Gelcasting of CRYSTAR{reg_sign} silicon carbide ceramics. CRADA final report

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This Cooperative Research and Development Agreement (CRADA) was undertaken to assess the applicability the gelcasting process for forming ceramic green bodies using Saint-Gobain/Norton Industrial Ceramics Corporation`s proprietary CRYSTAR{reg_sign} silicon carbide powder. A gelcasting process, specifically tailored to Saint-Gobain/Norton`s powder composition, was developed and used successfully to form green bodies for property evaluation. This preliminary evaluation showed that the gelcast material had characteristics and properties comparable to Norton`s baseline material. Wafer carrier molds were received from Norton for gelcasting a complex-shaped configuration with CRYSTAR{reg_sign} silicon carbide. Gelcasting experiments showed that Norton`s standard plaster of paris molds were incompatible with the gelcasting ... continued below

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10 p.

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Nunn, S.D. & Willkens, C.A. December 31, 1998.

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Description

This Cooperative Research and Development Agreement (CRADA) was undertaken to assess the applicability the gelcasting process for forming ceramic green bodies using Saint-Gobain/Norton Industrial Ceramics Corporation`s proprietary CRYSTAR{reg_sign} silicon carbide powder. A gelcasting process, specifically tailored to Saint-Gobain/Norton`s powder composition, was developed and used successfully to form green bodies for property evaluation. This preliminary evaluation showed that the gelcast material had characteristics and properties comparable to Norton`s baseline material. Wafer carrier molds were received from Norton for gelcasting a complex-shaped configuration with CRYSTAR{reg_sign} silicon carbide. Gelcasting experiments showed that Norton`s standard plaster of paris molds were incompatible with the gelcasting process. Mold surface treatments and the use of alternative castable mold materials were investigated, however, a successful process was not identified. The highest quality parts were cast in either glass or aluminum molds.

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10 p.

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OSTI as DE98051355

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  • Other Information: PBD: [1998]

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  • Other: DE98051355
  • Report No.: ORNL--98051355
  • Report No.: C/ORNL--94-0250
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/594505 | External Link
  • Office of Scientific & Technical Information Report Number: 594505
  • Archival Resource Key: ark:/67531/metadc692620

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Office of Scientific & Technical Information Technical Reports

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  • December 31, 1998

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  • Aug. 14, 2015, 8:43 a.m.

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  • Jan. 25, 2016, 6:15 p.m.

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Nunn, S.D. & Willkens, C.A. Gelcasting of CRYSTAR{reg_sign} silicon carbide ceramics. CRADA final report, report, December 31, 1998; Tennessee. (digital.library.unt.edu/ark:/67531/metadc692620/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.