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13 条记录 (耗时 0.027 秒)

    Aluminum nitride flakes and spheres
    1.
    发明授权
    Aluminum nitride flakes and spheres 失效
    氮化铝薄片和球体

    公开(公告)号：US4908197A

    公开(公告)日：1990-03-13

    申请号：US334612

    申请日：1989-04-07

    申请人： John D. Bolt ,  Walter Mahler ,  Frederick N. Tebbe ,  Robert J. Young, Jr.

    发明人： John D. Bolt ,  Walter Mahler ,  Frederick N. Tebbe ,  Robert J. Young, Jr.

    IPC分类号： C01B21/072 ,  C04B35/581 ,  C07F5/06 ,  H01B3/00

    CPC分类号： B82Y30/00 ,  C01B21/072 ,  C04B35/581 ,  C01P2004/20 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/60

    摘要： Methods are described for preparing aluminum nitride of controllable morphology for ceramic and heat conduction applications. The methods comprise forming spherical particles or flakes of an intermediate, RA1NH, followed by heating the spheres or flakes of RA1NH at elevated temperatures to produce high purity aluminum nitride of corresponding morphology. Spheres of RA1NH are formed by (i) freezing a suspension of RA1NH in a liquid medium and thawing, by (ii) aging the suspension, or by (iii) dissolving RA1NH in a liquid medium and precipitating it. Flakes are formed by freezing a suspension of RAINH in a liquid medium and removing frozen medium from the frozen suspension.

    摘要翻译： 描述了用于制备用于陶瓷和热传导应用的可控形态的氮化铝的方法。 所述方法包括形成中间体RA1NH的球形颗粒或薄片，然后在升高的温度下加热RA1NH的球体或薄片以产生相应形态的高纯氮化铝。 RAINH的球体通过以下步骤形成：（i）通过（ii）老化悬浮液或（iii）将RA1NH溶解在液体介质中并使其沉淀，将液体介质中的RA1NH的悬浮液冷冻并融化形成。 通过将液体介质中的RAINH的悬浮液冷冻并从冷冻悬浮液中除去冷冻介质形成片。

    Aluminum nitride flakes and spheres
    2.
    发明授权
    Aluminum nitride flakes and spheres 失效
    氮化铝薄片和球体

    公开(公告)号：US5164263A

    公开(公告)日：1992-11-17

    申请号：US454667

    申请日：1989-12-21

    申请人： John D. Bolt ,  Walter Mahler ,  Frederick N. Tebbe ,  Robert J. Young, Jr.

    发明人： John D. Bolt ,  Walter Mahler ,  Frederick N. Tebbe ,  Robert J. Young, Jr.

    IPC分类号： C01B21/072 ,  C04B35/581

    CPC分类号： B82Y30/00 ,  C01B21/072 ,  C04B35/581 ,  C01P2004/20 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/60 ,  Y10T428/256 ,  Y10T428/2982

    摘要： Methods are described for preparing aluminum nitride of controllable morphology for ceramic and heat conduction applications. The methods comprise forming spherical particles or flakes of an intermediate, RAlNH, followed by heating the spheres or flakes of RAlNH at elevated temperatures to produce high purity aluminum nitride of corresponding morphology. Spheres of RAlNH are formed by (i) freezing a suspension of RAlNH in a liquid medium and thawing, by (ii) aging the suspension, or by (iii) dissolving RAlNH in a liquid medium and precipitating it. Flakes are formed by freezing a suspension of RAlNH in a liquid medium and removing frozen medium from the frozen suspension.

    摘要翻译： 描述了用于制备用于陶瓷和热传导应用的可控形态的氮化铝的方法。 该方法包括形成中间体RANNH的球形颗粒或薄片，然后在升高的温度下加热RANNH的球体或薄片以产生相应形态的高纯氮化铝。 RAINH的球体通过以下步骤形成：（i）通过（ii）使悬浮液老化或（iii）将RANNH溶解在液体介质中并使其沉淀，将RANNH的悬浮液冷冻在液体介质中并解冻。 通过将RANNH的悬浮液冷冻在液体介质中并从冷冻悬浮液中除去冷冻介质形成片。

    High strength aluminum nitride fibers and composites and processes for the preparation thereof
    4.
    发明授权
    High strength aluminum nitride fibers and composites and processes for the preparation thereof 失效
    高强度氮化铝纤维及其制备方法

    公开(公告)号：US5508239A

    公开(公告)日：1996-04-16

    申请号：US578408

    申请日：1990-09-07

    申请人： John D. Bolt ,  Frederick N. Tebbe

    发明人： John D. Bolt ,  Frederick N. Tebbe

    IPC分类号： C04B35/622 ,  C04B35/80 ,  C04B35/581 ,  B05D5/12

    CPC分类号： C04B35/62272 ,  C04B35/80

    摘要： Shaped articles of polycrystalline aluminum nitride are disclosed having a tensile strength of at least about 100 Kpsi. The shaped articles are preferably fibers. Composites of polycrystalline AlN fibers in a matrix of organic or inorganic polymer, metal, glass or ceramic are also disclosed herein. The process for the preparation of polycrystalline aluminum nitride fibers is covered.

