Stock material or miscellaneous articles – Self-sustaining carbon mass or layer with impregnant or...
Patent
1990-05-16
1992-03-10
Lusignan, Michael
Stock material or miscellaneous articles
Self-sustaining carbon mass or layer with impregnant or...
427 531, 427249, 423446, C23C 1626, C23C 1648, B32B 900
Patent
active
050949152
ABSTRACT:
The invention relates to a method for forming a carbon film on a substrate by irradiating a carbon monoxide-containing gas with an emission from a carbon monoxide laser without irradiating the substrate with the laser emission. The carbon film can be diamond, amorphous carbon, or graphite and the carbon film can be C.sup.13 -enriched or pure C.sup.13 by varying the isotope content of the CO gas in the chamber and/or in the laser.
REFERENCES:
patent: 4472456 (1984-09-01), Shah
Hanssen et al., "Diamond Synthesis Using an Oxygen-Acetylene Torch" Materials Letters, vol. 7, No. 7, 8, Dec. 1988, pp. 289-292.
Meyer et al., "Radio-Frequency Plasma Chemical Vapor Deposition Growth of Diamond", J. Vac. Sci. Technol. A, vol. 7, No. 3, May/Jun. 1989, pp. 2325-2327.
Deshpandey et al., "Diamond and Diamondlike Films: Deposition Processes and Properties" J. Vac. Sci. Technol. A, vol. 7, No. 3, May/Jun. 1989, pp. 2294-2302.
Urban et al., "Treanor Pumping of CO Initiated by CO Laser Excitation", Chem. Phys., vol. 130, 1989, pp. 389-399.
Rich et al., "C.sub.2 and CN Formation by Optical Pumping of CO/Ar and CO/N.sub.2 /Ar Mixtures at Room Temperature", Chem. Phys., vol. 44, 1979, pp. 53-64.
Bergman et al., ".sup.13 C Isotope Separation by Laser Excitation of CO", Proc. Intl. Conf. Lasers, 1980, pp. 265-269.
Anex et al., "Transfer and Storage of Vibrational Energy in Liquids: Collisional Up-Pumping of Carbon Monoxide in Liquid Argon", J. Phys. Chem., vol. 90, 1986, pp. 1604-1610.
Treanor et al., "Vibrational Relaxation of Anharmonic Oscillators with Exchange-Dominated Collisions", J. Chem. Phys., vol. 48, No. 4, 1968, p. 1798.
Burke Margaret
Foster Frank H.
Lusignan Michael
The Ohio State University
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