Publication
Two-step sintering of nanocrystalline zirconia powder stabilized with 8 mol% yttria resulted in remarkable enhancement of the electrical conductivity and significant suppression of the accelerated grain growth. The electrical conductivity of the nearly full-dense structures obtained with an average grain size of 2.15 mu m at 900 degrees C was similar to 107 mS/cm. Two-step sintering resulted in reduction of the grain size to less than 300 nm and increase of the electrical conductivity to 209 mS/cm (i.e. >95% increase). These changes accompanied with a fracture toughness increase of more that 95% (from 1.61 to 3.16 MPa m(1/2)), too. (C) 2010 Elsevier B.V. All rights reserved.
Jan Van Herle, Marco Cantoni, Guillaume Jeanmonod, Lucie Navratilova, Arata Nakajo, Priscilla Caliandro, Giorgio Rinaldi
Paul Muralt, Ramin Matloub Aghdam, Silviu Cosmin Sandu, Stefan Mertin, Mohammad Fazel Parsapour Kolour, Vladimir Pashchenko