Preparation of transparent Y2O3 ceramic by slip casting and vacuum sintering

Huo, Di; Zheng, Yanchun; Sun, Xudong; Li, Xiaodong; Liu, Shaohong

doi:10.1016/s1002-0721(10)60639-4

Cited by 29 publications

(11 citation statements)

References 17 publications

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“…Grain size homogeneity leads to uniform density that can minimize the formation of pores throughout the 3YSZ microstructure. The consolidation technique used, when forming the green body is important to determine the grain size homogeneity of the sintered product (Huo et al, 2012;Mouzon et al, 2008) compared two consolidation techniques, namely, uniaxial pressing and slip casting. They reported that slip casting produced a sample with better packing homogeneity.…”

Section: Introductionmentioning

confidence: 99%

Development of Translucent Zirconia for Dental Crown Applications

Theng

Muchtar²,

Yahaya³

et al. 2015

Asian J. of Scientific Research

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Zirconia-based dental ceramic is widely used for crown restoration, because of its superior mechanical properties and favorable biocompatibility. However, yttria-stabilized tetragonal zirconia (3YSZ), which is used in most dental crown restorations, has low translucency. This characteristic is unfavorable and results in low aesthetic quality of dental restoration. In this study, translucent 3YSZ dental ceramics were fabricated using nano-sized powder (20 nm) and high-temperature sintering (1500°C). The green bodies were slip casted and consolidated with cold iso-static pressing to create compact bodies. During the slip casting process different amounts of dispersing agent Polyethyleneimine (PEI) (0.2, 0.4, 0.6 and 0.8 wt%), were used to prevent agglomerates and create homogeneous suspensions. A minute amount (0, 0.1, 0.2, 0.3 and 0.4 wt%) of alumina was added into the suspension as sintering aid. The translucency or light transmittance of 3YSZ specimens was measured by an ultraviolet-visible spectrometer. Results showed that the 3YSZ specimen with 0.4 wt% alumina and 0.4 wt% PEI exhibited the highest light transmittance. The specimen also had larger grain size, because of excessive grain growth. The Vickers hardness of the specimens was insignificantly affected by the amount of alumina and PEI addition.

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Section: Introductionmentioning

confidence: 99%

Development of Translucent Zirconia for Dental Crown Applications

Theng

Muchtar²,

Yahaya³

et al. 2015

Asian J. of Scientific Research

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“…The nanometer-sized oxide particles represent a class of materials with important applications in numerous fields of industry ranging from catalysis1, nanofluids2, advanced ceramics3, paints4, mining and soil5, gas sensors6, UV absorption materials7, cement8, food9 and cosmetics10, and numerous others1112131415. Nanostructured alumina is one of the most commonly used, extensively studied ceramic oxides.…”

mentioning

confidence: 99%

Direct Visualization of the Hydration Layer on Alumina Nanoparticles with the Fluid Cell STEM in situ

Firlar

Çınar

Kashyap

et al. 2015

Sci Rep

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Rheological behavior of aqueous suspensions containing nanometer-sized powders is of relevance to many branches of industry. Unusually high viscosities observed for suspensions of nanoparticles compared to those of micron size powders cannot be explained by current viscosity models. Formation of so-called hydration layer on alumina nanoparticles in water was hypothesized, but never observed experimentally. We report here on the direct visualization of aqueous suspensions of alumina with the fluid cell in situ. We observe the hydration layer formed over the particle aggregates and show that such hydrated aggregates constitute new particle assemblies and affect the flow behavior of the suspensions. We discuss how these hydrated nanoclusters alter the effective solid content and the viscosity of nanostructured suspensions. Our findings elucidate the source of high viscosity observed for nanoparticle suspensions and are of direct relevance to many industrial sectors including materials, food, cosmetics, pharmaceutical among others employing colloidal slurries with nanometer-scale particles.

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“…The simple chemical reactions at the base of the process are triggered when the precursors are brought into contact with water. To prepare the pure zirconia powders [37][38][39][40][41], the precursor used is zirconium n-propoxide (Zr(OC 3 H 7 ) 4 , 70% diluted in n-PrOH) [42]. Sol-gel synthesis can also be carried out to obtain zirconia powders doped with 3% of Yttria [43].…”

Section: Zirconia Nanopowder Synthesesmentioning

confidence: 99%

Nanostructured Pure and Doped Zirconia: Synthesis and Sintering for SOFC and Optical Applications

Prakasam¹,

Valsan²,

Lu³

et al. 2018

Sintering Technology - Method and Application

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Zirconia is a multifunctional material with potential applications in wide domains. Rareearth doped zirconia and stabilized zirconia yield interesting properties based on the phase transitions induced by the sintering conditions. Zirconia nanopowders were prepared by hydrothermal technique. Synthesis methods of zirconia with various rare earths are discussed here. An overview of the sintering of zirconia-based ceramics is presented in particular for SOFC and sensors and optical applications.

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Preparation of transparent Y2O3 ceramic by slip casting and vacuum sintering

Cited by 29 publications

References 17 publications

Development of Translucent Zirconia for Dental Crown Applications

Development of Translucent Zirconia for Dental Crown Applications

Direct Visualization of the Hydration Layer on Alumina Nanoparticles with the Fluid Cell STEM in situ

Nanostructured Pure and Doped Zirconia: Synthesis and Sintering for SOFC and Optical Applications

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