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  • 1
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    Advanced Porous Coating for Low-Density Ceramic Insulation Materials (1989)
    Wiley
    Details
    Publication Date: 1989-06-01
    Print ISSN: 0002-7820
    Electronic ISSN: 1551-2916
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Wiley on behalf of American Ceramic Society.
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    PAPER CURRENT
  • 2
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    Toughened uni-piece fibrous insulation (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A porous body of fibrous, low density silica-based insulation material is at least in part impregnated with a reactive boron oxide containing borosilicate glass frit, a silicon tetraboride fluxing agent and a molybdenum silicide emittance agent. The glass frit, fluxing agent and emittance agent are separately milled to reduce their particle size, then mixed together to produce a slurry in ethanol. The slurry is then applied to the insulation material and sintered to produce the porous body.
    Keywords: COMPOSITE MATERIALS
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Protective coating for ceramic materials (1994)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A protective coating for ceramic materials such as those made of silicon carbide, aluminum oxide, zirconium oxide, aluminoborosilicate and silicon dioxide, and a thermal control structure comprising a ceramic material having coated thereon the protective coating. The protective coating contains, in admixture, silicon dioxide powder, colloidal silicon dioxide, water, and one or more emittance agents selected from silicon tetraboride, silicon hexaboride, silicon carbide, molybdenum disilicide, tungsten disilicide and zirconium diboride. In another aspect, the protective coating is coated on a flexible ceramic fabric which is the outer cover of a composite insulation. In yet another aspect, a metallic foil is bonded to the outer surface of a ceramic fabric outer cover of a composite insulation via the protective coating. A primary application of this invention is as a protective coating for ceramic materials used in a heat shield for space vehicles subjected to very high aero-convective heating environments.
    Keywords: NONMETALLIC MATERIALS
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Ceramic Fairings for A Hypersonic Flight Experiment (1998)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: Fairings composed of Rigid Fibrous Insulations (RSI) were fabricated, instrumented, and coated using techniques that were recently developed at NASA Ames Research Center. These RSI components are part of a specific assembly of materials which were built onto a wing of a Pegasus flight vehicle. The assembly was designed to collect aerothermal data during a designated mission to deliver a satellite to earth orbit. The objective of the flight experiment is to validate the theory of boundary layer transition at flight speeds in excess of Mach 3. The actual flight experiment is scheduled to occur during the summer of 1998. Fabrication and installation methodologies will be discussed with a brief description of the wing glove assembly.
    Keywords: Nonmetallic Materials
    Type: American Ceramic Society''s 100th Annual Meeting and Exposition; May 03, 1998 - May 06, 1998; Cincinnati, OH; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Advanced Porous Coating for Low-Density Ceramic Insulation Materials (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The need for improved coatings on low-density reusable surface insulation (RSI) materials used on the space shuttle has stimulated research into developing tougher coatings. The processing of a new porous composite "coating" for RST called toughened unipiece fibrous insulation Is discussed. Characteristics including performance in a simulated high-speed atmospheric entry, morphological structure before and after this exposure, resistance to Impact, and thermal response to a typical heat pulse are described. It is shown that this coating has improved impact resistance while maintaining optical and thermal properties comparable to the previously available reaction-cured glass coating.
    Keywords: Nonmetallic Materials
    Type: Composites and Advanced Ceramics; Jan 19, 1988; Cocoa Beach, FL; United States|Journal of the American Ceramic Society; 72; 6; 1003-1010
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Ceramic-Fibrous-Insulation Thermal-Protection System (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: New composite thermal-protection system developed in which glass-ceramic impregnated into surface of fibrous insulation. Called TUFI for toughened unipiece fibrous insulation developed as replacement for tiles with reaction-cured-glass (RCG) coating. Impregnation of glass-ceramic results in thermal protection system with insulating properties comparable to existing system but with 20 to 100 times more resistance to impact.
    Keywords: MATERIALS
    Type: ARC-11888 , NASA Tech Briefs (ISSN 0145-319X); 16; 1; P. 48
    Format: text
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    NASA TECHNICAL REPORTS
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