Results 21 to 30 of about 5,819 (71)

Crucial effect of SiC particles on in situ synthesized mullite whisker reinforced Al2O3-SiC composite during microwave sintering

open access: yesProcessing and Application of Ceramics, 2017
Mullite whisker reinforced Al2O3-SiC composites were in situ synthesized by microwave sintering at 1500°C for 30min. The influence of SiC particle size on heating process and properties of Al2O3-SiC composite were investigated. The XRD and SEM techniques
Meng Wei   +6 more
doaj   +1 more source

Propiedades mecánicas de cerámicos eutécticos Al2O3-ZrO2 (Y2O3) y Al2O3-YAG procesados por solidificación direccional

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2005
The flexure strength of directionally-solidified Al2O3-ZrO2(Y2O3) and Al2O3-Y3Al5O12 eutectic ceramic composites processed by the laser-heating floating zone method was studied from 25ºC to 1427ºC.
de Francisco, I.   +5 more
doaj  

Structure and electrical properties of (Bi,Na)0.94Ba0.06Ti1-x(Mg1/3Nb2/3)xO3 ceramics [PDF]

open access: yesProcessing and Application of Ceramics, 2018
In this work the effect of pseudo-cation (Mg2+1/3Nb5+2/3)4+ addition on Ti-site of (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramics, having general formula (Bi,Na)0.94Ba0.06Ti1-x(Mg1/3Nb2/3)xO3 (0 ≤ x ≤ 1), on their structural and electrical properties was ...
Ashutosh Prasad   +3 more
doaj   +1 more source

Aplicación de un material vitrocerámico a la biorremediación de metales pesados

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2004
In this study, a glassceramic material with hydroxyapatite phase was manufactured from industrial and urban wastes. On this material, biofilms from the microorganisms usually appearing in wastewater were developed.
García, A. M.   +5 more
doaj  

Preparación y propiedades de materiales cerámicos bioinertes en el sistema Al2O3-TiO2-SiO2

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 1998
Very fine and sinterable ceramic powders (100-600 nm) in the system Al2O3-TiO2-SiO2 were obtained by the method of cohydrolisis from organo-metallic precursors.
Boccaccini, A. R.   +4 more
doaj  

Production of Si3N4 porous beads via carbothermal reduction and nitridation technique

open access: yesJournal of Asian Ceramic Societies, 2020
Si3N4 porous beads were produced from direct carbothermal reduction and nitridation of spheres composed of carbon+SiO2 mixtures. A simple one–step sol–gel templating technique was used to prepare carbon+SiO2 (molar ratio of carbon/SiO2 was set as 4 ...
Gülsüm Topateş, Ayse Kalemtaş
doaj   +1 more source

Corrosión atmosférica de metales en condiciones climáticas extremas

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2000
This paper analyses the influence of extreme climatic conditions on the atmospheric corrosion of metals. This corrosion phenomenon is determined mainly by the time that moisture is retained on the metallic surface (time of wetness), the presence of ...
Chico, B.   +2 more
doaj  

Step distribution of Yb filling fraction during microstructural evolution in skutterudites

open access: yesJournal of Advanced Ceramics, 2019
To achieve a better material for thermoelectric power generation device, filled skutterudite Yb0.3Co4Sb12 samples were fabricated by melting–quenching–annealing–spark plasma sintering (SPS) method.
Jing Mei   +7 more
doaj   +1 more source

Characterization and evaluation of porous hydroxyapatite synthesized by oil-in-water method as carrier of donepezil for the preventive of Alzheimer’s disease by controlled release

open access: yesJournal of Asian Ceramic Societies, 2020
Alzheimer’s disease (AD) is the most common cause of dementia. Patients are generally to forget taking pills because of memory loss or to skip medication due to side effects; that might stop the medication and affect the results of the treatment. In this
Chih-Hsiang Fang   +5 more
doaj   +1 more source

Study of a Mixed Alkaline–Earth Effect on Some Properties of Glasses of the CaO-MgO-Al2O3-SiO2 System

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2007
In the present work, we studied a “Mixed Alkaline–Earth Effect”, i.e. the non-linear behaviour showed by the glass transition temperature as well as by the compressive strength of glasses of the CaO-MgO-Al2O3-SiO2 system, when a part of the CaO contained
Valle-Fuentes, J. F.   +4 more
doaj  

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