Pyrocarbon and process for depositing pyrocarbon coatings

Details Pyrocarbon and process for depositing pyrocarbon coatings Pyrocarbon and process for depositing pyrocarbon coatings

1996-01-16

1997-10-14

Dudash, Diana

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

428403, 264 296, 264 297, B32B 900, C01B 3100

Patent

active

056770618

ABSTRACT:
Pure unalloyed pyrocarbons having wear resistance suitable for use in pyrocarbon-coated heart valve components and having mechanical properties, such as flexural strength and toughness, superior to commercial silicon-alloyed pyrocarbons are deposited in fluidized bed coaters. Coating conditions are carefully controlled so as to maintain a precise bed size within a defined coating enclosure which will assure a substantially constant surface deposition temperature that in turn assures deposition of homogenous unalloyed pyrocarbons having these improved mechanical properties.

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