Slip Casting of ATZ Ceramics

Gregorová, Eva; Havrda, J.; Pabst, Willi; Kuneš, K.

doi:10.1002/9783527612765.c102

Cited by 3 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other authors have observed the same phenomenon in their experiments with Alumina toughened zirconia (ATZ). A similar fraction of monoclinic and tetragonal zirconia phases was detected in nontextured and textured samples of zirconia ceramic with different microtextures, which indicates that the femtosecond laser did not alter the crystal structure of zirconia ceramic [51,52]. Kern et al also reported positive results from x-ray diffraction experiments on zirconia ceramic surfaces before and after sintering.…”

Section: Discussionmentioning

confidence: 79%

Effects of surface topography through laser texturing on the surface characteristics of zirconia-based dental materials: surface hydrophobicity, antibacterial behavior, and cellular response

Ghalandarzadeh

Ganjali

Hosseini

2023

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

The continuous need for high-performance implants that provide significant biological properties has led to extensive research into the topographic patterns of bioceramics in recent years. Their excellent aesthetics, biocompatibility, low plaque affinity, and ability to reproduce a natural-looking appearance have contributed to their success in dentistry. 3 mol% Yttria-stabilized zirconia (3YSZ) is gaining popularity as a material for dental implants due to its excellent mechanical properties and minimal degradation when exposed to body temperature. However, such materials show limited biological and antibacterial performance for dental applications. The purpose of this work was to develop microtopographies on the surface of 3YSZ ceramic by laser ablation technique, in order to improve its biological response and antibacterial behaviors. Two types of microtextures, including micro-grooves and micro-channels geometries were fabricated onto the zirconia ceramics using the laser ablation technique. The effects of different microtextures on the wettability, biological and antibacterial behaviors of 3YSZ ceramics were studied. The results indicate that all of the microstructure patterns are capable of improving the performance of 3YSZ. Wettability is a decisive factor that determines the antibacterial performance of textured zirconia ceramics. The microtextured surfaces all display hydrophobic behavior, thus yielding an effective improvement of antibacterial performance for 3YSZ ceramics. Cell-surface interactions were assessed for 7 days on both zirconia textured surfaces and a nontextured control with pre-osteoblast MC3T3-E1 cells. The obtained results showed the positive influence of textured zirconia surfaces on cell biological response.

show abstract

Section: Discussionmentioning

confidence: 79%

Effects of surface topography through laser texturing on the surface characteristics of zirconia-based dental materials: surface hydrophobicity, antibacterial behavior, and cellular response

Ghalandarzadeh

Ganjali

Hosseini

2023

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

show abstract

“…Currently, moulding methods based on colloidal processes play the leading role in advanced ceramic-ceramic composites technology. Such technologies include tape casting [ 1 , 2 , 3 , 4 , 5 ], direct coagulation casting [ 6 , 7 , 8 , 9 , 10 ], slip casting [ 11 , 12 , 13 , 14 , 15 ], gel-casting [ 16 , 17 , 18 ], and centrifugal slip casting [ 19 , 20 , 21 , 22 ]. These methods make it possible to produce parts characterized by homogeneous compaction and microstructure in combination with suitable mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Al2O3/ZrO2 Materials as an Environmentally Friendly Solution for Linear Infrastructure Applications

et al. 2021

View full text Add to dashboard Cite

The present work deals with the evaluation of the effect of ZrO2 on the structure and selected properties of shapes obtained using the centrifugal slip casting method. The samples were made of alumina and zirconia. The applied technology made it possible to produce tubes with a high density reaching 99–100% after sintering. Very good bonding was obtained at the Al2O3/ZrO2 interphase boundaries with no discernible delamination or cracks, which was confirmed by STEM observations. In the case of Al2O3/ZrO2 composites containing 5 vol.% and 10 vol.% ZrO2, the presence of equiaxial ZrO2 grains with an average size of 0.25 µm was observed, which are distributed along the grain boundaries of Al2O3. At the same time, the composites exhibited a very high hardness of 22–23 GPa. Moreover, the environmental influences accompanying the sintering process were quantified. The impacts were determined using the life cycle analysis method, in the phase related to the extraction and processing of raw materials and the process of producing Al2O3/ZrO2 composites. The results obtained show that the production of 1 kg of sintered composite results in greenhouse gas emissions of 2.24–2.9 kg CO2 eq. which is comparable to the amount of emissions accompanying the production of 1 kg of Polyvinyl Chloride (PVC), Polypropylene (PP), or hot-rolled steel products.

show abstract

“…In the solid fugitive template based method, fugitive particles such as carbon particles, wheat particles, polymer beads, rice particles, polymer short fibres, crystals of organic molecules, etc. incorporated in a ceramic powder suspension are consolidated to produce the green body [8][9][10][11][12][13][14][15][16]. The fugitive particles in the green body assembly are subsequently removed by slow heating before sintering.…”

Section: Introductionmentioning

confidence: 99%

Effect of emulsion composition on gel strength and porosity in the preparation of macroporous alumina ceramics by freeze gelcasting

Vijayan

Narasimman

Prabhakaran

2015

Journal of Asian Ceramic Societies

View full text Add to dashboard Cite

Please cite this article in press as: S. Vijayan, et al., Effect of emulsion composition on gel strength and porosity in the preparation of macroporous alumina ceramics by freeze gelcasting, J. Asian Ceram. Soc. (2015), http://dx.a b s t r a c tThe freeze gelcasting of hydrogenated vegetable oil-in-aqueous alumina slurry (HVO-in-AAS) emulsions of HVO to AAS volume ratios in the range of 1.34-2.69 prepared from slurries of various alumina concentrations were studied to prepare macroporous ceramics of high porosity. The compressive strength (20-150 kPa) and Young's modulus (120-1550 kPa) of the gelled emulsion bodies increased with an increase in alumina slurry concentration and HVO to AAS volume ratio. Easy HVO removal from gelled emulsion bodies by extraction at room temperature with petroleum ether, a less toxic solvent, was achieved. The highest porosity achieved at a HVO to AAS volume ratio of 2.69 increased from 84 to 92.5% when the alumina concentrations in the slurry decreased from 30 to 10 vol.%. The cell size and cell interconnectivity of the ceramics depended on the alumina slurry concentration and HVO to AAS volume ratio. The Young's modulus of the macroporous ceramics modelled using the equation proposed by Gibson and Ashby showed large deviation in the model parameters, n and C, from the proposed values.

show abstract

Slip Casting of ATZ Ceramics

Cited by 3 publications

References 4 publications

Effects of surface topography through laser texturing on the surface characteristics of zirconia-based dental materials: surface hydrophobicity, antibacterial behavior, and cellular response

Effects of surface topography through laser texturing on the surface characteristics of zirconia-based dental materials: surface hydrophobicity, antibacterial behavior, and cellular response

Al2O3/ZrO2 Materials as an Environmentally Friendly Solution for Linear Infrastructure Applications

Effect of emulsion composition on gel strength and porosity in the preparation of macroporous alumina ceramics by freeze gelcasting

Contact Info

Product

Resources

About