3 mol%Y_2O_3-ZrO_2の強弾性ドメインスイッチングに及ぼす相分離の影響

概要

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The effect of phase separation on ferroelastic domain switching in 3 mol%Y_2O_3-ZrO_2 pseudo-single crystals annealed at 1700℃ was examined. Domain switching occurred in two steps. From TEM analysis, the first step seemed to be the switching of t'-phase, and the second to be that of t-phase. The effect of phase separation is as follows. First by, the switching amount of t'-phase decreased with decrease of the volume fraction, whereas that of t-phase increased with increase of the one. Secondly, the critical stress of t'-and t-phase in creased with growth of t-phase colony. This is because that the clamping force among these phases for domain switching increase. Especially the critical stress of t-phase was strongly effected by the colony size of t-phase.
社団法人日本セラミックス協会の論文
1997-12-01