Method of making porous ceramic fluoride

Glass manufacturing – Processes – With chemically reactive treatment of glass preform

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156663, 65 3013, C03C 2300

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049699431

ABSTRACT:
A process for making a porous ceramic composite where fumed silica particles are coated with a nitrate, preferably aluminum nitrate. Next the nitrate is converted to an oxide and formed into a desired configuration. This configuration is heated to convert the oxide to an oxide silicate which is then react with HF, resulting in the fluoride ceramic, preferably aluminum fluoride.

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Tkalcec, Formation of Barium Aluminum Fluoride During Removal of Glassy Phase, British Ceramic Trans. Journ., vol. 86, No. 2, 1987, pp. 52-57.

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