Melt infiltration apparatus and method for molten metal control

Patent metadata

Field	Value
Publication number	US-9884789-B2
Application number	US-201715401501-A
Country	US
Kind code	B2
Filing date	Jan 9, 2017
Priority date	Mar 15, 2013
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

A method and apparatus for providing molten metal infiltration into a component is provided.

First claim

What is claimed is:

1. A method of infiltrating a material into a component, the method comprising:
providing an infiltrant source having an infiltrant contained therein;
providing a component in fluid communication with the infiltrant source;
heating the infiltrant source, the infiltrant, the component and a barrier disposed between the infiltrant source and the component, the barrier having a higher melting point than the infiltrant;
dissolving the barrier; and
infusing the infiltrant into the component.

2. The method of claim 1 , wherein the barrier comprises a material selected from the group consisting of Si, Si/Zr alloy, SiC-coated Si, Zr/Si alloy, ZrB 2 and Ti.

3. The method of claim 1 , wherein the infiltrant comprises a material selected from the group consisting of Si, Si/C/B alloy, Zr/Si alloy, Zr and Ti/6Al/4V alloy.

4. The method of claim 1 , wherein the component comprises a porous body.

5. The method of claim 4 , wherein the component comprises a ceramic matrix composite.

6. The method of claim 1 further comprising dissolving a plurality of barriers disposed between the infiltrant source and the component, wherein each barrier has a higher melting point than the infiltrant.

7. The method of claim 1 , wherein the infiltrant source comprises a crucible having a drain for discharge of the infiltrant.

8. The method of claim 7 , wherein the barrier is received within the drain of the crucible.

9. The method of claim 1 , wherein the infiltrant source and the component are disposed adjacent to each other on a base plate.

10. The method of claim 1 , wherein a wick connects the infiltrant to the component.

11. The method of claim 10 , wherein the wick comprises carbon.

12. The method of claim 10 , wherein the wick comprises multiple branches in contact with the component.

13. The method of claim 12 , wherein the infiltrant is directed into the component at different times and temperatures through the multiple branches.

14. The method of claim 1 , wherein the barrier contacts a wick.

15. The method of claim 1 , wherein the barrier is applied to the component.

16. The method of claim 15 , wherein the barrier is applied to a bottom of the component.

17. The method of claim 15 , wherein the barrier is applied to a top of the component.

18. The method of claim 17 , wherein the infiltrant source is disposed on the component.

19. The method of claim 18 , wherein the barrier is in contact with a wick disposed on the component, the barrier being between the infiltrant source and the wick.

20. The method of claim 1 , wherein the heating is carried out at a temperature between about 1400° C. and 1500° C.

Assignees

• Rolls Royce Nam Tech Inc

Inventors

• Lazur Andrew J

Classifications

• C04B2235/5248

  Carbon, e.g. graphite · CPC title

• C04B41/85

  with inorganic materials · CPC title

• B22F2999/00

  Aspects linked to processes or compositions used in powder metallurgy · CPC title

• C04B2235/616

  Liquid infiltration of green bodies or pre-forms · CPC title

• C04B41/009

  characterised by the material treated · CPC title