Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Transparent spinel ceramics and method for the production thereof
Transparent spinel ceramics, as they can be used, for example, as protective ceramics, and to a method for the production thereof. Transparent spinel ceramics which preferably contain no visible defects and which have an in-line transmission of more than 82% in wavelength ranges of infrared light, measured between 1000 nm and 2500 nm, at sample thicknesses≧3 mm. Spinel ceramics transparent in wavelength ranges of infrared light which are composed of sintered magnesium aluminum spinel having an average structural grain size of ≰10 μm and having maximally 0.5 mass % overall of homogeneously distributed additives of calcium and/or strontium and/or barium which are present in a concentration, expressed respectively as an oxide, of 0.005 to <0.2 mass % CaO and/or 0.005 to <0.5 mass % SrO and/or 0.005 to <0.5 mass % BaO.
Transparent spinel ceramics and method for the production thereof
Transparent spinel ceramics, as they can be used, for example, as protective ceramics, and to a method for the production thereof. Transparent spinel ceramics which preferably contain no visible defects and which have an in-line transmission of more than 82% in wavelength ranges of infrared light, measured between 1000 nm and 2500 nm, at sample thicknesses≧3 mm. Spinel ceramics transparent in wavelength ranges of infrared light which are composed of sintered magnesium aluminum spinel having an average structural grain size of ≰10 μm and having maximally 0.5 mass % overall of homogeneously distributed additives of calcium and/or strontium and/or barium which are present in a concentration, expressed respectively as an oxide, of 0.005 to <0.2 mass % CaO and/or 0.005 to <0.5 mass % SrO and/or 0.005 to <0.5 mass % BaO.
Transparent spinel ceramics and method for the production thereof
HUTZLER THOMAS (Autor:in) / KRELL ANDREAS (Autor:in)
12.04.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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