High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes) An International Journal

ISSN for PRINT: 1093-3611

For Online Access

Best Paper Award Selection - Editorial Board Site

2004, Volume8

Issue 2

168 pages

DOI: 10.1615/HighTempMatProc.v8.i2

Issue price - $144.00

B. E. Djakov
Institute of Electronics, Bulg. Acad. Sci., 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria

Milan Hrabovsky
Thermal Plasma Department, Institute of Plasma Physics, Za Slovankou 3, 18200, Praha 8, Czech Republic

Vladimir Kopecky
Thermal Plasma Department, Institute of Plasma Physics AS CR, Za Slovankou 3, 18200, Praha 8, Czech Republic

G. R. Jones
Department of Electrical Engineering and Electronics, University of Liverpool, L69 3BX, UK

Plasma jets generated by a d.c. torch in water vapour/argon mixture were monitored by three chromatic photo detectors in wavelength regions 400-800, 550-1200, 750-1800 nm. Deviations from the operating regime were enforced by changing arc current, argon flow rate and position within the jet. It is shown that such deviations are distinguishable as different locations in a HLS chromatic space. Calibration with a standard ribbon lamp shows the feasibility of simultaneous tracking the temperature of plasma heated powder particles. Due to better responsiveness to variations of argon flow, the chromatic parameters may be used for monitoring purposes instead of the arc voltage.

DOI: 10.1615/HighTempMatProc.v8.i2.30 Download article, 185-193 pages

Article price - $35.00

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