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Title: Method for joining carbon-carbon composites to metals

A method for joining carbon-carbon composites to metals by brazing. Conventional brazing of recently developed carbon-bonded carbon fiber (CBCF) material to a metal substrate is limited by the tendency of the braze alloy to "wick" into the CBCF composite rather than to form a strong bond. The surface of the CBCF composite that is to be bonded is first sealed with a fairly dense carbonaceous layer achieved by any of several methods. The sealed surface is then brazed to the metal substrate by vacuum brazing with a Ti-Cu-Be alloy.
Inventors:
 [1];  [2];  [2]
  1. (Oak Ridge, TN)
  2. (Knoxville, TN)
Issue Date:
OSTI Identifier:
871049
Assignee:
Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5648180
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
method; joining; carbon-carbon; composites; metals; brazing; conventional; recently; developed; carbon-bonded; carbon; fiber; cbcf; material; metal; substrate; limited; tendency; braze; alloy; wick; composite; form; strong; bond; surface; bonded; sealed; fairly; dense; carbonaceous; layer; achieved; methods; brazed; vacuum; ti-cu-be; strong bond; braze alloy; carbon-carbon composites; metal substrate; carbon fiber; carbon composite; carbon-bonded carbon; bonded carbon; cbcf composite; carbon composites; carbon-carbon composite; joining carbon-carbon; /428/228/

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