窒化アルミニウム粉体の表面状態とその耐水処理

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タイトル別名
  • Surface States of Aluminum Nitride Powder and Its Waterproof Treatment.
  • チッカ アルミニウム フンタイ ノ ヒョウメン ジョウタイ ト ソノ タイスイ

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説明

The surface states of aluminum nitride powders prepared by the direct nitriding of aluminum and the reduction-nitriding of alumina respectively, were investigated by means of X-ray photoelectron spectroscopy (XPS), temperature programmed desorption (TPD) and FT-IR spectroscopy. Four kinds of elements, aluminum, nitrogen, oxygen and carbon were observed on the surface of the samples. The surface concentration of oxygen was about 30 times larger than the bulk concentration, and the surface oxygen was involved in the formation of the thin layer of aluminum oxide and hydroxide. A new waterproof technique for aluminum nitride powders could be developed by treating them in a stream of carbon dioxide gas containing saturated steam at room temperature. The structure of the surface-stabilized samples was characterized by TPD and FT-IR measurements, and the surface thin film was composed of an ammonium aluminum carbonate hydroxide.

収録刊行物

  • 粉体工学会誌

    粉体工学会誌 29 (9), 682-687, 1992

    一般社団法人 粉体工学会

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