欠陥を含むセラミックス/金属接合材の強度評価

概要

論文の詳細を見る
The bending strength of Si_3N_4/S45C joints with a Cu interlayer was examined. Some of the joints showed a relatively lower strength. The fracture mechanics approach was performed for the reduction of strength. The results obtained are as follows. (1) The reason why the strength decreases is the existence of the defect and the tensile residual stress near the interface at the ceramic side. The strength of the joint can be evaluated by the stress intensity factor. (2) In the case that the indentation precrack is introduced near the interface at the ceramic side, the interlayer deforms plastically and, as a result, the redistribution of residual stresses occurs and the precrack is kinked toward the interface. Thus, the indentation method is not suitable to introduce the precrack near the interface.
一般社団法人日本機械学会の論文
1991-03-25