104 ジルコニア系超塑性セラミックスの機械的特性の評価法による影響(超塑性と材料および造形法)

概要

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Structural ceramics are used under severe conditions such as those at high temperatures, in corrosive gas environment and for the parts for which high wear resistance is required It has become clear that some structural ceramics show superplasticity, i, e., very high ductility Fine-grained tetragonal zirconia containing 3 mol.% yttria polycrystals (3Y-TZP) is a typical superplastic ceramics, which shows very high ductility at elevated temperatures. When actually using it, a good grasp of mechanical characteristics is necessary and indispensable. Recently, variation of Vickers hardness values of neutron irradiated 3Y TZP was reported for different indentation loads. In this study, the effects of evaluation method on mechanical properties are discussed in some detail.
社団法人日本機械学会の論文
2007-09-28