Plasma spraying method for forming diamond and diamond-like coatings
- Farragut, TN
- Oak Ridge, TN
- Knoxville, TN
A method and composition for the deposition of a thick layer (10) of diamond or diamond-like material. The method includes high temperature processing wherein a selected composition (12) including at least glassy carbon is heated in a direct current plasma arc device to a selected temperature above the softening point, in an inert atmosphere, and is propelled to quickly quenched on a selected substrate (20). The softened or molten composition (18) crystallizes on the substrate (20) to form a thick deposition layer (10) comprising at least a diamond or diamond-like material. The selected composition (12) includes at least glassy carbon as a primary constituent (14) and may include at least one secondary constituent (16). Preferably, the secondary constituents (16) are selected from the group consisting of at least diamond powder, boron carbide (B.sub.4 C) powder and mixtures thereof.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
- Patent Number(s):
- US 5635254
- OSTI ID:
- 870980
- Country of Publication:
- United States
- Language:
- English
The physical and chemical character of graphite
|
journal | March 1963 |
Single-Crystal Diffraction Patterns from Vitreous Carbon
|
journal | October 1974 |
Vitreous carbon — A new form of carbon
|
journal | November 1967 |
Newer Forms of Carbon and their Uses
|
journal | January 1969 |
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Related Subjects
spraying
method
forming
diamond
diamond-like
coatings
composition
deposition
thick
layer
10
material
temperature
processing
selected
12
including
glassy
carbon
heated
direct
current
device
softening
inert
atmosphere
propelled
quickly
quenched
substrate
20
softened
molten
18
crystallizes
form
comprising
primary
constituent
14
secondary
16
preferably
constituents
consisting
powder
boron
carbide
mixtures
thick layer
plasma spray
boron carbide
direct current
inert atmosphere
plasma spraying
glassy carbon
selected temperature
temperature process
selected substrate
diamond-like material
selected composition
diamond powder
spraying method
current plasma
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