Method for producing tubular body
AssigneeIbiden Co., Ltd.
InventorTakashi TAKAGI
Life of this patent
Estimating the term…
Abstract
A method for producing a tubular body includes winding ceramic fibers to form an aggregate with the ceramic fibers. The aggregate has a tubular shape. Pyrolytic carbon is vapor deposited on the aggregate to form a fiber-reinforced carbonaceous substrate. The pyrolytic carbon positioned at least on an outer surface of the fiber-reinforced carbonaceous substrate is converted to CVR-SiC by reaction with an SiO gas to form an CVR-SiC layer. CVD-SiC is deposited on a surface of the CVR-SiC layer after forming the CVR-SiC layer. An amount of silicon decreases from a boundary region to an inside of the fiber-reinforced carbonaceous substrate.
Claims12
A method for producing a tubular body, comprising:
- winding ceramic fibers to form an aggregate with the ceramic fibers, the aggregate having a tubular shape;
- vapor depositing pyrolytic carbon on the aggregate to form a fiber-reinforced carbonaceous substrate;
- converting the pyrolytic carbon located at least on an outer surface of the fiber-reinforced carbonaceous substrate to CVR-SiC by reaction with an SiO gas to form an CVR-SiC layer;
- and
- depositing CVD-SiC on a surface of the CVR-SiC layer after forming the CVR-SiC layer, an amount of silicon decreasing from a boundary region to an inside of the fiber-reinforced carbonaceous substrate.
A method for producing a tubular body, comprising:
- weaving strands including ceramic fibers to form an aggregate with the ceramic fibers, the aggregate having a braid form which has a hollow mesh body;
- vapor depositing pyrolytic carbon on the aggregate to form a fiber-reinforced carbonaceous substrate;
- converting the pyrolytic carbon positioned at least on an outer surface of the fiber-reinforced carbonaceous substrate to CVR-SiC by reaction with an SiO gas to form an CVR-SiC layer;
- and
- depositing CVD-SiC on a surface of the CVR-SiC layer after forming the CVR-SiC layer, an amount of silicon decreasing from a boundary region to an inside of the fiber-reinforced carbonaceous substrate.
Dependencies are inferred from the claim text.