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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.123  No.1438 (June) (2015)  >  pp.492-500

Journal of the Ceramic Society of Japan
<<Previous article Vol.123  No.1438 (June) (2015)   pp.492 - 500 Next article>>

Tetragonal phase formed in liquid quenched ZrO2-9 mol % MgO and its thermal stability

Masao KOMATSU1), Akio OCHI1)
1) Department of Intelligence Machine, Hiroshima Institute of Technology

Ceramics were formed by the addition of magnesia to zirconia in the composition range of 0 to 50 mol %, and these ceramic materials were liquid quenched using an infrared image furnace and a twin roll process. The composition and structure of the liquid-quenched film samples were examined using X-ray diffraction and transmission electron microscopy. The results confirmed the formation of a high-temperature metastable phase (t′-phase) in ZrO2-9 mol % MgO partially stabilized zirconia (PSZ). The t′-phase that formed underwent a transition to the stable tetragonal phase (t-phase) during a suitable annealing treatment, but it was found not to undergo a phase transformation to the monoclinic phase (m-phase) in the presence of external stress. The t′-phase was confirmed to have three variants.


Keyword:
Mg-PSZ, Liquid-quench, TEM, XRD, EDS, t′-phase, Thermal stability

Received: January 08, 2015
Accepted: April 04, 2015 , Published online: June 01, 2015

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