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Title: Plasma-assisted conversion of solid hydrocarbon to diamond

Abstract

A process of preparing diamond, e.g., diamond fiber, by subjecting a hydrocarbon material, e.g., a hydrocarbon fiber, to a plasma treatment in a gaseous feedstream for a sufficient period of time to form diamond, e.g., a diamond fiber is disclosed. The method generally further involves pretreating the hydrocarbon material prior to treatment with the plasma by heating within an oxygen-containing atmosphere at temperatures sufficient to increase crosslinking within said hydrocarbon material, but at temperatures insufficient to melt or decompose said hydrocarbon material, followed by heating at temperatures sufficient to promote outgassing of said crosslinked hydrocarbon material, but at temperatures insufficient to convert said hydrocarbon material to carbon.

Inventors:
 [1];  [2];  [2];  [1];  [3]
  1. (Santa Fe, NM)
  2. (Los Alamos, NM)
  3. (Wilmington, DE)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
870619
Patent Number(s):
5560897
Assignee:
Regents of University of California Office of Technology Transfer (Alameda, CA) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
plasma-assisted; conversion; solid; hydrocarbon; diamond; process; preparing; fiber; subjecting; material; plasma; treatment; gaseous; feedstream; sufficient; period; time; form; disclosed; method; involves; pretreating; prior; heating; oxygen-containing; atmosphere; temperatures; increase; crosslinking; insufficient; melt; decompose; followed; promote; outgassing; crosslinked; convert; carbon; material prior; hydrocarbon material; carbon fiber; carbon material; gaseous feed; sufficient period; plasma treatment; oxygen-containing atmosphere; solid hydrocarbon; temperatures sufficient; diamond fiber; containing atmosphere; preparing diamond; /423/

Citation Formats

Valone, Steven M., Pattillo, Stevan G., Trkula, Mitchell, Coates, Don M., and Shah, S. Ismat. Plasma-assisted conversion of solid hydrocarbon to diamond. United States: N. p., 1996. Web.
Valone, Steven M., Pattillo, Stevan G., Trkula, Mitchell, Coates, Don M., & Shah, S. Ismat. Plasma-assisted conversion of solid hydrocarbon to diamond. United States.
Valone, Steven M., Pattillo, Stevan G., Trkula, Mitchell, Coates, Don M., and Shah, S. Ismat. Mon . "Plasma-assisted conversion of solid hydrocarbon to diamond". United States. https://www.osti.gov/servlets/purl/870619.
@article{osti_870619,
title = {Plasma-assisted conversion of solid hydrocarbon to diamond},
author = {Valone, Steven M. and Pattillo, Stevan G. and Trkula, Mitchell and Coates, Don M. and Shah, S. Ismat},
abstractNote = {A process of preparing diamond, e.g., diamond fiber, by subjecting a hydrocarbon material, e.g., a hydrocarbon fiber, to a plasma treatment in a gaseous feedstream for a sufficient period of time to form diamond, e.g., a diamond fiber is disclosed. The method generally further involves pretreating the hydrocarbon material prior to treatment with the plasma by heating within an oxygen-containing atmosphere at temperatures sufficient to increase crosslinking within said hydrocarbon material, but at temperatures insufficient to melt or decompose said hydrocarbon material, followed by heating at temperatures sufficient to promote outgassing of said crosslinked hydrocarbon material, but at temperatures insufficient to convert said hydrocarbon material to carbon.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {1}
}

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