Stoichiometrically balanced silicon nitride ceramic for high performance cutting tools

摘要: A silicon nitride based ceramic, that is highly effective for use as a cutting tool the high speed machining of cast irons, essentially homogeneous mixture consisting both crystalline and whisker forms beta are interstitially bonded by stoichiometrically balanced glass magnesia, silica, yttria zirconia, where ratios each have been controlled to increase eutectic point refractoriness mixed glass.