Ceramic-metal composite and method to form said composite
    10.
    发明授权
    Ceramic-metal composite and method to form said composite 有权
    陶瓷 - 金属复合材料和形成所述复合材料的方法

    公开(公告)号:US06296045B1

    公开(公告)日:2001-10-02

    申请号:US09133109

    申请日:1998-08-12

    IPC分类号: B22D1914

    摘要: A ceramic-metal composite that is tough and stiff has been prepared and is comprised of an inert ceramic (e.g., alumina) embedded and dispersed in a matrix comprised of a metal (e.g., aluminum), a reactive ceramic (e.g., boron carbide) and a reactive ceramic-metal reaction product (e.g., AlB2, Al4BC, Al3B48C2, AlB12, Al4C3, AlB24C4 or mixtures thereof) wherein grains of the inert ceramic have an average grain size greater than or equal to the average grain size of grains of the reactive ceramic. The ceramic-metal composite may be prepared by forming a mixture comprised of an inert ceramic powder (e.g., alumina) and a reactive ceramic powder (e.g., boron carbide), the inert ceramic powder having an average particle size equal to or greater than the average particle size of the reactive ceramic powder, forming the mixture into a porous body and consolidating the porous body in the presence of a metal (e.g., aluminum) to form the ceramic-metal composite.

    摘要翻译: 已经制备了韧性和刚性的陶瓷 - 金属复合材料,其包括嵌入和分散在由金属(例如铝),反应性陶瓷(例如碳化硼)组成的基体中的惰性陶瓷(例如氧化铝) 和反应性陶瓷 - 金属反应产物(例如,AlB2,Al4BC,Al3B48C2,AlB12,Al4C3,AlB24C4或其混合物),其中惰性陶瓷的晶粒的平均晶粒尺寸大于或等于晶粒的平均晶粒尺寸 活性陶瓷。 陶瓷 - 金属复合材料可以通过形成由惰性陶瓷粉末(例如氧化铝)和反应性陶瓷粉末(例如碳化硼)组成的混合物来制备,惰性陶瓷粉末的平均粒度等于或大于 反应性陶瓷粉末的平均粒度,将混合物形成多孔体,并在金属(例如铝)的存在下固化多孔体以形成陶瓷 - 金属复合材料。