11 Result(s)

Article

Synthesis and characterization of BaSn(OH)₆ and BaSnO₃ acicular particles

The synthesis of BaSn(OH)₆ acicular crystals by precipitation at 100 °C from aqueous solutions and their transformation in the perovskitelike compound BaSnO₃ was investigated. Single acicular crystals 100–200 μm ...

M. T. Buscaglia, M. Leoni, M. Viviani, V. Buscaglia… in Journal of Materials Research (2003)

Article

The preparation of porous perovskite membranes using BaTiO₃ nanopowders

The aim of this study was to develop a simple and reliable procedure in order to prepare composite membranes through the deposition of thin porous layers of perovskite-like oxides onto ceramic porous supports....

G Battilana, A. Bottino, G. Capannelli, P. Nanni in Journal of Materials Science (2002)

Article

Synthesis, sintering and expansion of Al0.8Mg0.6Ti1.6O5: a low-thermal-expansion material resistant to thermal decomposition

A low-thermal-expansion ceramic with the composition Al0.8Mg0.6Ti1.6O5 that is isostructural to aluminium titanate Al2TiO5, was prepared by solid-state reaction of a mixture of α-Al2O3, MgO and TiO2-rutile. Th...

V. Buscaglia, F. Caracciolo, M. Leoni, P. Nanni, M. Viviani… in Journal of Materials Science (1997)

Article

Decomposition of Al₂TiO₅-MgTi₂O₅ solid solutions: a thermodynamic approach

The decomposition of Al_1−xMg_xTi_1+xO₅ solid solutions with x=0.0, 0.1, 0.2, 0.4, 0.5 and 0.6 was studied in the temperature range 900–1175 °C using a 250 h annealing test. As x increases from 0–0.2 there is a stro...

V. Buscaglia, G. Battilana, M. Leoni, P. Nanni in Journal of Materials Science (1996)

Article

Low-temperature aqueous synthesis (LTAS) of ceramic powders with perovskite structure

M. Leoni, M. Viviani, P. Nanni, V. Buscaglia in Journal of Materials Science Letters (1996)

Article

The effect of MgAl₂O₄ on the formation kinetics of Al₂TiO₅ from Al₂O₃ and TiO₂ fine powders

The formation of Al_2(1−x)Mg_xTi_(1+x)O₅ solid solutions from Al₂O₃-TiO₂-MgAl₂O₄ powder mixtures of ≈1 μm particle size and moderate purity has been studied at 1300°C for different final composition values: x=0 (“pu...

V. Buscaglia, M. Alvazzi Delfrate, M. Leoni, C. Bottino… in Journal of Materials Science (1996)

Article

The transition from internal oxidation to continuous-film formation during oxidation of dilute Ni-Si alloys

The oxidation of Ni-2.05Si and Ni-4.45Si was studied in oxygen over the range of 600°–1000°C for 18 hr. The oxidation kinetics did not follow a parabolic rate law, bur rather a power law of the form (Δw)ⁿ=kt was ...

D. L. Douglass, P. Nanni, C. De Asmundis, C. Bottino in Oxidation of Metals (1987)

Article

The corrosion of nickel in 1 atm of pure SO₂ at 600–1000°C and the mechanism of formation of the two-layered scales

The reaction of pure nickel with 1 atm SO₂ at 600–1000°C follows an irregular type of kinetics, tending to become parabolic at the highest temperature. The reaction rate tends to decrease with an increase of temp...

F. Gesmundo, C. de Asmundis, P. Nanni in Oxidation of Metals (1983)

Article

Oxidation of two-phase Co-54.86 wt.% Cu alloy at 700–1000°C

The oxidation in 1 atm of pure oxygen of a binary two-phase Co-Cu alloy has been studied as a simple example of the oxidation behavior of a multiphase alloy. The two-phase alloy oxidizes according to a parabol...

F. Viani, P. Nanni, F. Gesmundo in Oxidation of Metals (1983)

Article

High-temperature oxidation of copper-manganese alloys

The oxidation behavior of copper-manganese alloys (2–35 wt. % Mn) in pure oxygen at 760 Torr was investigated at 100° intervals between 550 and 850°C. Gravimetric measurements of the oxidation kinetics have be.....

P. Nanni, F. Viani, P. Elliott, F. Gesmundo in Oxidation of Metals (1979)