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Creep and microstructural evolution at high temperature of liquid-phase-sintered silicon carbide
(The American Ceramic Society, 2006)
The compressive creep characteristics at 1625°C of liquid-phase-sintered silicon carbide ceramics containing 5 and 15 wt% of crystalline Y3Al5O12 (YAG) as the secondary phase were studied. In the two cases, strains between ...
Dissociation of basal dislocations in 4H–SiC single crystals deformed around the transition temperature
(Wiley, 2013)
The dislocation microstructure was studied in 4H–SiC samples plastically deformed by basal slip activation around the transition temperature (1000°C–1100°C). Dissociation of basal dislocations takes place over a wide ...
Microestructura y propiedades mecánicas a altas temperaturas del α-SiC sinterizado con fase líquida de Y2O3-Al2O3
(Sociedad Española de Cerámica y Vidrio, 2005)
Muestras de α-SiC han sido sinterizadas con fase líquida (LPS) a 1950 ºC, en atmósfera de argón y tiempos de procesado
entre 1 y 7 horas. Mediante microscopia electrónica de barrido (SEM) se ha caracterizado la microestructura, ...
Influence of the processing route on the carbon nanotubes dispersion and creep resistance of 3YTZP/SWCNTs nanocomposites
(The American Ceramic Society, 2014)
3YTZP matrix composites containing 2.5 vol% of single-walled carbon nanotubes (SWCNT) were fabricated by Spark Plasma Sintering (SPS) at 1250°C, following different processing routines with the aim of optimizing the SWCNTs ...
High-temperature deformation mechanisms in monolithic 3YTZP and 3YTZP containing single-walled carbon nanotubes
(Wiley, 2015)
Monolithic 3YTZP and 3YTZP containing 2.5 vol% of single-walled carbon nanotubes (SWCNT) were fabricated by Spark Plasma Sintering (SPS) at 1250°C. Microstructural characterization of the as-fabricated 3YTZP/SWCNTs composite ...
Comparative study on high temperature mechanical behavior in 3YTZP containing SWCNTs or MWCNTs
(Elsevier, 2016)
Effects on mechanical properties of the presence of either single-walled carbon nanotubes (SWCNTs) or multi-walled carbon nanotubes (MWCNTs) in a 3YTZP matrix have been investigated in this work. Thus, monolithic 3YTZP and ...
Creep study on alumina and alumina/SWCNT nanocomposites
(Elsevier, 2018)
Alumina and alumina/SWCNT nanocomposites have been sintered by spark plasma sintering, obtaining relative densities higher than 99%. Microstuctural characterization revealed a grain microstructure in the submicron range, ...
Analysis of a kink pair model applied to a peierls mechanism in basal and prism plane slips in sapphire (α-Al2O3) deformed between 200° and 1800°C
(The American Ceramic Society, 2008)
A model based on dislocation glide controlled by the nucleation and propagation of kink pairs in a high Peierls stress crystal is revisited and modified to account for changes in dislocation densities and segment lengths ...
Chromium hardening and Peierls mechanism for basal slip in sapphire (α-Al2O3) at temperatures between 900 and 1500 °C
(European Ceramic Society, 2007)
The plastic deformation of Cr3+-doped α-Al2O3 (ruby) with four distinct Cr concentrations has been studied at temperatures between 900 and 1500 °C. The mechanical tests indicate that the processes of dislocation multiplication ...
Dislocation microstructure of 4H–SiC single crystals plastically deformed around the transition temperature
(The American Ceramic Society, 2012)
4H–SiC specimens were plastically deformed by basal slip at temperatures between 800 °C and 1300 °C. Samples were investigated by means of transmission electron microscopy and high-resolution techniques. The accepted ...