Device for coating one or more yarns by a vapor deposition method

Patent metadata

Field	Value
Publication number	US-10619291-B2
Application number	US-201615777538-A
Country	US
Kind code	B2
Filing date	Nov 18, 2016
Priority date	Nov 19, 2015
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A device for coating one or more yarns by a vapor deposition method, the device including a treatment chamber extending along a longitudinal axis and having a treatment zone between an internal and an external circumferential wall, and within which at least one yarn is to be coated by performing a vapor deposition method; a conveyor system to transport the at least one yarn through the treatment zone; an injector device to inject a treatment gas phase into the treatment zone through an inlet orifice present in the internal or external circumferential wall; and a removal device to remove the residual gas phase from the treatment zone through an outlet orifice present in the internal or external circumferential wall, the inlet and the outlet orifice being situated in a common plane perpendicular to the longitudinal axis of the chamber and being offset around the circumferential direction of the chamber.

First claim

The invention claimed is:

1. A device for coating one or more yarns by a vapor deposition method, the device comprising:
a treatment chamber extending along a longitudinal axis and having at least one treatment zone that is annular in shape situated between an internal circumferential wall and an external circumferential wall, and within which at least one yarn is to be coated by performing a vapor deposition method;
a conveyor system;
an injector device configured to inject a treatment gas phase into the treatment zone through at least one inlet orifice present in the internal or external circumferential wall; and
a removal device configured to remove the residual gas phase from the treatment zone through at least one outlet orifice present in the internal or external circumferential wall, said inlet orifice and said outlet orifice being situated in a common plane perpendicular to the longitudinal axis of the treatment chamber and being offset around a circumferential direction of the treatment chamber, the conveyor system being configured to transport said at least one yarn through the treatment zone along the longitudinal axis, the conveyor system comprising at least a first conveyor element located at a first longitudinal end of the treatment chamber and at least a second conveyor element located at a second longitudinal end of the treatment chamber, the treatment zone being located between the first and second conveyor elements,
wherein the inlet orifice is situated in one of the internal or external circumferential wall, and the outlet orifice is situated in the other of the internal or external circumferential wall.

2. A device according to claim 1 , comprising a plurality of inlet orifices and a plurality of outlet orifices.

3. A device according to claim 2 , wherein the inlet orifices and the outlet orifices are offset so that each of the outlet orifices is positioned between two inlet orifices around the circumferential direction.

4. A device according to claim 2 , said inlet orifices and said outlet orifices being uniformly distributed around the circumferential direction.

5. A device according to claim 1 , wherein the travel speed of said at least one yarn through the treatment chamber is adjustable.

6. A method of treating one or more yarns by a vapor deposition method by using a device, the device including
a treatment chamber extending along a longitudinal axis and having at least one treatment zone that is annular in shape situated between an internal circumferential wall and an external circumferential wall, and within which at least one yarn is to be coated by performing a vapor deposition method;
a conveyor system;
an injector device configured to inject a treatment gas phase into the treatment zone through at least one inlet orifice present in the internal or external circumferential wall; and
a removal device configured to remove the residual gas phase from the treatment zone through at least one outlet orifice present in the internal or external circumferential wall, said inlet orifice and said outlet orifice being situated in a common plane perpendicular to the longitudinal axis of the treatment chamber and being offset around a circumferential direction of the treatment chamber, the conveyor system being configured to transport said at least one yarn through the treatment zone along the longitudinal axis, the conveyor system comprising at least a first conveyor element located at a first longitudinal end of the treatment chamber and at least a second conveyor element located at a second longitudinal end of the treatment chamber, the treatment zone being located between the first and second conveyor elements,
wherein the inlet orifice is situated in one of the internal or external circumferential wall, and the outlet orifice is situated in the other of the internal or external circumferential wall,
the method comprising:
using the injector device to inject the gas phase into the treatment zone through said inlet orifice;
using the conveyor system to cause at least one yarn to be transported through the treatment zone so as to form a layer on said at least one yarn by vapor deposition from the injected gas phase; and
removing the residual gas phase from the treatment zone through said outlet orifice.

7. A method according to claim 6 , wherein said at least one yarn is transported continuously by the conveyor system through the treatment chamber.

8. A method according to claim 6 , wherein the layer is formed by chemical vapor deposition or by reactive chemical vapor deposition.

9. A method according to claim 6 , wherein the layer is an interphase coating layer.

10. A method of fabricating a composite material part, the method comprising:
coating a plurality of yarns with an interphase coating at least by performing a method according to claim 9 ;
forming a fiber preform by performing one or more textile operations on yarns as coated in this way with the interphase coating; and
densifying the fiber preform with a matrix in order to obtain a composite material part.

Assignees

• Safran Ceram

Inventors

• Buet Emilien
• Thibaud Simon
• Delcamp Adrien
• Descamps Cédric

Classifications

• D06M11/58 Primary

  with nitrogen or compounds thereof, e.g. with nitrides (with ammonium halides D06M11/13) · CPC title

• C23C16/545

  for coating elongated substrates · CPC title

• C23C14/562

  for coating elongated substrates · CPC title

• D10B2101/16

  Silicon carbide · CPC title

• C23C16/45502

  Flow conditions in reaction chamber · CPC title