High toughness ceramic alloys

Details High toughness ceramic alloys High toughness ceramic alloys

C - Chemistry, Metallurgy

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B

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C04B 35/48 (2006.01) C04B 35/119 (2006.01) C04B 35/185 (2006.01) C04B 35/443 (2006.01) C04B 35/486 (2006.01) C04B 35/488 (2006.01) C04B 35/56 (2006.01) C04B 35/575 (2006.01) C04B 35/58 (2006.01) C04B 35/626 (2006.01) C04B 35/80 (2006.01)

Patent

CA 1247660

Abstract of the Disclosure 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.

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