Blackbody material
AssigneeMartin Marietta Energy Systems, Inc.
InventorsRobert J. Lauf, Clyde Hamby, Jr., M. Alfred Akerman, Alvin W. Trivelpiece
Life of this patent
Estimating the term…
Abstract
A light emitting article comprises a composite of carbon-bonded carbon fibers, prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000.degree. C. to form a carbon-bonded carbon fiber light emitting composite article having a bulk density less than 1 g/cm.sup.3.
Claims35
A light emitting article comprising a composite of carbon-bonded carbon fibers, said composite having a bulk density of not more than about 1 g/cm.sup.3, said composite having the form of a light emitting article.
An optical device comprising, in combination:
- a light sensing component for receiving light energy and producing useful information therefrom;
- and,
- a light emitting component for calibrating said light sensing component, said light emitting component comprising a composite of carbon-bonded carbon fibers, said composite having a bulk density of not more than about 1 g/cm.sup.3.
A process for preparing a light emitting article comprising the steps of:
- a. blending carbon fibers with a carbonizable organic powder to form a mixture;
- b. dispersing said mixture into an aqueous slurry;
- c. vacuum molding said aqueous slurry to form a green article;
- d. drying and curing said green article to form a cured article;
- and,
- e. carbonizing said cured article at a temperature of at least about 1000.degree. C. to form a carbon-bonded carbon fiber light emitting composite article having a bulk density less than 1 g/cm.sup.3.
Dependencies are inferred from the claim text.