Material based on a partially stabilized zirconia matrix with cerium oxide and yttrium oxide as stabilizing oxides of zirconia, a process for preparation and use of the material
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United States of America Patent
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Issued Date -
Nov 26, 2009
app pub date -
Oct 5, 2007
filing date -
Oct 5, 2006
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Abstract
A sintered ceramic material comprising: a) from 98-50% by volume of zirconia as a matrix, i) stabilized with a stabilizing composition having ii) of from about 2 to about 3 mole percent of yttria and of from about 10 to about 15 mole percent of ceria; wherein the term mole percent is related to the zirconia matrix and iii) the stabilizing composition is present in the range of from about 1:99 to about 99:1; and b) from about 2 to about 50% by volume of alumina of which from about 5 to about 90% by volume is in the form of hexagonal platelets of general formula REAl 11018, where RE stands for rare earth metal.
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