窒化ケイ素とAg-Cu-Ti系活性金属との接合界面の解析

抄録

Surface analysis of the ceramic-steel interface joined with an active metal and brazing metal foils was carried out by SEM, TEM, EDX and XPS. The analyzed specimen was the sintered silicon nitride joined to SNCM steel by Ti metal and Ag/Cu (72/28) brazing metal.
(1) Two reaction layers were produced between Si₃N₄ and braze.
(2) A reaction layer facing Si₃N₄ (layer I) was about 300nm thick and composed mainly of titanium nitride (TiN).
(3) The other reaction layer (layer II) between layer I and the braze was composed of titanium nitride (TiN) and silicide (Ti₅Si₃). The thickness of this layer was about 3μm.