A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
NEAR-INFRARED ABSORBING ALUMINA MATERIAL AND NEAR-INFRARED ABSORBING ALUMINA CERAMICS
PROBLEM TO BE SOLVED: To provide a near-infrared absorbing alumina material and near-infrared absorbing alumina ceramics having superior weatherability and heat resistance by providing an insulating alumina material with a near-infrared absorbing property.SOLUTION: A material suitable for use as a near-infrared absorbing alumina material contains no less than 99.5 mass% AlOand 100 ppm to 3000 ppm, inclusive, of Fe in FeOequivalent and, when A1 is defined as a spectral absorption index at a wavelength of 600 nm and A2 is defined as a spectral absorption index at a wavelength of 1900 nm, A1 is 20% or less and A2 is 30% or more. Further, the material is suitably used as near-infrared absorbing alumina ceramics by treating the material to be ceramics with porosity of 0.5% or less.
【課題】絶縁性のアルミナ材料に近赤外線吸収特性を付与することによる、耐候性や耐熱性に優れた近赤外線吸収アルミナ材料および近赤外線吸収アルミナ磁器の提供。【解決手段】Ａｌ２Ｏ３を９９．５質量％以上、ＦｅをＦｅ２Ｏ３換算で１００ｐｐｍ以上３０００ｐｐｍ以下含有するとともに、波長６００ｎｍの分光吸収率をＡ１、波長１９００ｎｍの分光吸収率をＡ２としたとき、前記Ａ１が２０％以下、かつ前記Ａ２が３０％以上であることにより、近赤外線吸収アルミナ材料として好適に用いることができる。また、さらに気孔率が０．５％以下の磁器とすることで、近赤外線吸収アルミナ磁器として好適に用いることができる。【選択図】図１
NEAR-INFRARED ABSORBING ALUMINA MATERIAL AND NEAR-INFRARED ABSORBING ALUMINA CERAMICS
PROBLEM TO BE SOLVED: To provide a near-infrared absorbing alumina material and near-infrared absorbing alumina ceramics having superior weatherability and heat resistance by providing an insulating alumina material with a near-infrared absorbing property.SOLUTION: A material suitable for use as a near-infrared absorbing alumina material contains no less than 99.5 mass% AlOand 100 ppm to 3000 ppm, inclusive, of Fe in FeOequivalent and, when A1 is defined as a spectral absorption index at a wavelength of 600 nm and A2 is defined as a spectral absorption index at a wavelength of 1900 nm, A1 is 20% or less and A2 is 30% or more. Further, the material is suitably used as near-infrared absorbing alumina ceramics by treating the material to be ceramics with porosity of 0.5% or less.
【課題】絶縁性のアルミナ材料に近赤外線吸収特性を付与することによる、耐候性や耐熱性に優れた近赤外線吸収アルミナ材料および近赤外線吸収アルミナ磁器の提供。【解決手段】Ａｌ２Ｏ３を９９．５質量％以上、ＦｅをＦｅ２Ｏ３換算で１００ｐｐｍ以上３０００ｐｐｍ以下含有するとともに、波長６００ｎｍの分光吸収率をＡ１、波長１９００ｎｍの分光吸収率をＡ２としたとき、前記Ａ１が２０％以下、かつ前記Ａ２が３０％以上であることにより、近赤外線吸収アルミナ材料として好適に用いることができる。また、さらに気孔率が０．５％以下の磁器とすることで、近赤外線吸収アルミナ磁器として好適に用いることができる。【選択図】図１
NEAR-INFRARED ABSORBING ALUMINA MATERIAL AND NEAR-INFRARED ABSORBING ALUMINA CERAMICS
近赤外線吸収アルミナ材料および近赤外線吸収アルミナ磁器
FURUSE TATSUJI (author) / NAGATA KENICHI (author)
2015-07-09
Patent
Electronic Resource
Japanese
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