Aircraft brake disc materials and methods

Patent metadata

Field	Value
Publication number	US-10323339-B2
Application number	US-201514668463-A
Country	US
Kind code	B2
Filing date	Mar 25, 2015
Priority date	Mar 25, 2015
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

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, wherein infiltrating the carbonized fiber preform comprises introducing, at a first temperature, an infiltration medium into the carbonized fiber preform, wherein the infiltration medium comprises sodium borohydride and titanium tetrachloride in a solution of 1,2-dimethoxyethane;
drying the carbonized fiber preform at a second temperature;
annealing the carbonized fiber preform at a third temperature; and
densifying the carbonized fiber preform.

2. The method of claim 1 , wherein infiltrating the carbonized preform at the first temperature comprises thermally decomposing the infiltration medium in the presence of refluxing mesitylene.

3. The method of claim 2 , wherein the infiltrating comprises:
placing the carbonized fiber preform in a vacuum chamber;
placing the 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 4 , wherein the infiltration medium comprises a nonethereal solution.

8. The method of claim 4 , wherein infiltrating the carbonized preform at the first temperature comprises forming titanium tetrahydroborate (“Ti(BH 4 ) 3 ”) as an intermediate between the infiltration medium and the titanium diboride.

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

Assignees

• Goodrich Corp

Inventors

• Bruno Claudio

Classifications

• H01B1/04

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

• C04B35/62857

  with non-oxide ceramics · CPC title

• C04B35/62886

  by wet chemical techniques · CPC title

• C04B41/5006

  Boron compounds · CPC title

• C04B2235/44

  Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate · CPC title