Influence of the element Cu on hydrogen content in molten aluminum

摘要

The hydrogen content in molten Al-Cu alloy retains constant up to about 780 deg C with increasing temperature, but it rises straight above this temperature. The effects of alloying element are theoretically analyzed in terms of Wagner' interaction parameter. Furthermore, analyses indicate that the alloy element Cu plays an important role in the hydrogen content in superheated Al-Cu alloy melt below about 780 deg C. We draw the conclusion that the degree of gassing in molten Al-Cu alloy is bound up with the properties of oxide film of Al alloy melts. The results make it clear that the hydrogen content in the molten aluminum reduces with increasing element Cu, which is dissolved in aluminum melts at the same temperature.