| 摘要 |
PURPOSE:To prepare an antimony oxide whisker consisting of a needle-like or rod-like single crystal, effectively, by calcining metallic antimony in an oxygen-containing atmosphere at or above a specific temperature. CONSTITUTION:The powder, granule, wire, rod, etc. of metallic antimony is used as a raw material, and is supplied to the perforated plate 15 through the feeding pipe 16. An oxygen-containing gas 12 heated at about 80 deg.C, e.g. air is introduced through the feeding port 13, passed through the quartz tube 11, and exhausted through the exhaust port 14. In the above state, the region near the perforated plate 15 is heated at >=450 deg.C by heating the inside of the quartz tube 11 with the heater 17. The metallic antimony is oxidized with the oxygen-containing gas 12, sublimed or evaporated successively in the form of antimony oxide, transferred upward, and discharged through the exhaust port 14 as antimony oxide whisker. The whisker is separated from the oxygen- containing gas by a proper means to obtain the objective antimony oxide whisker.
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