Steel bonded dense silicon nitride compositions and method for their fabrication

Patent · Tue Nov 03 04:00:00 EST 1987

OSTI ID:5800801

Landingham, R L; Shell, T E

A method of fabricating a multilayered ceramic-metal composite is described comprising: (a) polishing a surface of a dense ceramic material to enhance wetting and reaction with molten reactive material; (b) applying a thin slurry coating of a fine powder mixture of a refractory material comprising a mixture of powdered nickel and molybdenum silicide and bonding it to the surface of the ceramic material; (c) grinding the layer of refractory material to uniform thickness; (d) brazing a surface of the layer of refractory material with a metal alloy at elevated temperatures; and (e) pressure bonding a metal piece to the metal alloy to form the composite.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4703884
• OSTI ID: 5800801
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ADHESION
ALLOYS
BRAZING
CERAMICS
CHEMICAL COMPOSITION
COATINGS
COMMINUTION
COMPOSITE MATERIALS
FABRICATION
GRINDING
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MACHINING
MATERIALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM SILICIDES
NICKEL COMPOUNDS
NICKEL SILICIDES
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
POLISHING
POWDERS
REFRACTORIES
REFRACTORY METAL COMPOUNDS
SILICIDES
SILICON COMPOUNDS
SILICON NITRIDES
STEELS
SURFACE FINISHING
TRANSITION ELEMENT COMPOUNDS
WELDING