Method for production of sintered article of silicon nitride
    1.
    发明授权
    Method for production of sintered article of silicon nitride 失效
    氮化硅烧结体的制造方法

    公开(公告)号:US4693857A

    公开(公告)日:1987-09-15

    申请号:US716212

    申请日:1985-03-26

    CPC分类号: C04B35/584 C04B35/597

    摘要: As the aluminum nitride component of a sintering aid for powdered silicon nitride, either a spinel type compound having oxygen dissolved in aluminum nitride to form a solid solution or a poly-type aluminum nitride is used. Since the compound is highly stable in water, it can be effectively used in the form of an aqueous slurry mixture. As the sintering aid, this compound is used as effectively as aluminum nitride.

    摘要翻译: 作为用于粉末状氮化硅的烧结助剂的氮化铝组分,使用具有溶解在氮化铝中的氧以形成固溶体的尖晶石型化合物或多型氮化铝。 由于该化合物在水中高度稳定,因此可以以含水浆料混合物的形式有效地使用。 作为烧结助剂,该化合物与氮化铝一样有效地使用。

    Process for producing sintered silicon nitride-base body
    4.
    发明授权
    Process for producing sintered silicon nitride-base body 失效
    烧结氮化硅基体的制造方法

    公开(公告)号:US4511525A

    公开(公告)日:1985-04-16

    申请号:US443678

    申请日:1982-11-22

    CPC分类号: C04B35/597 C04B35/584

    摘要: Disclosed is a process for producing a sintered silicon nitride-base body, which comprises; mixing powder (A) of heat-treated or not heat-treated silicon nitride powder and powder (B) of powder obtained by heat-treating a powdery mixture of silicon nitride powder and a sintering additive in a non-oxidizing atmosphere and then grinding the resulting heat-treated products into powder; and forming the resultant powdery mixture into a desired shape, which is then sintered in a non-oxidizing atmosphere.The process is characterized by heating powder (B), or powder (A) and powder (B), before sintering, thereby producing sintered silicon nitride body of highly improved properties.

    摘要翻译: 公开了一种生产氮化硅烧结体的方法,其包括: 将经热处理或未经热处理的氮化硅粉末的粉末(A)和通过在非氧化性气氛中热处理氮化硅粉末和烧结添加剂的粉末混合物得到的粉末(B)混合,然后研磨 将热处理产物变成粉末; 并将所得粉末混合物形成所需形状,然后在非氧化气氛中烧结。 该方法的特征在于在烧结之前加热粉末(B)或粉末(A)和粉末(B),由此制备具有高度改进性能的烧结氮化硅体。

    Method of producing sintered body of ceramics
    5.
    发明授权
    Method of producing sintered body of ceramics 失效
    制造陶瓷烧结体的方法

    公开(公告)号:US4327187A

    公开(公告)日:1982-04-27

    申请号:US122659

    申请日:1980-02-19

    摘要: Disclosed is a method of producing a sintered body of ceramics, wherein a powder mixture consisting, essentially of at most 10%, exclusive of 0%, by weight of yttrium oxide, at most 10%, exclusive of 0%, by weight of aluminum oxide, at most 10%, exclusive of 0%, by weight of aluminum nitride, at most 5%, exclusive of 0%, by weight of at least one material selected from the group consisting of titanium oxide, magnesium oxide and zirconium oxide, and the balance essentially of silicon nitride is sintered under a non-oxidizing atmosphere.

    摘要翻译: 公开了一种制造陶瓷烧结体的方法,其中粉末混合物基本上由至少10%(不包括0重量%)的氧化钇,至多10重量%,不包括0重量%的铝 氧化物,至多10%,不包括0重量%的氮化铝,至多5重量%,不包括0重量%的选自氧化钛,氧化镁和氧化锆中的至少一种材料, 并且在非氧化气氛下,基本上由氮化硅制成的平衡被烧结。

    Method for producing powder of .alpha.-silicon nitride
    7.
    发明授权
    Method for producing powder of .alpha.-silicon nitride 失效
    生产α-氮化硅粉末的方法

    公开(公告)号:US4264565A

    公开(公告)日:1981-04-28

    申请号:US121095

    申请日:1980-02-13

    摘要: A method for producing powder of .alpha.-silicon nitride which comprises the steps of:adding 0.3 to 2 parts by weight of powder of carbon and 0.005 to 1 paret by weight of at least one silicon compound selected from the group consisting of Si.sub.3 N.sub.4, SiC and silicon oxide nitride series compounds to one part by weight (as converted to SiO.sub.2) to a liquid silane derivative which produces a precipitate and HCl by hydrolysis and further causes SiO.sub.2 to be grown by the baking of said precipitate, or the precipitate produced by hydrolysis of the liquid silane derivatives;hydrolyzing the resultant mixture, if necessary;washing the mixture to separate a solid component, if necessary; andbaking the solid component for reduction and nitrogenization at a temperature of 1300.degree. to 1500.degree. C. in an atmosphere mainly consisting of a nitrogen gas or a gas of a nitrogen compound.

    摘要翻译: 一种生产α-氮化硅粉末的方法,包括以下步骤:将0.3至2重量份的碳粉和0.005至1重量份的至少一种选自Si 3 N 4,SiC的硅化合物和 氧化硅氮化物系列化合物与1重量份(转化为SiO 2)相对于通过水解产生沉淀物和HCl的液体硅烷衍生物,并且进一步通过焙烧所述沉淀生成SiO 2或通过水解生成的沉淀 液体硅烷衍生物; 如果需要,水解所得混合物; 如果需要,洗涤混合物以分离固体组分; 在1300〜1500℃的温度下,在氮气或氮化合物气体的气氛中焙烧固体成分。