Si-Ti-C-O繊維結合セラミックスとFe-Cr-Niステンレス鋼のAg-Cu-Tiろう材を用いた接合

概要

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Joining of a Si-Ti-C-O fiber-bonded ceramic and an Fe-Cr-Ni stainless steel with a Ag-Cu-Ti brazing alloy was carried out.For relaxation of thermal stress caused by thermal expansion mismatch between the ceramic and the stainless steel, a thin copper plate was set between the specimens to be joined.Joining strength was evaluated by a four-point bending test at room temperature.The highest strength of ceramic/stainless steel joint attained in this study was 230 Mpa.The scattering of the strength was narrow.The ceramic-side fracture surfaces of the joints were divided into many regions by fiber/matrix interfacial cracks.It was inferred that those fiber/matrix interfacial cracks, which were perpendicular to the main crack along the joining interface, decreased the stress intensity factor of the main crack and increased the strength of the joint.
社団法人日本セラミックス協会の論文
1998-09-01