マグネシウム及びマグネシウム合金中の水素に関する研究

概要

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The determination of hydrogen content in Magnesium has been discussed firstly. Hydrogen in magnesium is extracted by three different methods-vacuum fusion, vacuum evaporation, and a sample sealed in a palladium tube or in a thin iron sheet. Among those three methods, the method of vacuum extraction with a sample sealed in a palladium tube shows the highest reliability for determination of hydrogen content in magnesium. Magnesium produced by the Pidgeon process contains about 18∿22cc H_2 per 100 grams of magnesium. The solubility of hydrogen in magnesium and its alloys has been discussed secondly. The solubility of hydrogen in magnesium between 200゜ and 750℃ is measured by using a modified Sieverts' apparatus. The sample is sealed in a thin-walled stainless tube to prevent evaporation of magnesium and consequent contamination of the system. The solubility of hydrogen in magnesium vs. temperature will be given by the equations. Log S (solid) cc H_2/100g. Mg=-1.1×10^3/T+2.69 Log S (liquid) ccH_2/100g. Mg=-1.4×10^3/T+3.21 The alloying elements such as Pb, Zn, Cu, Sb, Sn and Al do not vary much the solubility of hydrogen in liquid magnesium, while Mn and Ni increase it.
東海大学の論文
1974-06-22