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1. 发明授权

US5376606A Light-transmissive polycrystalline alumina ceramics 失效
标题翻译：透光多晶氧化铝陶瓷
公开(公告)号：US5376606A
公开(公告)日：1994-12-27
申请号：US176089
申请日：1993-12-30
申请人： Yoon H. Kim , Jae K. Park , Dong K. Lim , Hee B. Kang
发明人： Yoon H. Kim , Jae K. Park , Dong K. Lim , Hee B. Kang
IPC分类号： C04B35/115 , C04B35/10
CPC分类号： C04B35/115
摘要： A light-transmissive alumina ceramic composition and a method for preparing the same are disclosed. The light-transmissive polycrystalline alumina ceramics composition comprises of 100 w/o of aluminum oxide having a purity of not less than 99.99%, approximately 0.03 to approximately 0.1 w/o of magnesium compound and approximately 0.002 to approximately 0.07 w/o of zirconium compound. The method is comprised of the steps of: molding mixture powder consisting of 100 w/o of aluminum oxide powder having a purity of not less than 99.99% added with from approximately 0.03 to approximately 0.1 w/o of magnesium oxide powder and from approximately 0.002 to approximately 0.07 w/o of zirconium oxide powder to obtain a molded substance; calcining said molded substance under the atmosphere to give a calcined substance having a strength suitable to processing; grinding the surface of said calcined substance smoothly; and sintering the resulting substance in a hydrogen atmosphere or a vacuum. The light-transmissive polycrystalline ceramics composition is preventive of the reflection and scattering of light. With the method for producing light-transmissive polycrystalline ceramics, the workability and the production yield are improved.
摘要翻译：公开了透光氧化铝陶瓷组合物及其制备方法。透光性多晶氧化铝陶瓷组合物包含100w / o纯度为99.99％，约0.03〜0.1w / o的镁化合物和约0.002〜0.07w / o的锆化合物的氧化铝。该方法包括以下步骤：将由100w / o纯度为99.99％的氧化铝粉末加入约0.03至约0.1w / o氧化镁粉末的混合物粉末和约0.002 至约0.07w / o的氧化锆粉末以获得模制物质; 在气氛下煅烧所述成型物质，得到具有适合加工强度的煅烧物质; 平滑研磨所述煅烧物质的表面; 并在氢气氛或真空中烧结所得物质。透光多晶陶瓷组合物防止光的反射和散射。通过制造透光性多晶陶瓷的方法，提高了加工性和生产率。

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