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公开(公告)号：US5049367A
公开(公告)日：1991-09-17
申请号：US417104
申请日：1989-10-04
IPC分类号： C01B21/072 , H01L21/48
CPC分类号： C01B21/0726 , H01L21/4807 , C01P2006/10
摘要： An aluminum nitride powder obtained by firing and reacting a mixture of alumina and carbon in a nitrogen-containing atmosphere is disclosed, the aluminum nitride powder having an oxygen content of not more than 2.0% by weight, an iron content of not more than 20 ppm, a silicon content of not more than 100 ppm, and a titanium content of not more than 20 ppm and having has a tapped density of at least 1.0 g/cm.sup.3. An aluminum nitride powder containing from 0.01% to 10% by weight of a sintering aid is also disclosed, the aluminum nitride powder having an oleophilic surface and having a tapped density of at least 1.0 g/cm.sup.3. The aluminum nitride powder of the present invention has excellent moldability, has a high tapped density, is less in formation of coagulated particles, and has a sharp particle size distribution.
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公开(公告)号：US4986967A
公开(公告)日：1991-01-22
申请号：US163665
申请日：1988-03-03
IPC分类号： C04B35/64 , B01J8/02 , C01B21/06 , C01B21/068 , C01B21/072 , C01B21/082 , F27B9/22 , F27B17/00
CPC分类号： C01B21/0821 , B01J8/0207 , C01B21/06 , C01B21/0685 , C01B21/0726
摘要： In a furnace which allows a feed powder or granules in a stack of trays on a base plate to be reacted with a reactive gas, the improvement wherein each of the trays has a cutout or an opening providing a passage for the reactive gas or the produced gas both at the top of one side wall and in the bottom wall to the opposite side of the tray, the base plate having an opening through which the reactive gas is introduced or the produced gas is discharged.
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公开(公告)号：US5076981A
公开(公告)日：1991-12-31
申请号：US646476
申请日：1991-01-25
IPC分类号： A61B17/00 , C04B35/581
CPC分类号： C04B35/581 , A61B2017/00004
摘要： A process for producing an aluminum nitride sintered body is disclosed, comprising mixing an aluminum nitride powder with (a) a calcium compound and (b) a copper compound, and, if desired, (c) a yttrium compound as sintering aids; molding the mixture; and sintering the molded article in a non-oxidative atmosphere. The resulting sintered body has a high density (3.10 g/cm.sup.3 or higher) and a high thermal conductivity (110 W/mK or higher) even by sintering at a low temperature (1500.degree. to 2000.degree. C.).
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4.发明授权Glazing layer-forming composition for hot-coating of furnace refractories and method of forming glazing layer 失效用于耐火材料的热镀层的上光层形成组合物和形成上光层的方法
公开(公告)号：US6096432A
公开(公告)日：2000-08-01
申请号：US737637
申请日：1996-11-15
CPC分类号： C04B41/009 , C04B41/5022 , C04B41/5089 , C04B41/85 , C04B41/86 , F27D1/1636 , F27D1/1678 , C04B2111/00551 , F27D1/1684
摘要： Growth of scale on the wall surfaces of high-temperature furnaces is prevented, or the damaged portions are repaired. In addition, the inner wall surfaces of furnaces such as coke furnaces and carbon-firing furnaces, and attachments to furnaces (furnace lids and gas pipes) are protected from deposition of carbon.Glazing layers are formed by application to the refractory surfaces of furnaces of a glazing agent which comprises as a glaze, on an oxide basis, 0-10% by weight of Li.sub.2 O, 0-10% by weight of B.sub.2 O.sub.3, 10-40% by weight of R.sub.2 O (R represents Na or K) and SiO.sub.2 as the balance, wherein the glaze has a melting point of 900.degree. C. or below.
摘要翻译： PCT No.PCT / JP95 / 00931 Sec。 371日期1996年11月15日 102（e）日期1996年11月15日PCT提交1995年5月16日PCT公布。 公开号WO95 / 31418 日期1995年11月23日防止高温炉壁表面生长，或修复损坏部分。 另外，保护炉子的内壁表面如焦炉和碳燃烧炉，以及熔炉附件（炉盖和气体管道）都不会被碳沉积。 玻璃层通过应用于玻璃制品的炉子的耐火表面而形成，其包括以氧化物为基础的釉料，0-10重量％的Li 2 O，0-10重量％的B 2 O 3，10-40重量％的B 2 O 3，10-40重量％ R 2 O的重量（R表示Na或K）和SiO 2作为余量，其中釉料的熔点为900℃或更低。
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