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Title: Steel bonded dense silicon nitride compositions and method for their fabrication

Abstract

A two-stage bonding technique for bonding high density silicon nitride and other ceramic materials to stainless steel and other hard metals, and multilayered ceramic-metal composites prepared by the technique are disclosed. The technique involves initially slurry coating a surface of the ceramic material at about 1500.degree. C. in a vacuum with a refractory material and the stainless steel is then pressure bonded to the metallic coated surface by brazing it with nickel-copper-silver or nickel-copper-manganese alloys at a temperature in the range of about 850.degree. to 950.degree. C. in a vacuum. The two-stage bonding technique minimizes the temperature-expansion mismatch between the dissimilar materials.

Inventors:
 [1];  [2]
  1. Livermore, CA
  2. Tracy, CA
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
866403
Patent Number(s):
US 4703884
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
steel; bonded; dense; silicon; nitride; compositions; method; fabrication; two-stage; bonding; technique; density; ceramic; materials; stainless; hard; metals; multilayered; ceramic-metal; composites; prepared; disclosed; involves; initially; slurry; coating; surface; material; 1500; degree; vacuum; refractory; pressure; metallic; coated; brazing; nickel-copper-silver; nickel-copper-manganese; alloys; temperature; range; 850; 950; minimizes; temperature-expansion; mismatch; dissimilar; metal composites; dissimilar materials; bonding technique; similar material; coated surface; ceramic material; refractory material; silicon nitride; stainless steel; ceramic materials; metal composite; technique involves; metallic coated; nitride compositions; hard metal; two-stage bonding; ceramic-metal composite; ceramic-metal composites; multilayered ceramic-metal; steel bonded; slurry coating; involves initially; hard metals; ceramic mater; similar materials; bonded dense; dense silicon; density silicon; /228/

Citation Formats

Landingham, Richard L, and Shell, Thomas E. Steel bonded dense silicon nitride compositions and method for their fabrication. United States: N. p., 1987. Web.
Landingham, Richard L, & Shell, Thomas E. Steel bonded dense silicon nitride compositions and method for their fabrication. United States.
Landingham, Richard L, and Shell, Thomas E. Thu . "Steel bonded dense silicon nitride compositions and method for their fabrication". United States. https://www.osti.gov/servlets/purl/866403.
@article{osti_866403,
title = {Steel bonded dense silicon nitride compositions and method for their fabrication},
author = {Landingham, Richard L and Shell, Thomas E},
abstractNote = {A two-stage bonding technique for bonding high density silicon nitride and other ceramic materials to stainless steel and other hard metals, and multilayered ceramic-metal composites prepared by the technique are disclosed. The technique involves initially slurry coating a surface of the ceramic material at about 1500.degree. C. in a vacuum with a refractory material and the stainless steel is then pressure bonded to the metallic coated surface by brazing it with nickel-copper-silver or nickel-copper-manganese alloys at a temperature in the range of about 850.degree. to 950.degree. C. in a vacuum. The two-stage bonding technique minimizes the temperature-expansion mismatch between the dissimilar materials.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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