Results 31 to 40 of about 5,819 (71)

Formation of surface defects by thermal shock method for the improved photocatalytic activity of ZnO nanoparticles

open access: yesJournal of Asian Ceramic Societies, 2020
Surface-modified ZnO photocatalysts with enhanced UVA-light-driven and visible-light-driven activities were synthesized by the thermal shock method with Cu(NO3)2 at different thermal shock temperatures (300 – 600°C).
Tien Khoa Le   +6 more
doaj   +1 more source

Síntesis y almacenamiento de carga de la nueva aleación polipirrol/poli(ácido maleico-olefina)

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2000
The influence that the electrosynthesis conditions of the polypyrrole/poly(maleic acid-co-olefin) blend have on the charge storage ability (amount of electrical charge stored (mC) per unit mass (mg) of electrogenerated polymer) has been analysed. This is
D´eramo, F., Otero, T. F.
doaj  

Bioactivity studies of calcium magnesium silicate prepared from eggshell waste by sol–gel combustion synthesis

open access: yesJournal of Asian Ceramic Societies, 2015
The present study focused on the synthesis of calcium magnesium silicate (akermanite, Ca2MgSi2O7) using eggshell biowaste (as calcium source), magnesium nitrate and tetraethyl orthosilicate (TEOS) as starting materials.
Rajan Choudhary   +2 more
doaj   +1 more source

Comportamiento mecánico y estudio in situ de la evolución del daño en el grafito y en un compuesto C/C a 77 y a 300 K

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2002
The mechanical properties at 77 K and at 300 K were determined in two polycristalline graphites with different microstructures and in a C/C composite.
Salazar, A., Pastor, J. Y., Llorca, J.
doaj  

Development of high-thermal-conductivity silicon nitride ceramics

open access: yesJournal of Asian Ceramic Societies, 2015
Silicon nitride (Si3N4) with high thermal conductivity has emerged as one of the most promising substrate materials for the next-generation power devices. This paper gives an overview on recent developments in preparing high-thermal-conductivity Si3N4 by
You Zhou   +5 more
doaj   +1 more source

Caracterización de una nueva membrana cerámica de microfiltración con soporte de tejido en acero inoxidable flexible

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 1999
In this work we present the characterization of a ceramic flexible membrane, made by SynthesechemieⓇ, with a nominal pore size of 0.45 μm. This membrane consists in an α-alúmina porous support which has an embedded stainless steel metallic network, onto ...
Palacio, L.   +3 more
doaj  

Estudio del régimen de pérdidas dieléctricas constantes en conductores iónicos con estructura de tipo pirocloro

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2012
We report on ac conductivity measurement of oxide ion conductors with composition Gd<sub>2</sub>(Zr<sub>y</sub>Ti<sub>1-y</sub>)<sub>2</sub>O<sub>7</sub> and a pyrochloretype structure, at ...
Díaz-Guillén, M. R.   +3 more
doaj   +1 more source

Materiales y técnicas para el acoplamiento mecánico optimo de piezocerámicas en aire

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2002
Great efforts have been made over the last years to avoid the use of coupling agents between ultrasonic transducers and sample materials for NDE applications.
Gómez Álvarez-Arenas, T. E.   +1 more
doaj  

La transición de fase I4/mcm→Pm3m en Sr0.5Ba0.5HfO3-δ

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2001
The effect of partial substitution of cations in AMO3 compounds have been studied because the physical properties and applications of these materials can be improved. In particular we are interested in the Sr1-xBaxHfO3 family.
Lamas, D.   +4 more
doaj  

Análisis de la resistencia a la corrosión de barras corrugadas de acero inoxidable en medios acuosos que simulan el hormigón

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2004
The corrosion behaviour of stainless steel reinforced bars used in civil engineering was studied. Different electrochemical tests were performed using several stainless steel bars (austenitic and duplex), hot and cold rolled, in the presence of a ...
Belzunce, F. J.   +2 more
doaj  

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