2019 年 37 巻 4 号 p. 193-199
The joint of the self-induced fusion solidification bonding of aluminum is obtained by the isothermal fusion and the isothermal solidification by the reaction diffusion. The reaction diffusion between the dissimilar solid interfaces requires the fracture of the oxide film on the interface at the initial stage of the bonding process. The periodic motion of the interface promoted the fracture of the oxide film by the impact at the bonding interface. Increase of the frequency of the impact also will promote the fracture of the oxide film. The joint of the self-induced fusion solidification bonding under bonding pressure control was investigated with the periodic motion of the different frequency. The initial stage of the bonding process occurred in the short time by high frequency motion. Flash of the liquid from the interface occurred at the fixed impacts under a stable maximum pressure, regardless of the change of the frequency. High frequency motion reached the fixed number of the impact in the short time. However, middle frequency motion obtained the self-induced fusion solidification bond with maximum tensile strength, maximum bonding area ratio and maximum displacement of the bond. These results suggest that the deformation of the bonding interface promotes the self-induced fusion solidification bonding process.
