Process for producing a sturdy refractory metal oxide article

Combustion – Incandescent mantle – Supported above upwardly facing fuel discharger

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264 60, 264 65, 264 66, 264221, 264317, 431100, 427159, C04B 3332, F21H 700

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052404072

ABSTRACT:
A process for producing a sturdy refractory metal oxide article includes the steps of heating a substrate of organic material impregnated with a metal compound to thermally decompose the compound without substantial thermal decomposition of the substrate, further heating to decompose and remove the organic material and complete conversion of the compound to a metal oxide so that a metal oxide replica of the substrate remains and further heating to sinter and densify the replica such that the replica has a strength (shock resistance) figure of merit of at least three g-meters and the replica retains such strength after heating to 1500 C.

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Martin, The Rare Earth Industry, Crosby, Lockwood and Son, London, (1918) pp. 14-29.
Ives, et al., "A Physical Study of the Welsbach Mantle", Journal of The Franklin Institute, vol. 186, (Oct. and Nov. 1918).
Kremers, Encyclopedia of Chemical Technology, "Gas Mantles" (1952) vol. 8, pp. 192-197.
Mason, "Development of Gaslight Emitters with Improved Durability", Inst. Gas Technol. Tech. Rep. No. 9 19 pages (1964).
Diver, et al. "Thoria Effusion Membranes" American Ceramic Society Bulletin, vol. 56, No. 11, (1977).

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