ウォルフラマイト劈開面の表面酸化の電子回折的研究
1954 年 23 巻 10 号 p. 459-462
詳細
1954 年 23 巻 10 号 p. 459-462
The wolframite ((Fe, Mn)WO4) cleavage faces oxidized in open air have been inspected by means of electron diffraction. It is shown that oxidation of wolframite commences at about 460°C. Over the range of 460°_??_1000°C the oxidation product is always hematite (α-Fe2O3) alone; no oxides of manganese and tungsten are observed. The crystallites of hematite grow always epitaxially on the substrate. Many crystallographical planes developed on the cry-stallites are analyzed. In addition, possible explanations for many irrational spots observed in the diffraction patterns are put forward.
