超塑性材を中間材に用いるAl_2O_3接合体の高温曲げ特性(オーガナイズドセッション,超塑性と材料および造形法)

概要

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Joining of alumina (Al_2O_3) to itself utilizing superplastic ceramics as insert material was performed. Effect of bonding stress was examined for the bonding experiments. The 4-point bending test and observation on the bonded states were carried out. The bonded specimens show good bonding strengths at room temperature under some bonding conditions. The Al_2O_3 is one of high heat resistance materials. In this study, 4-point bending tests at high temperatures and observation on the fracture surfaces for the joint were carried out. As the bending temperature approaches to bonding temperature, the bonded specimens show good bending strengths. In this case, it seems that the residual thermal stresses due to the thermal expansion difference between Al_2O_3 and insert material were relaxed.
一般社団法人日本機械学会の論文
2004-09-23