On the Liquidus Surface and Reaction Scheme of the Ternary System Cu-Si-Ti

Abstract

The ternary system Cu-Si-Ti was investigated using XRD, SEM-EDX, and DTA. The existence of two ternary phases τ1-CuSiTi and τ2-TiSi2-xCux as well as their crystal structures are confirmed. The isothermal section at 800°C is corroborated. From DTA data of equilibrated alloys a reaction scheme linking the isotherm at 700°C with the liquidus surface is derived. Using data on primary crystallisation of as cast alloys a projection of the liquidus surface is proposed.

Joining of silicon nitride ceramic to oxygen‐free copper using Ag–Cu–TiH2 filler

“…Moreover, as the TiN layer generated tends to be dense, 32 the thickness of the TiN layer remains unaffected by variations of the Ag:Cu ratio. The ternary Cu–Ti–Si system is reported to produce the liquid phase at about 845°C 59,60 . Accordingly, the released Si dissolves into liquid L2, resulting in the formation of Cu–Ti–Si(l), as expressed by reaction (1).…”

“…Evolutionary model of the brazing liquid: (A) evolution of Ag-Cu-Ti(l); (B) evolution of Cu-Ti-Si(l); (C) evolution of Cu-Ti-O(l); (D) cooling of the brazing liquid.tends to be dense,32 the thickness of the TiN layer remains unaffected by variations of the Ag:Cu ratio. The ternary Cu-Ti-Si system is reported to produce the liquid phase at about 845 • C 59,60. Accordingly, the released Si dissolves into liquid L2, resulting in the formation of Cu-Ti-Si(l), as expressed by reaction(1).…”