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    Pressureless sintering process to produce high thermal conductivity ceramic body of aluminum nitride
    9.
    发明授权
    Pressureless sintering process to produce high thermal conductivity ceramic body of aluminum nitride 失效
    无压烧结工艺生产高导热陶瓷体的氮化铝

    公开(公告)号：US4578232A

    公开(公告)日：1986-03-25

    申请号：US728133

    申请日：1985-04-29

    申请人： Irvin C. Huseby ,  Carl F. Bobik

    发明人： Irvin C. Huseby ,  Carl F. Bobik

    IPC分类号： C04B35/581 ,  C04B35/58 ,  F27D7/06

    CPC分类号： C04B35/581

    摘要： A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon LT1DM but not including lines LM and DM of FIG. 4, a porosity of less than about 10% by volume, and a thermal conductivity higher than 1.00 W/cm.multidot.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, yttrium oxide, and free carbon, shaping said mixture into a compact, said mixture and said compact having a composition wherein the equivalent % of Yttrium and aluminum ranges from point T1 up to point M of FIG. 4, said compact having an equivalent % composition of Y, Al, O and N outside the composition defined and encompassed by polygon LT1DM of FIG. 4, heating said compact to a temperature at which its pores remain open reacting said free carbon with oxygen contained in said aluminum nitride producing a deoxidized compact, said deoxidized compact having a composition wherein the equivalent % of A1, Y, O and N is defined and encompassed by polygon LT1DM but not including lines LM and DM of FIG. 4, and sintering said deoxidized compact at a temperature of at least about 1855.degree. C. producing said ceramic body.

    摘要翻译： 具有由多边形LT1DM定义并包含但不包括图5的线LM和DM的组成的氮化铝陶瓷体的方法。 4，孔隙率小于约10体积％，并且在25℃下的导热率高于1.00W / cm×K，其包括形成由包含氧的氮化铝粉末，氧化钇和游离碳组成的混合物，将所述 所述混合物和所述压块具有其中钇和铝的当量％的范围从图1中的点T1直到点M的组成。 如图4所示，所述紧凑件具有在由图1的多边形LT1DM限定和包围的组合之外的Y，Al，O和N的等效组成。 4，将所述压块加热至其孔保持开放的温度，使所述游离碳与所述氮化铝中所含的氧气反应产生脱氧的压块，所述脱氧的压块具有其中定义了Al，Y，O和N的当量％ 并且由多边形LT1DM包围但不包括图5的线LM和DM。 4，并在至少约1855℃的温度下烧结所述脱氧制品，产生所述陶瓷体。

    High thermal conductivity ceramic body
    10.
    发明授权
    High thermal conductivity ceramic body 失效
    高导热陶瓷体

    公开(公告)号：US4818455A

    公开(公告)日：1989-04-04

    申请号：US868490

    申请日：1986-05-30

    申请人： Irvin C. Huseby ,  Carl F. Bobik

    发明人： Irvin C. Huseby ,  Carl F. Bobik

    IPC分类号： C04B35/581 ,  C04B35/58 ,  F27D7/06

    CPC分类号： C04B35/581

    摘要： A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon ABCFGH of FIG. 2, a porosity of less than about 10% by volume, and a thermal conductivity greater than 0.70 W/cm.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, gadolinium oxide, and free carbon, shaping said mixture into a compact, said mixture and compact having a composition wherein the equivalent % of gadolinium and aluminum ranges from point A to point F of FIG. 2, said mixture and said compact having an equivalent % composition of Gd, Al, O and N outside the composition defined and encompassed by polygon ABCFGH of FIG. 2, heating said compact to a temperature at which its pores remain open reacting said free carbon with oxygen contained in said aluminum nitride producing a deoxidized compact, said deoxidized compact having a composition wherein the equivalent % of Al, Gd, O and N is defined and encompassed by polygon ABCFGH of FIG. 2, and sintering said deoxidized compact producing said ceramic body.

    摘要翻译： 具有由图1的多边形ABCFGH限定和包围的组成的氮化铝陶瓷体的制造方法。 2，孔隙率小于约10体积％，并且在25℃下的导热率大于0.70W / cm·K，其包括形成由包含氧的氮化铝粉末，氧化钆和游离碳组成的混合物， 将所述混合物成形为具有组成的致密的所述混合物和压块，其中钆和铝的当量％在图1的点A至点F的范围内。 如图2所示，所述混合物和所述压块具有由图2的多边形ABCFGH限定和包围的组合物外的Gd，Al，O和N的组成的当量％。 2，将所述压块加热到其孔保持开放的温度，使所述游离碳与所述氮化铝中包含的氧反应产生脱氧的压块，所述脱氧的压块具有其中定义Al，Gd，O和N的当量％的组成 并由图2的多边形ABCFGH包围。 2，烧结所述生产所述陶瓷体的脱氧化压实体。