By V I Lakomskii

Within the monograph, the writer summarises the consequences acquired in study and investigations of the gas-liquid steel method at temperatures usual of electrical arc welding and electrometallurgy strategies. designated realization is given to the issues of sorption of diatomic homonuclear gases, specially nitrogen from electrical arc plasma, via steel melts. it's proven that once the steel absorbs the fuel from plasma the approach doesn't succeed in the thermodynamic equilibrium nation. Investigations have been performed into tactics occurring within the gas-plasma layer bordering with the steel. those tactics ensure the fuel content material of liquid metal.

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Extra info for Alloying Liquid Metal with Nitrogen from Electric ARC Plasma

Sample text

Strictly speaking, such an assumption is competent only in the case when the difference of the heat capacities of reaction products and the initial substance equals zero. In the case of gas phase systems, the supposition Dcp = 0 has not been justified theoretically, 101 therefore it is necessary to take into consideration dependences and on temperature according to equations where is the partial heat capacity of the gas Page 17 dissolved in liquid metal; is the heat capacity in the initial state.

Consequently, the partial molar energy of mixing calculating on 1 g·atom of the diatomic gas can be easily determined from the experimental data. From the point of view of the metal degassing process during melting equation (15) is of special interest in so far as it explains the well-known fact in practice: the less the gas remains in metal the more difficult it is to extract it which does not result from the analysis of conventional semiempirical dependences of the type Indeed, as the lowering of the gas concentration in metal proceeds, the gas pressure in the gas phase (that is in equilibrium with it) diminishes.

Strictly speaking, such an assumption is competent only in the case when the difference of the heat capacities of reaction products and the initial substance equals zero. In the case of gas phase systems, the supposition Dcp = 0 has not been justified theoretically, 101 therefore it is necessary to take into consideration dependences and on temperature according to equations where is the partial heat capacity of the gas Page 17 dissolved in liquid metal; is the heat capacity in the initial state.

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