作者: Elizabeth R. Billman , Pankaj Kumar Mehrotra
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摘要: A metalcutting insert is provided with an alumina based ceramic composition composed of (in volume percent, v/o): about 1.5 to 17.5 silicon carbide whiskers; 5 zirconia; residue a magnesium oxide addition added in amount effective enhance the lifetime cutting edge insert; and matrix which whiskers, zirconia are substantially homogeneously distributed. At least 4 v/o tetragonal zirconia.