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Spinel formation, reaction conditions and densification properties of magnesia-spinel composites
(Trans Tech Publications LTD, 2004)
Densification, reaction conditions and properties of densified MgO and spinel composites were examined using both pressureless sintering and hot-pressing. Initially fine (32 nm) MgO powder, either alone or blended with mum ...
Synthesis and sintering of cordierite at low temperature from kaolin and magnesium hydroxide
(Trans Tech Publications LTD, 2004)
Thermal reactions of ultrafine Mg(OH)(2) mixtures of ultrafine particles and kaolin mixtures were investigated to obtain cordierite at low temperatures. Magnesium hydroxide was precipitated from magnesium chloride (MgCl2) ...
Investigation of parameters affecting formation of mullite from kaolin
(Trans Tech Publications LTD, 2004)
This study aims to improve the understanding of formation of mullite from kaolin at low process temperature using different sintering regimes. The optimum parameters affecting mullite formation from kaolin such as sintering ...
Mg+2 and Ce+3 doped alpha-SiAlON ceramics
(Trans Tech Publications LTD, 2004)
In the present work, stabilization of MgO and CeO2 in alpha-SiAlON structure is studied. Mg and CeO2 were used in 50:50 molar ratios as additives. The mixture was sintered at 1830degreesC for 1 hour in gas pressure sintering ...
Microstructural evolution R-alpha-SiAlON ceramics (R=Y, Y+Sm and Sm)
(Trans Tech Publications LTD, 2004)
Yttrium or samarium doped alpha-SiAlON composition was sintered using gas pressure sintering through two different sintering procedures. One group of samples was heated up to 1800degreesC and then held for 1 h while another ...
Development of laminar type functionally graded SiAlON ceramics
(Trans Tech Publications LTD, 2004)
In order to combine high hardness with high toughness, laminar type (two layers) functionally graded (FGM) SiAlON ceramics were developed. In a previous study achieved by the same authors, presence of a sharp transition ...
Formation of alpha-SiAlON ceramics containing scandium
(Trans Tech Publications LTD, 2004)
alpha-SiAlON is able to accommodate cations into its crystal structure if the cations are sufficiently small in size, thus helping to reduce the volume of the remnant grain boundary phase after processing. Lutetium with ...
Anisotropic sintering shrinkage in alumina ceramics containing oriented platelets
(Wiley, 2006)
The effect of oriented alpha-Al2O3 platelets on densification and shrinkage behavior of tape-cast alpha-Al2O3 during solid-state sintering was studied using dilatometric sintering shrinkage experiments and microstructural ...
Production of coloured zircon pigments from zircon
(Elsevier Sci LTD, 2007)
Zircon (ZrSiO4) pigments are commonly used in the ceramic industry for glazes due to their high chemical stability and superior resistance to the dissolution during firing in glazes. These pigments are made by calcining a ...
Production of brown pigments for porcelain insulator applications
(Elsevier Sci LTD, 2006)
In this study, production of brown pigment for the ceramic insulator applications by using inexpensive natural raw materials or waste materials was undertaken. Different pigment compositions were designed, synthesised and ...