Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1989-10-31
1992-08-25
Hruskoci, Peter
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
2101982, 2105021, 210635, 4283157, 428404, 530413, 530417, 502401, 502402, 427243, 427245, B01D 1508
Patent
active
051418061
ABSTRACT:
A microporous structure with layered interstitial surface treatments, and method and apparatus for preparation thereof. The structure is prepared by sequentially subjecting a uniformly surface-treated structure (10a) to atomic oxygen treatment to remove an outer layer (16) of surface treatment to a generally uniform depth, and then surface treating the so exposed layer with another surface treating agent. The atomic oxygen/surface treatment steps may optionally be repeated, each successive time to a lesser depth, to produce a microporous structure having multilayered surface treatments. The apparatus (200) employs at least one side arm (228) from a main atomic oxygen-containing chamber (202). The side arm (228) has characteristic relaxation times such that a uniform atomic oxygen dose rate is delivered to a specimen (239) positioned transversely in the side arm (228) spaced from the main gas chamber (202).
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Barr Hardie R.
Fein Edward K.
Hruskoci Peter
McCarthy Neil M.
Miller Guy M.
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