发明名称 |
TRANSPARENT SPINEL CERAMICS AND METHOD FOR THE PRODUCTION THEREOF |
摘要 |
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. |
申请公布号 |
US2015344372(A1) |
申请公布日期 |
2015.12.03 |
申请号 |
US201414287776 |
申请日期 |
2014.05.27 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
HUTZLER Thomas;KRELL Andreas |
分类号 |
C04B35/443 |
主分类号 |
C04B35/443 |
代理机构 |
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代理人 |
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主权项 |
1. Spinel ceramics which are transparent in wavelength ranges of infrared light, 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. |
地址 |
Muenchen DE |