QUASISTATIONARY FORMS OF CRYSTAL GROWTH IN LOCALLY 
NONEQUILIBRIUM DIFFUSION OF IMPURITY
P. K. Galenko and D. A. Danilov

UDC 536.42:548.5

Isoconcentration forms of crystal growth are obtained 
in a quasistationary approximation using a model of locally nonequilibrium 
diffusion in high-speed solidification of a binary system. Four isoconcentration 
forms of growth (an elliptic paraboloid, a paraboloid of revolution, 
a parabolic cylinder, and a parabolic plate) are found for crystals 
that grow along a selected coordinate at a constant velocity. In the 
isothermal case of nondiffusion solidification, i.e., when the velocity 
of crystal growth is equal to or higher than the rate of impurity 
diffusion, these surfaces have an arbitrary configuration.

JEPTER7492020008
JEPTER749208