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Publikováno v:
Journal of the European Ceramic Society. 25:1733-1742
The high-temperature oxidation of Si 3 N 4 –TiN particulate composites with different amounts of the glass forming sinter additives Al 2 O 3 and Y 2 O 3 has been studied in order to reveal the oxidation mechanism with its different reaction steps a
Publikováno v:
Journal of the European Ceramic Society. 25:1743-1748
The oxidation in air of Si 3 N 4 -based ceramics containing 35 vol.% of TiN secondary phase and different amounts of sintering additives has been studied at different temperatures up to 1400 °C in dry or humid environment. The oxidation starts by cr
Publikováno v:
Journal of the American Ceramic Society. 85:385-392
High-temperature oxidation behavior, microstructural evolution, and oxidation kinetics of additive-free α-, β-, and mixed silicon nitride ceramics is investigated. The oxidation rate of the ceramics depends on the allotropic ratio; best oxidation r
Publikováno v:
Journal of Solid State Chemistry. 173:172-188
(Cu,Mg) alloys are internally oxidized at different oxygen chemical potential at 900°C. Oxidation scale microstructure is studied by SEM and TEM. MgO forms as large magnesia agglomerates without any special orientation relationship and isolated cubo
Publikováno v:
Acta Materialia. 50:4191-4204
Interfacial chemistry and equilibrium morphology of SiO 2 glass precipitates in a solid copper matrix are studied as a function of the oxygen chemical potential. Spherical SiO 2 –glass precipitates are formed within copper by internal oxidation of
Autor:
M. Backhaus-Ricoult
Publikováno v:
Philosophical Magazine A. 81:1759-1787
Non-reactive ternary metal–oxide interfaces are thermodynamically stable over extended ranges of oxygen activities and temperatures. At each condition within this range, the interface adopts a different equilibrium structure and chemistry. A contin
Autor:
M. Backhaus-Ricoult
Publikováno v:
Acta Materialia. 49:1747-1758
The equilibrium shape of liquid metal inclusions in oxides is used to study anisotropy and oxygen partial pressure dependency of the metal–oxide specific interfacial free energy. Liquid copper inclusions are formed within single crystalline magnesi
Autor:
M. Backhaus-Ricoult
Publikováno v:
Defect and Diffusion Forum. :1025-1032