Plasma spraying method for forming diamond and diamond-like coatings
Abstract
A method and composition is disclosed for the deposition of a thick layer of diamond or diamond-like material. The method includes high temperature processing wherein a selected composition 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. The softened or molten composition crystallizes on the substrate to form a thick deposition layer comprising at least a diamond or diamond-like material. The selected composition includes at least glassy carbon as a primary constituent and may include at least one secondary constituent. Preferably, the secondary constituents are selected from the group consisting of at least diamond powder, boron carbide (B{sub 4}C) powder and mixtures thereof. 9 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 489101
- Patent Number(s):
- 5635254
- Application Number:
- PAN: 8-361,997
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 3 Jun 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; DIAMONDS; PLASMA ARC SPRAYING; CHEMICAL COMPOSITION; CRYSTALLIZATION; COATINGS
Citation Formats
Holcombe, C E, Seals, R D, and Price, R E. Plasma spraying method for forming diamond and diamond-like coatings. United States: N. p., 1997.
Web.
Holcombe, C E, Seals, R D, & Price, R E. Plasma spraying method for forming diamond and diamond-like coatings. United States.
Holcombe, C E, Seals, R D, and Price, R E. Tue .
"Plasma spraying method for forming diamond and diamond-like coatings". United States.
@article{osti_489101,
title = {Plasma spraying method for forming diamond and diamond-like coatings},
author = {Holcombe, C E and Seals, R D and Price, R E},
abstractNote = {A method and composition is disclosed for the deposition of a thick layer of diamond or diamond-like material. The method includes high temperature processing wherein a selected composition 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. The softened or molten composition crystallizes on the substrate to form a thick deposition layer comprising at least a diamond or diamond-like material. The selected composition includes at least glassy carbon as a primary constituent and may include at least one secondary constituent. Preferably, the secondary constituents are selected from the group consisting of at least diamond powder, boron carbide (B{sub 4}C) powder and mixtures thereof. 9 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {6}
}