Effects of Atmosphere, Temperature, Pressure and Holding Time on Solid State Bonding of Ni-Al₂O₃ System

Abstract

Solid state joining between Ni and Al₂O₃ was carried out under various experimental conditions.
Main results are as follows;
Bonding strength depended on atmosphere, bonding time, bonding temperature, and bonding pressure.
Bonding strength in a reducing atmosphere is higher than in an inert atmosphere and in an air atmoshere.
The higher the bonding temperature, the higher the bonding strength.
Desirable bonding time and clamping pressure are 3.6 ks and c.a. 2.5 MPa, respectively.
The experimental conditions which produced the maximum bonding strength (86 MPa) were at 1673 K, in a reducing atmosphere, 3.6 ks of bonding time, and 3 MPa of clamping pressure.