ISSN:
1572-8986
Keywords:
Are discharge
;
molten chromite cathode
;
spectroscopic diagnostics
;
decomposition reaction products
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Technology
Notes:
Abstract The study of an arc discharge in argon has been made with the cathode of the discharge system in the form of molten chromite, FeO·Cr2O3. The partial pressure distributions of the elements Fe and Cr, as well as the temperature distributions, have been determined in the arc by spectroscopic methods. The data obtained were used, in conjunction with a mathematical model, for the determination of the oxygen species distribution in the same medium. The cathode bath surface was measured by means of the two-wavelength method. From a consideration of free energy of reaction values, it is concluded that the presence of elemental Fe and Cr in the cathode bath is mainly related to the migration of Fe+ and Cr+, present in the arc, toward the liquid cathode. The formation of these elements in the molten cathode is very unlikely.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01460451
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