| 摘要 |
This invention is directed to the production of ceramic alloys consisting essentially of partially stabilized ZrO2 and/or ZrO2-HfO2 solid solution and/or HfO2 exhibiting high toughness through The inclusion of about 0.5-8 mole %, as expressed on the oxide basis, of YNbO4, and/or YTaO4, and/or MNbO4 and/or MTaO4, wherein M represents Mg+2, Ca+2, Sc+3 and/or a rare earth metal ion selected from the group of La +3, Ce+4, Ce+3, Pr+3, Nd+3,Sm+3, Eu+ 3, Gd+3, Tb+3, Dy+3 H0+3,Er+3,Tm+3, Yb +3 , and Lu+3, substituted for Y, and,ceramic alloys to toughen hard refractory ceramics. |
