Silicon-nitride and metal composite

Patent · Thu Jan 01 04:00:00 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
• 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

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