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A platform for research: civil engineering, architecture and urbanism
TRANSPARENT POLYCRYSTALLINE ALUMINIUM OXIDE
The present invention relates to highly dense translucent and transparent aluminium oxide components for applications, e.g. in the lighting industry, where a fine crystal size has to be obtained and stabilized for use at temperatures of 800° C. or more. Disclosed are high-strength polycrystalline alumina products which include 0.001-0.5 weight-% ZrO2 stabilizing a fine crystal size <2 mum or, preferably, <1 mum if used at temperatures of 800° C. or more. The microstructure exhibits an extremely high relative density enabling a high real in-line transmission >30% measured over an angular aperture of at most 0.5° at a sample thickness of 0.8 mm and with a monochromatic wavelength of light lambda, preferably, of 645 nm.
TRANSPARENT POLYCRYSTALLINE ALUMINIUM OXIDE
The present invention relates to highly dense translucent and transparent aluminium oxide components for applications, e.g. in the lighting industry, where a fine crystal size has to be obtained and stabilized for use at temperatures of 800° C. or more. Disclosed are high-strength polycrystalline alumina products which include 0.001-0.5 weight-% ZrO2 stabilizing a fine crystal size <2 mum or, preferably, <1 mum if used at temperatures of 800° C. or more. The microstructure exhibits an extremely high relative density enabling a high real in-line transmission >30% measured over an angular aperture of at most 0.5° at a sample thickness of 0.8 mm and with a monochromatic wavelength of light lambda, preferably, of 645 nm.
TRANSPARENT POLYCRYSTALLINE ALUMINIUM OXIDE
TRANSPARENTES POLYKRISTALLINES ALUMINIUMOXID
OXYDE D'ALUMINIUM POLYCRISTALLIN TRANSPARENT
VAN BRUGGEN MICHEL P B (author) / APETZ ROLF T A (author) / KOP THEO A (author) / KRELL ANDREAS (author) / HUTZLER THOMAS (author)
2015-09-16
Patent
Electronic Resource
English
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