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Tetragonal polycrystalline zirconia
Yttria blends of approximately 3% are called Tetragonal Zirconia Polycrystal (TZP) and have the finest grain size. These grades exhibit the highest toughness at room temperature, because they are nearly 100% tetragonal, but this degrades severely between 200 and 500°C as these irreversible crystal transformations also cause dimensional change.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tetragonal_polycrystalline_zirconia". A list of authors is available in Wikipedia.|