Results 331 to 340 of about 229,191 (387)

Creep behaviour of alumina, zirconia and zirconia-toughened alumina

Journal of the European Ceramic Society, 1997
no ...
Chevalier, Jérome, Olagnon, Christian, Fantozzi, Gilbert, Gros, H   +3 more
openaire   +2 more sources

Zirconia nanotubes

Chemical Communications, 1997
Hollow nanotubes of zirconia as well as of yttria-stabilized zirconia are successfully prepared by first coating the carbon nanotubes appropriately with the oxidic material and then burning off the carbon of the template.
Rao, CNR, Satishkumar, BC, Govindaraj, A
openaire   +1 more source

Surface characterization of zirconia, holmium oxide/zirconia and sulfated zirconia catalysts

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2006
Abstract Zirconia-supported holmium oxide, as well as their sulfated catalysts using (NH 4 ) 2 SO 4 were prepared by wet impregnation and calcined at different temperatures. The samples thus obtained were subjected to bulk and surface texture analysis using X-ray powder diffractometry (XRD) and N 2 -sorptiometry, respectively.
openaire   +1 more source

Coloured zirconia

Crystal Research and Technology, 1994
AbstractThis paper deals with the growth of coloured zirconium oxide crystals, cubic stabilized with yttrium oxide. The host material–zirconia–is colourless. To generate colourations minor concentrations of 3d‐ and 4f‐elements are incorporated into the lattice.
H. Römer, K.‐D. Luther, W. Assmus
openaire   +1 more source

Nature of hydrous zirconia and sulfated hydrous zirconia

Catalysis Today, 1994
Abstract The structure of crystalline hydrous zirconias and their methods of formation are described. A mechanism for the hydrolytic polymerization of Zr IV to obtain the several forms of hydrous oxide is presented. The method by which sulfate ion binds to the surface of zirconia particles is explored.
A. Clearfield, G.P.D. Serrette, A.H. Khazi-Syed   +2 more
openaire   +1 more source

Zirconia particles

2016
Porous zirconia or zirconium-containing particles, methods of making such particles and methods of using such particles including modifications to the surface of the particles are described. The method comprises heating zirconia particles to provide a substantially homogeneously liquid melt, quenching the particles of melt to effect spinodal ...
Gani, Mary Susan Jean, Hans-Jurgen Wirth, Aguilar, Marie Isabel, Hearn, Milton Thomas William, Vanselow, Donald George, Cheang, Philip Hong Ning, Kjell-Ove Eriksson   +6 more
openaire   +1 more source

ZIRCONIA REFRACTORIES

Journal of the American Ceramic Society, 1923
ABSTRACT Outline of physical properties of zirconium ore. Mention of zirconia laboratory ware and method of manufacture ...
openaire   +1 more source

Evaluation of adhesion of Streptococcus mutans, plaque accumulation on zirconia and stainless steel crowns, and surrounding gingival inflammation in primary molars: randomized controlled trial

Clinical Oral Investigations, 2020
M. Mathew, S. Samuel, A. Soni, K. Roopa
semanticscholar   +1 more source

Zirconia in biomedical applications

Expert Review of Medical Devices, 2016
The use of zirconia in medicine and dentistry has rapidly expanded over the past decade, driven by its advantageous physical, biological, esthetic, and corrosion properties. Zirconia orthopedic hip replacements have shown superior wear-resistance over other systems; however, risk of catastrophic fracture remains a concern.
Yen-Wei, Chen, Joelle, Moussi, Jeanie L, Drury, John C, Wataha   +3 more
openaire   +2 more sources

Retrievability of implant-supported zirconia restorations cemented on zirconia abutments

The Journal of Prosthetic Dentistry, 2018
Retrievability of implant-supported restorations is important. Data are lacking for cemented zirconia crowns on zirconia abutments.The purpose of this in vitro study was to investigate the influence of different cements and marginal discrepancy on the retrievability of implant-supported zirconia crowns.
Andrea, Lennartz, Andrea, Dohmen, Shaza, Bishti, Horst, Fischer, Stefan, Wolfart   +4 more
openaire   +2 more sources