Steel bonded dense silicon nitride compositions and method for their fabrication

Patent · Mon May 20 00:00:00 EDT 1985

OSTI ID:5587189

Landingham, R L; Shell, T E

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/sup 0/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/sup 0/ to 950/sup 0/C in a vacuum. The two-stage bonding technique minimizes the temperature-expansion mismatch between the dissimilar materials.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy
• Application Number: ON: DE86013718
• OSTI ID: 5587189
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
33 ADVANCED PROPULSION SYSTEMS
SILICON NITRIDES
BONDING
CHEMICAL COMPOSITION
DENSITY
ELASTICITY
THERMAL CONDUCTIVITY
THERMAL EXPANSION
STEELS
ALUMINIUM OXIDES
COPPER ALLOYS
CORROSION RESISTANCE
DOPED MATERIALS
EXPERIMENTAL DATA
INTERNAL COMBUSTION ENGINES
LAYERS
NICKEL BASE ALLOYS
SLURRIES
YTTRIUM OXIDES
ALLOYS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
DATA
DISPERSIONS
ENGINES
EXPANSION
FABRICATION
HEAT ENGINES
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MATERIALS
MECHANICAL PROPERTIES
MIXTURES
NICKEL ALLOYS
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SILICON COMPOUNDS
SUSPENSIONS
TENSILE PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360601* - Other Materials- Preparation & Manufacture
360101 - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties
360603 - Materials- Properties
330100 - Internal Combustion Engines