levitation melting

levitation melting

[‚lev·ə′tā·shən ¦mel·tiŋ]
(metallurgy)
Melting metal out of contact with a supporting material by using the induced current provided by a high-frequency surrounding magnetic field to suspend the melt.
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References in periodicals archive ?
Flow-levitation (FL) method is based on the levitation melting technology [13] and has been used as a successful method for the preparation of some metals 14-16] and zinc oxide nanoparticles [17].
Investigations of thermodynamic and kinetic parameters of the process of nitrogen absorption by highly reactive metals in conventional oscillation state (method of levitation melting) have been carried out [1, 2].
Nitrogen absorption by highly reactive metals (niobium, vanadium, zirconium) in arc and plasma melting at temperature and partial pressure values of nitrogen, used in case of levitation melting [1], has been investigated in order to be able to compare the results.
It is necessary to pay attention at the fact that rate of nitrogen absorption in arc melting is higher than in levitation melting, but lower than in plasma heating (see Figure 3).
In levitation melting rate of nitrogen absorption by niobium is described by equation of second order, while in arc and plasma melting--by equation of first order.