Method of manufacture of parts of three-dimensional fabrics
AssigneeCommissariat a l'Energie Atomique
InventorBernard Bouillon
Life of this patent
Estimating the term…
Abstract
A stack formed by layers of bidimensional fabrics or layers of parallel threads extending alternately from one layer to the next in a first direction and a second direction is sewn in parallel lines by means of a thread which extends in a third direction. The layers are stacked on a support of pyrolyzable material, the stack and the support being sewn by means of the thread which extends in the third direction. The assembly thus obtained is subjected to a temperature between 800.degree. C and 1200.degree. C in a stream of gaseous hydrocarbon in order to pyrolyze the material which constitutes the support and to deposit pyrolytic carbon on the threads which form the three-dimensional fabric.
Claims8
A method of manufacture of parts of three-dimensional fabrics of the type which consists in successively stacking layers of bidimensional fabrics or layers of parallel threads extending alternately from one layer to the next in a first direction and in a second direction, and sewing the stack thus formed in parallel lines by means of a thread which extends in a third direction, wherein said layers are stacked on a support of pyrolyzable material, wherein the stack of said layers and said support are sewn by means of the thread which extends in the third direction and wherein the assembly thus obtained is subjected to a temperature within the range of 800.degree. C to 1200.degree. C in the presence of a stream of gaseous hydrocarbon in order to pyrolyze the material which constitutes said support and in order to deposit pyrolytic graphite or carbon on the threads which form said three-dimensional fabric.
Dependencies are inferred from the claim text.