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Steel bonded dense silicon nitride compositions and method for their fabrication

Patent ·
OSTI ID:5587189
;

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 Lab., CA (USA)
DOE Contract Number:
W-7405-ENG-48
Assignee:
Dept. of Energy
Patent Number(s):
None
Application Number:
ON: DE86013718
OSTI ID:
5587189
Country of Publication:
United States
Language:
English

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Related Subjects

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