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publicationDate 1980-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-4218253-A
titleOfInvention Sintered ceramic material of improved ductility
abstract The ductility of sintered bodies of alumina and like hard substances can be improved without loss in mechanical strength by uniformly distributed individual particles of tetragonal zirconia or hafnia in amounts of 1%-50% by volume if the dispersed particles have an average size of 0.05 to 2 μm.
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