Low substrate temperature deposition of diamond coatings derived from glassy carbon
Patent
·
OSTI ID:870081
- Oak Ridge, TN
A process for depositing a diamond coating on a substrate at temperatures less than about 550.degree. C. A powder mixture of glassy carbon and diamond particles is passed through a high velocity oxy-flame apparatus whereupon the powders are heated prior to impingement at high velocity against the substrate. The powder mixture contains between 5 and 50 powder volume percent of the diamond particles, and preferably between 5 and 15 powder volume percent. The particles have a size from about 5 to about 100 micrometers, with the diamond particles being about 5 to about 30 micrometers. The flame of the apparatus provides a velocity of about 350 to about 1000 meters per second, with the result that upon impingement upon the substrate, the glassy carbon is phase transformed to diamond as coaxed by the diamond content of the powder mixture.
- Research Organization:
- LOCKHEED MARTIN ENRGY SYST INC
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5453303
- OSTI ID:
- 870081
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/427/
100
1000
15
30
350
50
550
apparatus
apparatus provides
carbon
coating
coatings
coaxed
contains
content
degree
depositing
deposition
derived
diamond
diamond coating
diamond particles
flame
glassy
glassy carbon
heated
impingement
meters
micrometers
mixture
mixture contains
oxy-flame
particles
passed
percent
phase
powder
powder mixture
powders
preferably
prior
process
provides
rate temperature
result
size
substrate
substrate temperature
temperature
temperature deposition
temperatures
transformed
velocity
volume
volume percent
whereupon
100
1000
15
30
350
50
550
apparatus
apparatus provides
carbon
coating
coatings
coaxed
contains
content
degree
depositing
deposition
derived
diamond
diamond coating
diamond particles
flame
glassy
glassy carbon
heated
impingement
meters
micrometers
mixture
mixture contains
oxy-flame
particles
passed
percent
phase
powder
powder mixture
powders
preferably
prior
process
provides
rate temperature
result
size
substrate
substrate temperature
temperature
temperature deposition
temperatures
transformed
velocity
volume
volume percent
whereupon