CRYSTAL GLASS COMPOSITE MANUFACTURING METHOD AND CRYSTAL GLASS COMPOSITE

• 特願2012-060575 (2012.3.16) JP

A manufacturing method of a crystal glass composite having light-emitting characteristics. This manufacturing method involves a melting step and a forming step. In the melting step, a mixture of powdery B2O3 and/or SiO2, SrO and Al2O3, and powdery Eu2O3 is stored in a melting furnace and the mixture is melted so as to become a mixed phase of solid and liquid phases. In the forming step, by cooling to or below the liquid phase glass transition point after the melting step, a crystal glass composite is formed comprising SrAl2O4 crystals to which Eu has been added, dispersed in a glass to which Eu has been added. Furthermore, in the melting step, the oxygen partial pressure in the atmosphere of the melting furnace is controlled in order to control both the valence of the Eu added to the glass, and the valence of Eu added to the SrAl2O4 crystals.

• NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY

• NAKANISHI TAKAYUKI,
• HASEGAWA YASUCHIKA,
• WATANABE KAZUNE,
• FUSHIMI KOJI

• C09K  11/08      無機発光性物質を含有するもの
• C03B   5/16      溶融プロセスの特徴；ガラス溶融窯に特に適する補助手段
• C03C  10/02      無シリカおよび無けい酸塩結晶相，例．スピネル，チタン酸バリウム
• C09K  11/00      発光性物質，例．電気発光性物質；化学発光性物質
• C09K  11/64      アルミニウムを含むもの