2000
DOI: 10.1016/s1359-6462(00)00353-5
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Combustion synthesis of Al2O3(-Cr2O3)-Cr cermets

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Cited by 12 publications
(8 citation statements)
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“…Moreover, aluminium and chromium oxides have the same crystal structures and are completely soluble, what may help to achieve a good bonding between the metal and oxide phases. 3 Alumina-chromium composites have been obtained using pressureless sintering, 1 hot pressing 4 and combustion synthesis, 5 processed from different forms and grain sizes of powders, including nanopowders, 6 The aim of this work was to obtain fully dense aluminachromium composites using an aluminium oxide nanopowder, and to characterise the microstructure and mechanical properties of Al 2 O 3 -Cr composites with different amounts of metal phase.…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, aluminium and chromium oxides have the same crystal structures and are completely soluble, what may help to achieve a good bonding between the metal and oxide phases. 3 Alumina-chromium composites have been obtained using pressureless sintering, 1 hot pressing 4 and combustion synthesis, 5 processed from different forms and grain sizes of powders, including nanopowders, 6 The aim of this work was to obtain fully dense aluminachromium composites using an aluminium oxide nanopowder, and to characterise the microstructure and mechanical properties of Al 2 O 3 -Cr composites with different amounts of metal phase.…”
Section: Introductionmentioning
confidence: 99%
“…The tensile strength s T has been calculated as equal to tensile stresses at the specimen center corresponding to the force at the failure point, P f , using the following theoretical formula, cf. Refs [22]: (1) where h and d are the height and diameter of Brazilian test specimens.…”
Section: Methodsmentioning
confidence: 99%
“…Maximum compressive force P f was directly measured in the tests and the corresponding tensile strength was calculated according to formula (1). The results of tensile strength of each case of holding/sintering time were obtained by triple strength measurement and next the mean value of s T has been calculated.…”
Section: Indirect Tensile Strength Testmentioning
confidence: 99%
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“…Algunos autores han introducido modificaciones en el sistema de aporte de calor para iniciar la combustión, como por ejemplo el uso de una mufla precalentada a 500 ºC para que la combustión tenga lugar en el interior de la misma a una temperatura constante en todos sus puntos (12,14), o la utilización de un microondas en sustitución de la placa calefactora (16)(17)(18)(19); en ambos casos se obtiene mayor homogeneidad durante el calentamiento, pero se sigue sin saber la temperatura que alcanza la llama.…”
Section: Síntesis Por Combustiónunclassified