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Title: Silicon-nitride and metal composite

Abstract

A composite and a method for bonding the composite are described. The composite includes a ceramic portion of silicon nitride, a refractory metal portion and a layer of MoSi/sub 2/ indirectly bonding the composite together. The method includes contacting the layer of MoSi/sub 2/ with a surface of the silicon nitride and with a surface of the metal; heating the layer to a temperature below 1400/sup 0/C; and, simultaneously, compressing the layer such that the contacting is with a pressure of at least 30 MPa. This composite overcomes useful life problems in the fabrication of parts for a helical expander for use in power generation.

Inventors:
;
OSTI Identifier:
5417807
Assignee:
TIC; ERA-05-024427; EDB-80-067020
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 01 COAL, LIGNITE, AND PEAT; HYDROGEN SULFIDES; CORROSIVE EFFECTS; MOLYBDENUM SILICIDES; BONDING; CORROSION RESISTANCE; REFRACTORY METALS; SILICON NITRIDES; SULFURIC ACID; COAL; HEATING; LAYERS; POWER GENERATION; ROTORS; SHAFTS; THERMAL EXPANSION; CARBONACEOUS MATERIALS; CHALCOGENIDES; ELEMENTS; ENERGY SOURCES; EXPANSION; FABRICATION; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; JOINING; MACHINE PARTS; METALS; MOLYBDENUM COMPOUNDS; NITRIDES; NITROGEN COMPOUNDS; PNICTIDES; SILICIDES; SILICON COMPOUNDS; SULFIDES; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication; 360601 - Other Materials- Preparation & Manufacture; 360205 - Ceramics, Cermets, & Refractories- Corrosion & Erosion; 014000 - Coal, Lignite, & Peat- Combustion

Citation Formats

Landingham, R L, and Huffsmith, S A. Silicon-nitride and metal composite. United States: N. p., Web.
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Landingham, R L, & Huffsmith, S A. Silicon-nitride and metal composite. United States.
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Landingham, R L, and Huffsmith, S A. . "Silicon-nitride and metal composite". United States.
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@article{osti_5417807,
title = {Silicon-nitride and metal composite},
author = {Landingham, R L and Huffsmith, S A},
abstractNote = {A composite and a method for bonding the composite are described. The composite includes a ceramic portion of silicon nitride, a refractory metal portion and a layer of MoSi/sub 2/ indirectly bonding the composite together. The method includes contacting the layer of MoSi/sub 2/ with a surface of the silicon nitride and with a surface of the metal; heating the layer to a temperature below 1400/sup 0/C; and, simultaneously, compressing the layer such that the contacting is with a pressure of at least 30 MPa. This composite overcomes useful life problems in the fabrication of parts for a helical expander for use in power generation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}
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