Abstract
The influence of the atmospheric gas on neck growth is examined theoretically and experimentally, as one of the methods confirming the new sintering equation proposed in the previous paper.
The probability surmounting the formation energy of vacancy on the surface is calculated from the amount of momentum and energy transferred to the atoms on the solid surface from the gas molecules by the collision. The probability becomes higher with increasing the molecular weight of gas. In this result it is estimated that the rate of neck growth will change with the kinds of atmospheric gas.
In the experiments of sintering between the copper wires, the neck radius grows larger in the Ar gas than the He gas. This means that the neck growth is changed by the atmospheric gas, so that the new sintering equation is confirmed.
