鉄Whiskerの製造に関する研究

抄録

The growth of whiskers by reduction of iron oxide-iron halide mixture has been widely investigated so far, and the mechanism of growth of whiskers has been reported.
The growth condition of iron whisker by the hydrogen gas reduction of iron halide is being clarified (at the author's laboratory) with a view to the industrial use of iron whiskers.
The effect of added materials and the kind of boats used for the growth of whiskers have been especially investigated.
The results are as follows.
1) The addition of hematite ore was better than magnetite ore.
2) The addition of 15% Fe₂O₃ by volume gave good results.
3) It was clear that the growth of iron whiskers was not due to the presence of Fe₂O₃ but to that of Fe from the experiments using iron boats and alumina boats respectively.
4) Impurities from the reduction boat and from the added materials entered into the iron whiskers produced.
5) Long (8cm at the most) iron whiskers could be produced by controlling the reduction gas volume and vapour pressure of FeCl₂ in the reaction vessel.