| 摘要 |
A ZrO<SUB>2</SUB> based ceramic material comprised of ZrO<SUB>2</SUB> grains containing Ce0<SUB>2</SUB> as a stabilizer and having an average grain size of about 1 µm or less, at least 95% of the ZrO<SUB>2</SUB> grain having a tetragonal phase, the ceramic material containing at least 15 wt%. cerum oxide and 0.1 wt% to 0.4 wt% manganese oxide.
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