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Calorimetric Study of Interaction Between Oxygen and β-Al2O3, β-Al2O3+Au and β-Al2O3+Pt
Journal of Thermal Analysis and Calorimetry, 2002In an attempt to improve the understanding of the electrochemical effects observed on an original potentiometric gas sensor, interactions of oxygen with the device were investigated. These calorimetric measurements have evidenced the existence of a weakly bounded endothermal oxygen species.
Guillet, Nicolas +2 more
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The Journal of Chemical Thermodynamics, 2013
Abstract All available thermodynamic and phase diagram data for the condensed phases of the (Al 2 O 3 + Na 2 O), (Al 2 O 3 + Na 2 O + SiO 2 ), and (Al 2 O 3 + Na 2 O + AlF 3 + NaF) systems have been critically assessed. Model parameters for solid solutions and a single set of parameters for the liquid solution in the binary, ternary, and ternary ...
Guillaume Lambotte, Patrice Chartrand
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Abstract All available thermodynamic and phase diagram data for the condensed phases of the (Al 2 O 3 + Na 2 O), (Al 2 O 3 + Na 2 O + SiO 2 ), and (Al 2 O 3 + Na 2 O + AlF 3 + NaF) systems have been critically assessed. Model parameters for solid solutions and a single set of parameters for the liquid solution in the binary, ternary, and ternary ...
Guillaume Lambotte, Patrice Chartrand
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Structural and electronic properties of Ga2O3-Al2O3 alloys
Applied Physics Letters, 2018Ga2O3 is emerging as an important electronic material. Alloying with Al2O3 is a viable method to achieve carrier confinement, to increase the bandgap, or to modify the lattice parameters.
H. Peelaers +3 more
semanticscholar +1 more source
ACS Catalysis, 2019
The Ag/Al2O3 catalyst possesses high activity for selective catalytic oxidation of ammonia (NH3–SCO), and its activity could be significantly improved by H2 pretreatment.
Fei Wang +6 more
semanticscholar +1 more source
The Ag/Al2O3 catalyst possesses high activity for selective catalytic oxidation of ammonia (NH3–SCO), and its activity could be significantly improved by H2 pretreatment.
Fei Wang +6 more
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Journal of Membrane Science, 2011
Abstract Al2O3, Al2O3–SiO2 and Al2O3–kaolin hollow fiber precursors were prepared by a wet-spinning method using polyethersulfone (PES), Al2O3, SiO2 and kaolin. The hollow fiber membranes were obtained after a preheating and sintering combining process.
Ling-Feng Han +4 more
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Abstract Al2O3, Al2O3–SiO2 and Al2O3–kaolin hollow fiber precursors were prepared by a wet-spinning method using polyethersulfone (PES), Al2O3, SiO2 and kaolin. The hollow fiber membranes were obtained after a preheating and sintering combining process.
Ling-Feng Han +4 more
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Impact Testing of Al2O3 and SiCw/Al2O3 Ceramics
1994A bar impact test procedure was used to study spallation of Al2O3 bars and dynamic fracture of Al2O3 and SiCw/Al2O3 bars. Fractography analysis of the spalled surface showed extensive intergranular fracture (90 to 95% area). Dynamic fracture studies of precracked Al2O3 and SiCw/Al2O3 bars showed that the dynamic initiation fracture toughness, KId, and ...
LR Deobald, AS Kobayashi
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2008
A liquidus surface for the Al2O3-rich corner of the Al2O3???HfO2???Gd2O3 system is constructed. No ternary compounds were found in the system under study. The ternary transformation point and the ternary eutectic point are discovered. The ternary eutectic Al2O3???GdAlO3???F-HfO2 exhibits the cooperative phase growing mechanism which allows one to ...
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A liquidus surface for the Al2O3-rich corner of the Al2O3???HfO2???Gd2O3 system is constructed. No ternary compounds were found in the system under study. The ternary transformation point and the ternary eutectic point are discovered. The ternary eutectic Al2O3???GdAlO3???F-HfO2 exhibits the cooperative phase growing mechanism which allows one to ...
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2009
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?????????????? ?????????? ?????????????? ??- Al2O3 ???? ?????????????????????? ???????????????????? ???? ?????????????????? ???????????????? ?????????????????????????????????????? ?????????????? ?????? + 2 % Zn. ????????????????, ???? 30 % ???????????? ???????????????? ?? ???????? ?????????????????????? ??????????????????, ???? ???????? ????????????????
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Surface, grain-boundary and interfacial energies in Al2O3 and Al2O3-Sn, Al2O3-Co systems
Journal of Materials Science, 1985Using the multiphase equilibrium method for the measurement of contact angles, the surface and grain-boundary energies of polycrystalline Al2O3 in the temperature range of 1473 to 1923 K were determined. Linear temperature functions were obtained by extrapolation for both quantities between absolute zero and the melting point of Al2O3.
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2011
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?? ???????????????????????????? ?????????????????????? ?????????????? ?????????????????? ?????????????????? ?????????????????? ???????????????????????????? ???????? (?????????????????????????? Rmax ?? ?????????????? ?????????????????????? ???????? F) ?????????????????? ???????????????????? ?????????????????????????????????? ???????????????????????? ????
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