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Effect Of Alumina Dopant On Transparency Of Tetragonal Zirconia

Haibin Zhang, Zhipeng Li, Byung-Nam Kim, Koji Morita, Hidehiro Yoshida, Keijiro Hiraga, Yoshio Sakka

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Aiming to characterize the effect of alumina dopant on transparency, powders of yttria stabilized tetragonal zirconia doped with alumina (TZ-3Y-E) are used as starting material to fabricate transparent tetragonal ZrO2by high-pressure spark plasma sintering (HP-SPS). However, low transparency of the resultant TZ-3Y-E specimens does not suggest a beneficial effect of alumina dopant although nanometric grains and high density have been achieved. The mechanism is analyzed by comparing with the results of as-sintered yttria stabilized tetragonal zirconia without alumina dopant.