. In this paper, selected methods of nano-zirconia synthesis in liquid phase were characterized. ese methods include, among others, the microemulsion method. Based on literature data, the advantages and di culties associated with the use of each method are presented, in order to answer the question of which method of nanometric zirconium oxide synthesis in the liquid phase is the most advantageous. e authors also pointed out some directions of development for the discussed methods, which relate to, among others, solvent change and the use of additives in the form of polymers.Keywords: nano zirconia, hydrothermal method, synthesis, microemulsion method Streszczenie Wysoka stabilność chemiczna, odporność na zmiany pH, ciśnienia i temperatury sprawiły, że tlenek cyrkonu znajduje szerokie zastosowanie w wielu dziedzinach. Jest stosowany w procesach uzdatniania wody i oczyszczania ścieków, a także w oczyszczaniu powietrza. W niniejszej pracy scharakteryzowano wybrane metody syntezy nanotlenku cyrkonu w fazie ciekłej. Wśród grupy tych metod wyróżnia się m.in. metodę mikroemulsji. Na podstawie danych literaturowych przedstawiono zalety i trudności związane ze stosowaniem poszczególnych metod, aby móc odpowiedzieć na pytanie, która metoda syntezy nanometrycznego tlenku cyrkonu, w fazie ciekłej, jest najkorzystniejsza. Autorzy wskazali również na pewne kierunki rozwojowe omówionych metod, które wiążą się m.in. ze zmianą polarności rozpuszczalnika i stosowaniem dodatków w formie polimerów.Słowa kluczowe: nanotlenek cyrkonu, metoda hydrotermalna, synteza, metoda mikroemulsji 110

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“…This complex phase evolution can be revealed by X-ray diffraction and it offers the possibility to view the evolution of the temperature-induced structural properties, thus, obtaining results upon the stability of the nanometric stabilised zirconia [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Thermal stability and field assisted sintering of cerium-doped YSZ ceramic nanoparticles obtained via a hydrothermal process

et al. 2017

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Abstract. Owing to its extraordinary range of properties, yttria-doped zirconia holds a unique place among the ceramic oxide systems. To improve the properties for some specific custom design applications, co-doping with other rare earth oxides such as ceria is needed. The aim of this paper is to identify the correlations between the phase composition evolution with increasing thermal treatment temperature in order to establish the thermal stability in connection with the ceria content and how does it influence the yttria-stabilised zirconia microstructure. The ZrO 2 -3Y 2 O 3 -nCeO 2 (n = 3, 6 and 9 wt.%) samples were obtained by a hydrothermal process and submitted to a thermal treatment up to 1600°C. Intensive characterization was performed via X-ray powder diffraction and EDX analysis. It was found that up to 400°C, a monophasic structure was formed. At higher temperatures tetragonal zirconia is formed as a major phase with the presence of secondary monoclinic and cubic phases, depending on the Ce content and thermal treatment temperature. Sintered compacts with densities up to 99.5% from the theoretical density were obtained starting from the 6%CeO 2 -3%Y 2 O 3 -ZrO 2 -nanostructured powders using a special field-assisted (FAST) sintering process. With increasing CeO 2 content to 9% only, tetragonal zirconia with 6-9 nm crystallite sizes is formed during the FAST sintering process.

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Synthesis and crystallization behavior of 3mol% yttria stabilized tetragonal zirconia polycrystals (3Y-TZP) nanosized powders prepared using a simple co-precipitation process

Cited by 72 publications

References 26 publications

Synthesis by coprecipitation of india-stabilized zirconia and codoping with MoO3, WO3, TaO2.5, or NbO2.5 for application as thermal barrier coatings

Synthesis by coprecipitation of india-stabilized zirconia and codoping with MoO3, WO3, TaO2.5, or NbO2.5 for application as thermal barrier coatings

Characteristics of selected methods for the synthesis of nanometric zirconium oxide – critical review

Thermal stability and field assisted sintering of cerium-doped YSZ ceramic nanoparticles obtained via a hydrothermal process

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