Aluminum-boron-carbon abrasive article and method to form said article
    5.
    发明授权
    Aluminum-boron-carbon abrasive article and method to form said article 失效
    铝 - 硼 - 碳磨料制品和形成所述制品的方法

    公开(公告)号:US6042627A

    公开(公告)日:2000-03-28

    申请号:US69531

    申请日:1998-04-29

    摘要: An aluminum-boron-carbon abrasive article is comprised of at least three phases selected from the group consisting of: B.sub.4 C; AlB.sub.2 ; AlB.sub.12 ; AlB.sub.12 C.sub.2 ; Al.sub.4 C.sub.3 ; AlB.sub.24,C.sub.4 ; Al.sub.4 B.sub.1-3 C.sub.4 ; AlB.sub.24 C.sub.4 and Al.sub.4 BC. At least a portion of the surface of the abrasive article is comprised of abrasive grains of at least one phase selected from the group consisting of AlB.sub.24 C.sub.4, Al.sub.4 BC and AlB.sub.2, where the abrasive grains have an average grain size that is at least about two times greater than the average grain size of the grains containing boron and carbon within the abrasive article. The aluminum-boron-carbon abrasive article of claim 1 is prepared by heating, under a vacuum or inert atmosphere, a body comprised of at least one boron containing phase and at least one carbon containing phase in the presence of a separate source of aluminum, such as aluminum metal or alloy thereof. The boron and carbon containing phase each are selected from the group consisting of: B.sub.4 C; AlB.sub.2 ; AlB.sub.12 ; AlB.sub.12 C.sub.2 ; Al.sub.4 C.sub.3 ; AlB.sub.24,C.sub.4 ; Al.sub.4 B.sub.1-3 C.sub.4 ; AlB.sub.24 C.sub.4 and Al.sub.4 BC. The body is heated with the separate source of aluminum, such that at least a portion of the surface of the body is contacted by liquid or vaporous aluminum for a time and temperature sufficient to form the aluminum-boron-carbon abrasive article.

    摘要翻译: 铝 - 硼 - 碳磨料制品由选自以下的至少三个相组成:B4C; AlB2; AlB12; AlB12C2; Al4C3; AlB24,C4; Al4B1-3C4; AlB24C4和Al4BC。 磨料制品的表面的至少一部分由选自AlB24C4,Al4BC和AlB2的至少一相的磨粒组成,其中磨粒的平均粒度为至少约两倍 比研磨制品中含有硼和碳的颗粒的平均粒度大。 权利要求1的铝 - 硼 - 碳磨料制品通过在单独的铝源的存在下,在真空或惰性气氛下加热由至少一种含硼相和至少一种含碳相组成的主体来制备, 例如铝金属或其合金。 含硼和碳的各自各自选自:B4C; AlB2; AlB12; AlB12C2; Al4C3; AlB24,C4; Al4B1-3C4; AlB24C4和Al4BC。 身体与单独的铝源一起加热,使得身体表面的至少一部分与液体或气态铝接触足够长的时间和温度以形成铝 - 硼 - 碳磨料制品。