307 ジルコニア系超塑性材原料粉末を中間材に用いたAl_2O_3接合体の高温曲げ強度(関東支部茨城講演会)

概要

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Joining of alumina(Al_2O_3) polycrystal to itself or Ti-6Al-4V utilizing source powder of superplastic ceramics as an inserted material was examined for the bonding experiments. The 4-point bending test at room temperature and microstructural observation on the bonded states of the joints were carried out. The bonded specimens show good bending strengths at room temperature. The Al_2O_3 is one of high heat resistance materials. Therefore, 4-point bending tests at high temperatures and the observation on the fracture surfaces were also carried out. As the bending temperature approaches to the bonding temperature, the bonded specimens show good bending strengths. In this case, it seems that the residual thermal stresses caused by the thermal expansion difference between Al_2O_3 and inserted material or Ti-6Al-4V were relaxed.
一般社団法人日本機械学会の論文
2005-09-08