Claims
- 1. A method for producing a prosthetic article, comprising the steps of:
- passing a fugitive fiber through a slurry comprising a carbon powder filler and a thermosetting carbon precursor binder to coat said fiber with said slurry;
- winding said fiber into a generally elliptical toroidal configuration having cross sections containing a parallel array of fibers created by the arrangement of said fugitive fiber, said parallel array of fibers having interstices between said fibers substantially filled with said slurry;
- setting said binder to create a cured configuration;
- cutting said cured configuration at points substantially perpendicular to said parallel array to produce a plurality of generally cylindrical sections having said parallel array of fibers embodied therein with said fibers being substantially parallel to the axis of each said cylindrical section;
- destructively removing said parallel array of fibers from said cylindrical sections to leave uniformly dispersed generally parallel pores having a diameter within the range of 100 to 1000 micrometers within carbon precursor relics; and
- carbonizing said relics.
- 2. The method according to claim 1 further including graphitizing said relic.
- 3. The method according to claim 1 wherein said step of removing comprises volatilizing said fiber by heating.
- 4. The method according to claim 1 wherein said step of removing comprises etching said fiber.
- 5. The method according to claim 1 wherein said fiber is selected from the group consisting of nylon, copper, tin, and iron.
- 6. The method according to claim 1 wherein said carbon powder comprises raw air-blown coke, calcined air-blown coke, and carbon black, said binder is selected from the group consisting of pre-polymerized furfuryl alcohol and coal tar pitch and said slurry further comprises acetone as a solvent.
- 7. The product produced by the process of claim 1.
Government Interests
This invention was made in the course of, or under, a contract with the United States Atomic Energy Commission. It relates generally to a carbon or graphite prosthetic device and to a method of producing such a device.
US Referenced Citations (5)