Results 31 to 40 of about 131,978 (215)

Colloidal stability of Ni(OH)₂ in water and its dispersion into a ceramic matrix from the reaction media to obtain Ni/Al₂O₃ materials

Boletín de la Sociedad Española de Cerámica y Vidrio, 2014
Ni/Al₂O₃ composites have been fabricated by slip casting of concentrated Ni(OH)₂/Al₂O₃ suspensions and subsequent in situ reduction to metallic nickel during sintering.
Cabanas-Polo, S. , Ferrari, B. , Sánchez-Herencia, A. J.   +2 more
doaj   +1 more source

Influence of the design on the thermal response of press-fit diodes: An infrared thermographic study

Results in Physics, 2021
A critical effect in the field of the power semiconductors is their heating processes under high currents regime, in the order of amperes. The thermal characterization in working conditions is not always an easy task, and its over/underestimation can ...
A. Moure, A. Serrano, S. Román-Sánchez, I. Lorite, J.F. Fernández   +4 more
doaj   +1 more source

Thermal response of active Si in press-fit rectifier diodes by confocal Raman microscopy: Influence of diode design and technology

Journal of Materials Research and Technology, 2022
Overheating resulting from the circulation of high electric currents (in the order of tens of amperes) that some electronic devices undergo when they are in operation, can induce structural modifications such as mechanical stresses that could reduce ...
S. Román-Sánchez, A. Serrano, A. del Campo, I. Lorite, J.F. Fernández, A. Moure   +5 more
doaj   +1 more source

Stress dynamics during O-T phase transitions in lead-free KNN-based piezoelectric ceramics

Materials & Design, 2023
In this study, we have investigated the stress dynamics arising from the Orthorhombic-Tetragonal Polymorphic Phase Boundary (PPB) in lead-free potassium sodium niobate (KNN)-based ceramics and its temperature dependence, as a means to elucidate the ...
A. Moure, P. Val-Gómez, A. del Campo, J.F. Fernández, F. Rubio-Marcos   +4 more
doaj   +1 more source

Thermal conduction in three-dimensional printed porous samples by high resolution infrared thermography

Open Ceramics, 2020
The thermal conductivity (κ) is a key parameter that defines many of the technological uses of three-dimensional (3D) porous architectures. Despite the variety of methods for determining κ, problems generally arise when researchers try to apply them to ...
D. Muñoz Codorníu, J.J. Moyano, M. Belmonte, M.I. Osendi, P. Miranzo   +4 more
doaj   +1 more source

Densification of lightweight aluminum borate ceramics by direct sintering of milled powders

Journal of Asian Ceramic Societies, 2018
Dense aluminum borate (Al18B4O33) materials were processed by simple milling-sintering of aluminum borate powders obtained by reacting calcined alumina and fine boric acid at temperatures of around 600–800ºC.
M.F. Hernández, G. Suárez, C. Baudin, P. Pena Castro, E.F. Aglietti, N.M. Rendtorff   +5 more
doaj   +1 more source

Fuel effect on solution combustion synthesis of Co(Cr,Al)2O4 pigments

Boletín de la Sociedad Española de Cerámica y Vidrio, 2017
The fuel effect on the synthesis of a ceramic pigment with a composition CoCr2−2ΨAl2ΨO4 (0 ≤ Ψ ≤ 1) by means of solution combustion synthesis process (SCS) has been studied.
Jessica Gilabert, Maria Dolores Palacios, Vicente Sanz, Sergio Mestre   +3 more
doaj   +1 more source

The main role of the ZrO2–MgO–CaO and ZrO2–MgO–CaO–SiO2 systems in the field of refractories

Boletín de la Sociedad Española de Cerámica y Vidrio, 2022
The increasing severity of the working conditions of refractories together with the necessity of available and economically feasible raw materials have changed the design approaches towards materials experiencing “in situ” modifications during use.The ...
Carmen Baudín, Pilar Pena
doaj   +1 more source

Relaciones microestructura-comportamiento mecánico en materiales de alúmina-hexaluminato cálcico

Revista de Metalurgia, 2001
Se ha modificado el hábito de crecimiento de grano en materiales densos de alúmina mediante la adición de hexaluminato calcico (CA6). Con objeto de obtener una óptima dispersión de la segunda fase, se han utilizado rutas coloidales de procesamiento.
A. J. Sánchez-Herencia, R. Moreno, C. Baudín   +2 more
doaj   +1 more source

Precise Tuning of the Nanostructured Surface leading to the Luminescence Enhancement in SrAl2O4 Based Core/Shell Structure

Scientific Reports, 2017
Intensive research has been focused on the synthesis of long-lasting SrAl2O4:EuDy in luminescent materials field. Traditionally, SrAl2O4:EuDy is synthesized in bulk form by solid state.
Rocío Estefanía Rojas-Hernandez, Fernando Rubio-Marcos, Aida Serrano, Adolfo Del Campo, José Francisco Fernandez   +4 more
doaj   +1 more source