Aircraft brake disc materials and methods

Patent metadata

Field	Value
Publication number	US-2016281268-A1
Application number	US-201514668463-A
Country	US
Kind code	A1
Filing date	Mar 25, 2015
Priority date	Mar 25, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

The present disclosure provides methods related to infiltration of aircraft brake discs with titanium-containing compounds. In various embodiments, a method of making a self-coating carbon/carbon composite member may comprise infiltrating a carbonized fiber preform with a titanium-containing compound, drying the carbonized fiber preform, annealing the carbonized fiber preform at a third temperature, and densifying the carbonized fiber preform.

First claim

What is claimed is:

1 . A method of making a self-coating carbon/carbon composite member, comprising:
infiltrating a carbonized fiber preform with a titanium-containing compound; drying the carbonized fiber preform; annealing the carbonized fiber preform at a third temperature; and densifying the carbonized fiber preform.

2 . The method of claim 1 , wherein the third temperature is about 900° C. to 1100° C.

3 . The method of claim 2 , wherein the infiltrating comprises:
placing the carbonized fiber preform in a vacuum chamber; placing a titanium-containing infiltration medium in the vacuum chamber; drawing a vacuum in the vacuum chamber; maintaining a vacuum pressure for a duration of time; and releasing the vacuum pressure from the vacuum chamber.

4 . The method of claim 3 , wherein the titanium-containing compound comprises titanium diboride.

5 . The method of claim 3 , wherein the titanium-containing compound comprises titanium dioxide.

6 . The method of claim 3 , wherein the infiltrating further comprises:
repeating the drawing the vacuum, the maintaining the vacuum pressure for the duration of time, and the releasing the vacuum pressure.

7 . The method of claim 3 , wherein the infiltrating, the annealing, and the drying occur subsequent to the densifying.

8 . The method of claim 4 , wherein the titanium-containing infiltration medium comprises a nonethereal solution.

9 . The method of claim 4 , wherein the titanium-containing infiltration medium comprises at least one of an aqueous solution or alcohol solution.

10 . The method of claim 5 , wherein the titanium-containing infiltration medium comprises at least one of an aqueous solution or alcohol solution.

11 . A self-coating carbon/carbon composite member, comprising:
a carbonized fiber preform densified with a carbon matrix; and a titanium-containing compound deposited within the carbon/carbon composite member.

12 . The self-coating carbon/carbon composite member of claim 11 ,
wherein the titanium-containing compound comprises titanium diboride; and wherein a protective layer of diboron trioxide is formed in response to oxidation of the titanium diboride at a fourth temperature.

13 . The self-coating carbon/carbon composite member of claim 11 ,
wherein the titanium-containing compound comprises titanium diboride; and wherein a protective layer of titanium dioxide is formed in response to oxidation of the titanium diboride.

14 . The self-coating carbon/carbon composite member of claim 12 , wherein the fourth temperature is about 1000° C.

15 . The self-coating carbon/carbon composite member of claim 14 , wherein the diboron trioxide protective layer is configured to prevent further oxidation of the carbon/carbon composite member.

Assignees

• Goodrich Corp

Inventors

• Bruno Claudio

Classifications

• D01F9/12 Primary

  Carbon filaments; Apparatus specially adapted for the manufacture thereof · CPC title

• C04B41/87 Primary

  Ceramics · CPC title

• H01B1/04

  mainly consisting of carbon-silicon compounds, carbon or silicon · CPC title

• C04B41/507

  Borides · CPC title

• C04B2235/3813

  Refractory metal borides · CPC title