ジルコニア・アルミナ複合セラミックスの弾性変形のX線的研究

概要

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The X-ray diffraction method was used to measure the phase stress in composite ceramics of zirconia mixed with 20 and 40 wt% alumina which were subjected to elastic bending. The phase stress each phase was determined from the diffraction of Al_2O_3(146), Al_2O_3 (1.0.10) and ZrO_2(133). The phase stress increased in proportion to the applied stress ; the proportional constant was larger for Al_2O_3 than for ZrO_2. The macrostress calculated from the phase stresses by using the rule of mixture was nearly equal to the applied stress.athe theoretical calculation based on the self-consistent model of elastic deformation of composites gave a lower phase stress to Al_2O_3 and a higher phase stress to ZrO_2 when compared with the experimental results. The theoretical analysis should be elaborated to include the influences of the free surface and the third phase on phase stresses.
社団法人日本材料学会の論文
1990-09-15