Silicon-nitride and metal composite

Patent ·

OSTI ID:5417807

Landingham, R L; Huffsmith, S A

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.

• DOE Contract Number: W-7405-ENG-48
• Assignee: TIC; ERA-05-024427; EDB-80-067020
• Patent Number(s): None
• OSTI ID: 5417807
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
360601 -- Other Materials-- Preparation & Manufacture
BONDING
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
CORROSION RESISTANCE
CORROSIVE EFFECTS
ELEMENTS
ENERGY SOURCES
EXPANSION
FABRICATION
FOSSIL FUELS
FUELS
HEATING
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INORGANIC ACIDS
JOINING
LAYERS
MACHINE PARTS
METALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM SILICIDES
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
POWER GENERATION
REFRACTORY METALS
ROTORS
SHAFTS
SILICIDES
SILICON COMPOUNDS
SILICON NITRIDES
SULFIDES
SULFUR COMPOUNDS
SULFURIC ACID
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS