Results 161 to 170 of about 2,006 (195)

Alumina gelcasting by using HEMA system

Journal of the European Ceramic Society, 2005
Abstract A low-toxicity gel system based on the polymerization of low-toxicity 2-hydroxyethyl methacrylate (HEMA) was successfully developed. In order to obtain high solid loading ceramic slurry with low viscosities, a polyelectrolyte dispersant was selected.
Kai Cai, Yong Huang, Jinlong Yang
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Gelcasting of aqueous mesocarbon microbead suspension

Carbon, 2004
Gelcasting, an in situ consolidation colloid forming process, is promising for the manufacture of structural ceramics with various shapes. In this case, the gelcasting process was adopted to obtain carbon artifacts with complex shapes. The mesocarbon microbead (MCMB) that has self-sintering property was chosen as the starting material.
Fei Li, Hong-jun Ni, Jun Wang, Bao-de Sun, Zhao-hui Du   +4 more
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Gelcasting of Magnesium Aluminate Spinel Powder

Journal of the American Ceramic Society, 2009
A stoichiometric MgAl 2 O 4 spinel (MAS) powder was processed in aqueous media and consolidated by gelcasting from suspensions containing 41–45 vol% solids loading.
Ibram Ganesh, Susana M. Olhero, Paula M. C. Torres, José M. F. Ferreira   +3 more
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Green Machining of Gelcast Ceramic Materlals

2008
Ceramic green bodies prepared by gelcasting were shown to be readily machinable using WC cutting tools. Samples of alumina and silicon nitride were examined. It was found that a gelcasting formulation which uses a high molecular weight cross-linking agent produces a green body having superior machining characteristics.
Nunn, S.D., Kirby, G.H.
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Aqueous Gelcasting Synthesis of Zirconium Diboride

Key Engineering Materials, 2014
Zirconium diboride (ZrB2) ceramics were synthesized by Aqueous gelcasting method sintering effects of the additives were examined. The dispersion and rheological properties behavior of water-based gelcasting ZrB2-4wt.%B4C suspensions were characterized by zeta potential and viscosity measurements, respectively.
Jun Ping Wang, Jing Wang, Xiao Bing Zhou, Lei Jing, Penchal Reddy Matli, Qing Huang   +5 more
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Gelcasting of Zirconia Using Agarose

Journal of the American Ceramic Society, 2006
Gelcasting of zirconia with agarose as a gelling agent was evaluated, and the rheological behavior of the suspensions was studied. For certain compositions, a viscosity low enough for the suspensions to be processed as well as a sufficient wet green strength to avoid deformation of cast components due to mechanical stresses was ...
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Aqueous gelcasting of yttrium iron garnet

Journal of the European Ceramic Society, 2013
Abstract N,N-Dimethylacrylamide (DMAA)/N,N′-methylenebis (acrylamide) (MBAM) system was used in the aqueous YIG (yttrium iron garnet) slurry. YIG powders were prepared by using Y 2 O 3 and Fe 2 O 3 as raw materials through the traditional oxide method.
Weiliang Xu, Jian Yang, Yulong Jin, Tai Qiu   +3 more
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Production of yttria ceramics by gelcasting

2011
The production of yttria ceramics by green-gelcasting technique was developed through: (1) optimization of aqueous yttria slurries; (2) optimization of the gelcasting process; (3) thermal treatments and characterization of the final microstructures. Different dispersants were tested. Zeta potential characterization of the dispersed state was performed.
Alex Sangiorgi, Anna Luisa Costa, Paola Pinasco, Alessandra Sanson, Barbara Ballarin   +4 more
openaire   +3 more sources

Gelcasting of through-pore hydroxyapatite ceramics

Journal of the European Ceramic Society, 2019
Abstract Although the near-net-shape forming ability of gelcasting has been well demonstrated, current attention mainly was focused on manufacturing compact ceramics. In this work we demonstrated that the combination of the gelcasting technique and the ceramic sintering process could prepare the near-net-shape through-pore hydroxyapatite (HAP ...
Zhen Wu, Zhengren Zhou, Youliang Hong
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Thermogravimetric characterization of gelcast alumina composites

Journal of Thermal Analysis, 1997
Gelcasting is a new method for forming advanced ceramics based on obtaining intermediary gels promoted by polimerization “in situ” within the ceramic slurry. Gelcast composites of an ALCOA A-1000 alumina and the copolymer obtained using acrylamide and N,N′-metylene-bisacrylamide as monomers were characterized by thermogravimetry.
J. Dweck, R. Fischer, E. Fischer
openaire   +1 more source