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Title: Braze material for joining ceramic to metal and ceramic to ceramic surfaces and joined ceramic to metal and ceramic to ceramic article

Abstract

An improved active metal braze filler material is provided in which the coefficient of thermal expansion of the braze filler is more closely matched with that of the ceramic and metal, or two ceramics, to provide ceramic to metal, or ceramic to ceramic, sealed joints and articles which can withstand both high temperatures and repeated thermal cycling without failing. The braze filler material comprises a mixture of a material, preferably in the form of a powder, selected from the group consisting of molybdenum, tungsten, silicon carbide and mixtures thereof, and an active metal filler material selected from the group consisting of alloys or mixtures of nickel and titanium, alloys or mixtures of nickel and zirconium, alloys or mixtures of nickel, titanium, and copper, alloys or mixtures of nickel, titanium, and zirconium, alloys or mixtures of niobium and nickel, alloys or mixtures of niobium and zirconium, alloys or mixtures of niobium and titanium, alloys or mixtures of niobium, titanium, and nickel, alloys or mixtures of niobium, zirconium, and nickel, and alloys or mixtures of niobium, titanium, zirconium, and nickel. The powder component is selected such that its coefficient of thermal expansion will effect the overall coefficient of thermal expansion of themore » braze material so that it more closely matches the coefficients of thermal expansion of the ceramic and metal parts to be joined.« less

Inventors:
 [1];  [2]
  1. Ann Arbor, MI
  2. Farmington Hills, MI
Publication Date:
Research Org.:
Ford Motor Co
OSTI Identifier:
867804
Patent Number(s):
US 5013612
Assignee:
Ford Motor Company (Dearborn, MI)
DOE Contract Number:  
AC02-83CE40651
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
braze; material; joining; ceramic; metal; surfaces; joined; article; improved; active; filler; provided; coefficient; thermal; expansion; closely; matched; ceramics; provide; sealed; joints; articles; withstand; temperatures; repeated; cycling; failing; comprises; mixture; preferably; form; powder; selected; consisting; molybdenum; tungsten; silicon; carbide; mixtures; alloys; nickel; titanium; zirconium; copper; niobium; component; effect; overall; matches; coefficients; closely matches; filler material; ceramic article; braze material; active metal; thermal cycling; thermal expansion; silicon carbide; material comprises; material selected; repeated thermal; joining ceramic; sealed joint; braze filler; ceramic surface; metal braze; ceramic surfaces; improved active; closely match; joined ceramic; /428/

Citation Formats

Hunt, Thomas K, and Novak, Robert F. Braze material for joining ceramic to metal and ceramic to ceramic surfaces and joined ceramic to metal and ceramic to ceramic article. United States: N. p., 1991. Web.
Hunt, Thomas K, & Novak, Robert F. Braze material for joining ceramic to metal and ceramic to ceramic surfaces and joined ceramic to metal and ceramic to ceramic article. United States.
Hunt, Thomas K, and Novak, Robert F. Tue . "Braze material for joining ceramic to metal and ceramic to ceramic surfaces and joined ceramic to metal and ceramic to ceramic article". United States. https://www.osti.gov/servlets/purl/867804.
@article{osti_867804,
title = {Braze material for joining ceramic to metal and ceramic to ceramic surfaces and joined ceramic to metal and ceramic to ceramic article},
author = {Hunt, Thomas K and Novak, Robert F},
abstractNote = {An improved active metal braze filler material is provided in which the coefficient of thermal expansion of the braze filler is more closely matched with that of the ceramic and metal, or two ceramics, to provide ceramic to metal, or ceramic to ceramic, sealed joints and articles which can withstand both high temperatures and repeated thermal cycling without failing. The braze filler material comprises a mixture of a material, preferably in the form of a powder, selected from the group consisting of molybdenum, tungsten, silicon carbide and mixtures thereof, and an active metal filler material selected from the group consisting of alloys or mixtures of nickel and titanium, alloys or mixtures of nickel and zirconium, alloys or mixtures of nickel, titanium, and copper, alloys or mixtures of nickel, titanium, and zirconium, alloys or mixtures of niobium and nickel, alloys or mixtures of niobium and zirconium, alloys or mixtures of niobium and titanium, alloys or mixtures of niobium, titanium, and nickel, alloys or mixtures of niobium, zirconium, and nickel, and alloys or mixtures of niobium, titanium, zirconium, and nickel. The powder component is selected such that its coefficient of thermal expansion will effect the overall coefficient of thermal expansion of the braze material so that it more closely matches the coefficients of thermal expansion of the ceramic and metal parts to be joined.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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