METHOD PRODUCING SINGLE CRYSTAL FIBERS MADE OF REFRACTORY MATERIALS Russian patent published in 2016 - IPC C30B15/34 C30B30/00 C30B29/62 

FIELD: metallurgy.

SUBSTANCE: method of producing single crystal fibers of refractory material comprises placing in a vacuum chamber the feeder starting material in the form of rods, feeding the laser radiation on the surface of the starting material and stretching the starting material to form a fiber, wherein when applying laser radiation at the surface of the parent material with a laser beam is scanned in two mutually perpendicular planes with frequencies f₁=f₂, equal to 200÷300 Hz, with amplitude A, equal 1.5-5 B, where B - the largest dimension of the feeder starting material.

EFFECT: technical result of the invention is to reduce the energy loss of the laser light intensity is increased, the laser beam cross-section and the homogeneity of the resulting fiber structure.

1 cl, 1 dwg