Method of fabricating silicon carbide coatings on graphite surfaces

Patent · Tue Jul 26 00:00:00 EDT 1994

OSTI ID:7166869

Varacalle, Jr, D J; Herman, H; Burchell, T D

The vacuum plasma spray process produces well-bonded, dense, stress-free coatings for a variety of materials on a wide range of substrates. The process is used in many industries to provide for the excellent wear, corrosion resistance, and high temperature behavior of the fabricated coatings. In this application, silicon metal is deposited on graphite. This invention discloses the optimum processing parameters for as-sprayed coating qualities. The method also discloses the effect of thermal cycling on silicon samples in an inert helium atmosphere at about 1,600 C which transforms the coating to silicon carbide. 3 figs.

• DOE Contract Number: AC07-76ID01570
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 5332601; A
• Application Number: PPN: US 7-988598
• OSTI ID: 7166869
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ATMOSPHERES
CARBIDES
CARBON
CARBON COMPOUNDS
COATINGS
CONTROLLED ATMOSPHERES
DEPOSITION
ELEMENTAL MINERALS
ELEMENTS
GRAPHITE
MINERALS
NONMETALS
PLASMA ARC SPRAYING
SILICON CARBIDES
SILICON COMPOUNDS
SPRAY COATING
SPRAYED COATINGS
SURFACE COATING