Wick materials by sol-gel processing

Details Wick materials by sol-gel processing Wick materials by sol-gel processing

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..387..601n&link_type=abstract

Space technology and applications international forum (STAIF - 97). AIP Conference Proceedings, Volume 387, pp. 601-606 (1997).

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Applications

Porous Materials, Granular Materials, Sol-Gel Processing, Precipitation

Scientific paper

In capillary pumped loops (CPL) devices, the fine porous wick, located in the evaporator, provides the means for passively pumping the fluid through the system, using surface tension forces exerted onto a liquid in a small diameter pore at the liquid/vapor interface. The Naval Research Laboratory's Materials Science and technology Division and Naval Center for Space Technology have been investigating the use of sol-gel processing for development of organically modified ceramic wicks with micron or submicron pores, high porosity, low thermal conductivity and structural flexibility. Gels with average pore sizes as small as 0.5 μm, 30-80% continuous porosity, some flexibility and thermal stability to at least 473K were successfully prepared. Microstructures of these hybrids were examined by scanning electron microscopy (SEM), and some conventional wick property testing were performed.

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