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Toplam kayıt 448, listelenen: 81-90
Production of blue willemite based pigments by using ZnO powder produced from metal slags
(Trans Tech Publications LTD, 2004)
In this study, production of pigments by adding different amount of Co and calcination at different temperatures were under-taken. Co-willemite blue pigments were produced by using ZnO powders produced from metal slags. ...
Optimization of ?-sialon microstructure by heat treatment
(2008)
Nd-doped ?-SiAlON starting composition (Nd0.33Si 9.38Al2.62O1.62N14.38) was prepared by gas pressure sintering at 1825°C for 3 hrs. In order to explore the effect of post heat treatment on the developments of elongated ...
Chemical, morphological, and kinetic study of lead extraction from the Koni Mansur polymetallic deposit
(Elsevier Science BV, 2019)
Located in the north of Tajikistan, the Koni Mansur is a rich polymetallic deposit that besides other metals has high concentration of lead-containing mineral galena. The hydro metallurgical extraction of lead from the ...
Effect of activators and calcination on luminescence properties of åkermanite type phosphors
(Scientific Publishers, 2015)
Ákermanite type Ca2MgSi2O7 phosphors activated with different types of rare earths have been synthesized through a solid state reaction method under weak reducing atmosphere and/or open atmosphere. The phase properties of ...
Wear behaviour of alpha- and alpha/beta-SiAlON ceramics stabilized with Nd2O3 and Y2O3
(Elsevier Sci LTD, 2009)
alpha- and alpha/beta-SiAlON compositions, doped with Y2O3 or Nd2O3, were densified by gas pressure sintering (GPS). The wear and mechanical properties of the materials were investigated and compared to beta-Si3N4 materials. ...
Environmentally friendly material: Hexagonal boron nitride
(2016)
Importance of environmental issues has increased every year and several global summits were held on this subject. As a result, research efforts are focused on environmentally friendly materials, reducing energy usage and ...
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 ...
Microstructural Characterisation and Investigation of the Effects of ZrSiO4-Y2O3 Additions on Corrosion Behaviour of MgO-Spinel Composite Refractories
(Trans Tech Publications LTD, 2012)
Corrosion resistance of MgO-Spinel (M-S) composite refractories containing various amounts of ZrSiO4-Y2O3 constituents was investigated. Density and open porosity values were measured and evaluated. Corrosion tests of ...
Synchrotron texture analysis of thick BiFeO 3-PbTiO 3 layers synthesised by tape casting using Aurivillius and non-Aurivillius templates
(2012)
The solid solution between bismuth ferrite and lead titanate (xBiFeO 3-(1-x)PbTiO 3 or BFPT) possesses a morphotropic phase boundary (MPB) between the rhombohedral and tetragonal forms at x=0.7. It is of interest to ...
Usability of industrial ashes in cement production as pozzolanic materials
(Minerals, Metals & Materials Soc, 2006)
In the present study the utilization of coal ashes that appear at the end of firing process of brick production in cement pastes was examined. Ashes with three different particle sizes of 75 gm, 106 pm and 150 gm were used ...