    摘要翻译： 公开了具有至少约100Kpsi的拉伸强度的多晶氮化铝的成型制品。 成形制品优选是纤维。 本文还公开了有机或无机聚合物，金属，玻璃或陶瓷基体中的多晶AlN纤维的复合材料。 覆盖了制备多晶氮化铝纤维的方法。

    Process for making 90 K superconductors from acetate precursor solutions
    7.
    发明授权
    Process for making 90 K superconductors from acetate precursor solutions 失效
    从乙酸酯前体溶液制备90 K超导体的工艺

    公开(公告)号：US4866031A

    公开(公告)日：1989-09-12

    申请号：US60079

    申请日：1987-06-09

    申请人： John D. Bolt ,  Munirpallam A. Subramanian

    发明人： John D. Bolt ,  Munirpallam A. Subramanian

    IPC分类号： C04B35/00 ,  C01G1/00 ,  C01G3/00 ,  C04B35/45 ,  C04B35/636 ,  H01B12/00 ,  H01B12/06 ,  H01B13/00 ,  H01L39/24

    CPC分类号： C01G3/006 ,  C04B35/4508 ,  C04B35/6365 ,  H01L39/2419 ,  C01P2002/72 ,  Y10S264/25 ,  Y10S264/36

    摘要： There is disclosed an improved process for preparing a superconducting composition having the formula MBa.sub.2 Cu.sub.3 O.sub.x wherein M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; x is from about 6.5 to about 7.0; said composition having a superconducting transition temperature of about 90 K; said process consisting essentially of preparing a precursor solution, drying the solution of obtain a solid material, and heating and cooling the solid material under specified conditions to obtain the desired product. In another embodiment, a shaped superconducting MBa.sub.2 Cu.sub.3 O.sub.x article is prepared by impregnating an article of cellulose material with the precursor solution, drying the impregnated article, and heating and cooling the impregnated article under prescribed conditions to obtain the desired product.

    摘要翻译： 公开了一种制备具有式MBa2Cu3Ox的超导组合物的改进方法，其中M选自Y，Nd，Sm，Eu，Gd，Dy，Ho，Er，Tm，Yb和Lu; x为约6.5至约7.0; 所述组合物具有约90K的超导转变温度; 所述方法主要包括制备前体溶液，干燥获得固体材料的溶液，以及在特定条件下加热和冷却固体材料以获得所需产物。 在另一个实施方案中，通过用前体溶液浸渍纤维素材料制品，干燥浸渍制品，并在规定条件下加热和冷却浸渍制品以制备所需产品，制备成形超导MBa2Cu3Ox制品。

    Process for making 90.degree. K. superconductors by impregnating cellulosic article with precursor solution
    9.
    发明授权
    Process for making 90.degree. K. superconductors by impregnating cellulosic article with precursor solution 失效
    通过用前体溶液浸渍纤维素制品制备90°K超导体的方法

    公开(公告)号：US4983573A

    公开(公告)日：1991-01-08

    申请号：US323366

    申请日：1989-03-13

    申请人： John D. Bolt ,  Munirpallam A. Subramanian

    发明人： John D. Bolt ,  Munirpallam A. Subramanian

    IPC分类号： C01G3/00 ,  C04B35/45 ,  C04B35/636 ,  H01L39/24

    CPC分类号： C04B35/6365 ,  C01G3/006 ,  C04B35/4508 ,  H01L39/2419 ,  C01P2002/72 ,  Y10S505/734 ,  Y10S505/737 ,  Y10S505/739 ,  Y10S505/74

    摘要： There is disclosed an improved process for preparing a superconducting composition having the formula MBa.sub.2 Cu.sub.3 O.sub.x wherein M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tn, Yb and Lu; x is from about 6.5 to about 7.0; said composition having a superconducting transition temperature of about 90.degree. K.; said process consisting essentially of preparing a precursor solution, drying the solution to obtain a solid material, and heating and cooling the solid material under specified conditions to obtain the desired product. In another embodiment, a shaped superconducting MBa.sub.2 Cu.sub.3 O.sub.x article is prepared by impregnating an article of cellulose material with the precursor solution, drying the impregnated article, and heating and cooling the impregnated article under prescribed conditions to obtain the desired product.

    摘要翻译： 公开了一种制备具有式MBa2Cu3Ox的超导组合物的改进方法，其中M选自Y，Nd，Sm，Eu，Gd，Dy，Ho，Er，Tn，Yb和Lu; x为约6.5至约7.0; 所述组合物的超导转变温度为约90°K; 所述方法主要包括制备前体溶液，干燥溶液以获得固体材料，以及在特定条件下加热和冷却固体材料以获得所需产物。 在另一个实施方案中，通过用前体溶液浸渍纤维素材料制品，干燥浸渍制品，并在规定条件下加热和冷却浸渍制品以制备所需产品，制备成形超导MBa2Cu3Ox制品。

    Preparation of mixed boron and aluminum nitrides
    10.
    发明授权
    Preparation of mixed boron and aluminum nitrides 失效
    混合硼和氮化铝的制备

    公开(公告)号：US4764489A

    公开(公告)日：1988-08-16

    申请号：US131380

    申请日：1987-12-10

    申请人： John D. Bolt

    发明人： John D. Bolt

    IPC分类号： C01B21/064 ,  C01B21/072 ,  C04B35/581 ,  C04B35/583 ,  C04B35/58

    CPC分类号： C01B21/064 ,  C01B21/072 ,  C04B35/581 ,  C04B35/583

    摘要： Method for making a ceramic mixture of boron and aluminum nitrides in the ratio of about 0.2 to 20 g atoms of aluminum per g atom of boron, and method for making shaped articles of the ceramic and of the intermediate from which the ceramic is prepared, comprising the steps (i) reacting a boron nitrogen compound with an organoaluminum compound in a suitable solvent to form a shapeable intermediate, and (ii) heating the intermediate at temperatures and under conditions to effect formation of the mixed nitrides.

    摘要翻译： 制备硼原子和氮化铝的陶瓷混合物的方法，其比例为每克原子硼约0.2至20克原子铝，以及制备陶瓷的成型制品和制备陶瓷的中间体的方法，包括 步骤（i）使硼氮化合物与有机铝化合物在合适的溶剂中反应以形成可成形的中间体，和（ii）在温度和条件下加热中间体以形成混合的氮化物。