アルミニウム中のガス―現場測定用分析計の試作について―

抄録

The on-the-spot method of analysis reported in this paper is the thermal conductivity method using the semi-conductor thermister gas analyser, which enablesus to determine the amount of gas evolved at the time of setting of the molten aluminium metal within ten minutes. The summary of the results obtained is as follows. (1) With regard to the type of alloys, the amount of gas evolved increases in the order of 17S, 2S, 75S, and 56S, and further, the amount of gas evolved will be influenced by the proportion of scraps used. (2) The above-mentioned method for analysis is more effective in the analysis of gas in alloys than in the analysis of gas in 1S or 2S. (3) The reaction of pure aluminium with steam is very rapid, and hydrogen gas is absorbed during melting.