melt extraction

melt extraction

[′melt ik‚strak·shən]
(metallurgy)
A rapid quenching process in which the molten metal is brought into contact with the periphery of a rotating heat-extracting disk; quench rates exceed 1,000,000 K per second.
References in periodicals archive ?
Drew, "Melt extraction processing of structural [Y.sub.2][O.sub.3]-[Al.sub.2][O.sub.3] fibers," Journal of the European Ceramic Society, vol.
Since in our model melt escapes from the source before a percolation threshold or 'critical melt percentage' (Arzi 1978) has been reached, melt extraction starts at an earlier stage than in conventional models of granite petrogenesis.
The present model can take into account the effects of different rates of melt extraction and accumulation on magma chemistry and may quantitatively contribute to the understanding of the relationship between tectonic environment and granite chemistry in contrast to static models applied previously.
depleted by a previous melt extraction event (low degree [1-2[degrees]/0] partial melts; Hofmann 1988).
a source which underwent previous melt extraction).
Several types of melt extraction feature can be observed in the mantle section of an ophiolite located in Oman.
All of these processes may operate - in different times and places - and it is not yet clear which are dominant in melt extraction from the mantle beneath oceanic spreading ridges.
Gradients in the normal stress field or non-coaxial forces as a simple shear component affect the mobility of melt along melt-rich domains and enhance melt extraction from the rock (Vigneresse & Burg 2000; Bons et al.
Isotopes are used to identify four end-member types of mantle formed by previous melt extraction and recycling of materials (e.g., crust) by subduction (Zindler and Hart, 1986; Hofmann, 2003).
Determinations of trace-element abundances in olivine-hosted meat inclusions--droplets of melt less than 1 millimeter across entrapped in olivine crystals as beads of glass--provided important clues that place the depths of melting and melt extraction at greater than 80 kilometers.