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公开(公告)号：US07456122B2
公开(公告)日：2008-11-25
申请号：US11240069
申请日：2005-09-30
IPC分类号： C04B35/115 , F41H5/26
CPC分类号： C04B35/115 , C04B35/119 , C04B35/6455 , C04B2235/3206 , C04B2235/3225 , C04B2235/3244 , C04B2235/5445 , C04B2235/602 , C04B2235/656 , C04B2235/658 , C04B2235/6582 , C04B2235/6588 , C04B2235/661 , C04B2235/664 , C04B2235/77 , C04B2235/785 , C04B2235/94 , C04B2235/96 , C04B2235/9623 , F41H5/0414
摘要： Polycrystalline alumina and methods for manufacturing polycrystalline alumina exhibiting improved transmission in the infrared region. In one embodiment, the percent real in-line transmittance is within about 2% of sapphire at selected wavelengths. In one or more embodiments, polycrystalline articles exhibit improved mechanical properties such as thermal shock resistance and hardness, which may find use in armor applications.
摘要翻译： 多晶氧化铝和制造多晶氧化铝的方法在红外区域表现出改善的透射率。 在一个实施例中，实际在线透射率的百分比在所选波长的蓝宝石的约2％内。 在一个或多个实施方案中，多晶制品表现出改善的机械性能，例如耐热冲击性和硬度，其可用于护甲应用。
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公开(公告)号：US08501081B2
公开(公告)日：2013-08-06
申请号：US12257510
申请日：2008-10-24
IPC分类号： C04B33/32 , C04B35/115
CPC分类号： C04B35/115 , C04B35/119 , C04B35/6455 , C04B2235/3206 , C04B2235/3225 , C04B2235/3244 , C04B2235/5445 , C04B2235/602 , C04B2235/656 , C04B2235/658 , C04B2235/6582 , C04B2235/6588 , C04B2235/661 , C04B2235/664 , C04B2235/77 , C04B2235/785 , C04B2235/94 , C04B2235/96 , C04B2235/9623 , F41H5/0414
摘要： Polycrystalline alumina and methods for manufacturing polycrystalline alumina exhibiting improved transmission in the infrared region. In one embodiment, polycrystalline alumina articles are formed by providing a powder of substantially alpha phase alumina having a grain size of up to about 1 μm, dispersing the powder in a liquid to form a slurry comprising powdered solids and liquid, removing excess of the liquid from the slurry to form a body, heating the body to provide a densified body, hot isostatically pressing the densified body under conditions to provide an article having a density of at least about 99.9% of theoretical density, and optionally annealing the article, wherein one or more of the annealing or heating are performed in an inert, dry gas.
摘要翻译： 多晶氧化铝和制造多晶氧化铝的方法在红外区域表现出改善的透射率。 在一个实施方案中，多晶氧化铝制品通过提供具有至多约1μm的粒度的基本上α相氧化铝的粉末形成，将粉末分散在液体中以形成包含粉末状固体和液体的浆料，除去过量的液体 从浆料形成体，加热身体以提供致密体，在条件下热等静压压制体，以提供具有理论密度的至少约99.9％的密度的物品，并且可选地退火制品，其中一个 或更多的退火或加热在惰性干燥气体中进行。
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公开(公告)号：US20100025896A1
公开(公告)日：2010-02-04
申请号：US12257510
申请日：2008-10-24
IPC分类号： B28B3/00
CPC分类号： C04B35/115 , C04B35/119 , C04B35/6455 , C04B2235/3206 , C04B2235/3225 , C04B2235/3244 , C04B2235/5445 , C04B2235/602 , C04B2235/656 , C04B2235/658 , C04B2235/6582 , C04B2235/6588 , C04B2235/661 , C04B2235/664 , C04B2235/77 , C04B2235/785 , C04B2235/94 , C04B2235/96 , C04B2235/9623 , F41H5/0414
摘要： Polycrystalline alumina and methods for manufacturing polycrystalline alumina exhibiting improved transmission in the infrared region. In one embodiment, polycrystalline alumina articles are formed by providing a powder of substantially alpha phase alumina having a grain size of up to about 1 μm, dispersing the powder in a liquid to form a slurry comprising powdered solids and liquid, removing excess of the liquid from the slurry to form a body, heating the body to provide a densified body, hot isostatically pressing the densified body under conditions to provide an article having a density of at least about 99.9% of theoretical density, and optionally annealing the article, wherein one or more of the annealing or heating are performed in an inert, dry gas.
摘要翻译： 多晶氧化铝和制造多晶氧化铝的方法在红外区域表现出改善的透射率。 在一个实施方案中，多晶氧化铝制品通过提供具有至多约1μm的粒度的基本上α相氧化铝的粉末形成，将粉末分散在液体中以形成包含粉末状固体和液体的浆料，除去过量的液体 从浆料形成体，加热身体以提供致密体，在条件下热等静压压制体，以提供具有理论密度的至少约99.9％的密度的物品，并且可选地退火制品，其中一个 或更多的退火或加热在惰性干燥气体中进行。
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