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Influence of Ca2+ and Mg2+ as twinned ions on zirconia powder stability

E. VOLCEANOV1,* , A. VOLCEANOV2, S. STOLERIU2, C. PLAPCIANU3

Affiliation

  1. Metallurgical Research Institute- ICEM S.A., Dept. of Refractories & Advanced Ceramics, 39 Mehadia Str., sect.6, Bucharest, Romania
  2. University Politehnica of Bucharest, Romania
  3. National R&D Institute for Physics of Materials, Bucharest-Mgurele, Romania

Abstract

Microstructure and the sintering behaviour of zirconia with twinned stabiliser ions: Ca2+ + Mg2 in oxidative and in inert environment respectively obtained by solid state reactions method were studied. The specimens were cured at 1550 oC and 1750 oC in air in a kiln with methane gas. Samples with the same composition were sintered at 1550 oC in Argon in electrical furnace with (graphite electrodes). Their sinterability, microstructure as well as stability was studied The properties were compared as function of the processing route, the compositions stabilised in argon protective environment at 1550 oC or in air at 1750 oC, a totally stabilisation process was effective..

Keywords

Zirconia, Stabilisation, Sintering.

Submitted at: Jan. 18, 2006
Accepted at: March 23, 2006

Citation

E. VOLCEANOV, A. VOLCEANOV, S. STOLERIU, C. PLAPCIANU, Influence of Ca2+ and Mg2+ as twinned ions on zirconia powder stability, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 2, pp. 589-592 (2006)