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    • 1. 发明授权
    • Method of making silicon nitride-bonded silicon carbide honeycomb filters
    • 制造氮化硅结合碳化硅蜂窝过滤器的方法
    • US06699429B2
    • 2004-03-02
    • US10210308
    • 2002-08-01
    • Yanxia LuDale R. WexellElizabeth M. Wheeler
    • Yanxia LuDale R. WexellElizabeth M. Wheeler
    • C04B3332
    • C04B38/0006C04B35/565C04B35/584C04B38/0022
    • A process for forming a silicon nitride-bonded silicon carbide honeycomb monolith by a) forming a plasticizable mixture which includes (1) about 60% to 85% by weight, powdered silicon carbide with a median particle size of about 10-40 micrometers; (2) about 15% to 40% by weight, powdered silicon metal with a median particle size of about 5-20 micrometers; and, (3) organic components; b) extruding the plasticizable mixture to form a green honeycomb monolith; c) drying the green honeycomb monolith; and, d) heating the honeycomb monolith to 1450° C. with a hold of 1 hour in an atmosphere of argon; and, e) nitriding the honeycomb monolith between 1450° C. to 1600° C. for a time sufficient to obtain a silicon nitride-bonded silicon carbide body.
    • 一种通过以下步骤形成氮化硅结合的碳化硅蜂窝体整体的方法:a)形成可塑化混合物,其包括(1)约60%至85%(重量)的中等颗粒尺寸为约10-40微米的粉末状碳化硅; (2)约15〜40重量%,中等粒度为约5-20微米的粉末状硅金属; 和(3)有机成分; b)挤出可塑化混合物以形成绿色蜂窝状整料; c)干燥绿色蜂窝状整料; 和d)在氩气气氛中保持1小时将蜂窝体整体加热至1450℃; 并且e)在1450℃至1600℃之间将蜂窝状整体氮化,达到足以获得氮化硅结合的碳化硅体的时间。