研究論文
ガスクロマト法による熔融アルミニウム中の水素ガス分析法
1960 年 32 巻 1 号 p. 40-44
詳細
1960 年 32 巻 1 号 p. 40-44
Hydrogen content of molten aluminium was determined by the gas chromatographic method. Evolution rate of hydrogen which was drived from the molten aluminium by bubbling nitrogen was recorded with elapsed time, and the total hydrogen content was measured from the chromatogram.
Compared the chromatographic determination with density measurement on the same melt, and this method is confirmed to be credible enough.
The operation is much easier when the flow rate of nitrogen bubbling is in the range of 40∼120 c.c./mn. The time for degassing and the flow rate of nitrogen bubbling show a linear relation independently from the content of dissolved hydrogen, in the above range of nitrogen bubbling flow rate. So that the time degassing seems only to be concerned to the bubbling flow rate of nitrogen.
