Silicon-nitride and metal composite

Patent · Thu Jan 01 00:00:00 EST 1981

OSTI ID:864025

Landingham, Richard L ^[1]; Huffsmith, Sarah A ^[2]

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1. Livermore, CA
2. Urbana, IL

A composite and a method for bonding the composite. 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.degree. C.; and, simultaneously with the heating, 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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4293619
• OSTI ID: 864025
• Country of Publication: United States
• Language: English

Related Subjects

silicon-nitride
metal
composite
method
bonding
ceramic
portion
silicon
nitride
refractory
layer
mosi
indirectly
contacting
surface
heating
temperature
below
1400
degree
simultaneously
compressing
pressure
30
mpa
overcomes
useful
life
fabrication
helical
expander
power
generation
useful life
ceramic portion
temperature below
refractory metal
silicon nitride
power generation
metal composite
metal portion
/428/257/416/419/