Title:
METHOD FOR PRODUCING MONOCRYSTALLINE METALLIC WIRE
Document Type and Number:
WIPO Patent Application WO/2003/035915
Kind Code:
A1
Abstract:
The invention relates to metallic articles for industrial use, more specifically to a method for producing a thin metallic monocrystalline wire having a diameter ranging from 0.01 to 5.0 mkm. The inventive method consists in carrying out the plastic deformation of a wire having a deformation rate of higher than 98 % by twisting two wires in spiral through time at a pitch angle ranging from 20 to 58° with respect to the longitudinal axis thereof and at a predetermined twisting speed through time during the thermal processing and the cleaning of the thus produced wire from polycrystalline metal residuals. Said method is also characterised in that the shear plastic deformation of the wire at a deformation rate of higher than 98 % is carried out by twisting one wire about the longitudinal axis thereof when the metal is in a yielded state in such a way that filamentary monocrystals are formed. In individual cases, the deformation of metallic wire is carried out at a temperature ranging from (-200°C) to 400 °C. All processing parameters are experimentally defined. The monocrystallinity of the wire is confirmed by X-ray analysis. In cases when the monocrystalline wire with polycrystalline residuals can not be used, the cleaning of a monocrystalline filament is carried out with the aid of a chemical method.
Inventors:
Markov, Gennadij Alexandrovich (Geroev Truda, 23-34 Novosibirsk, 5, 63005, RU)
Application Number:
PCT/RU2002/000461
Publication Date:
May 01, 2003
Filing Date:
October 22, 2002
Export Citation:
Assignee:
Markov, Gennadij Alexandrovich (Geroev Truda, 23-34 Novosibirsk, 5, 63005, RU)
International Classes:
B81C99/00; B21C37/04; C21D8/06; C22F1/00; C22F1/16; C22F1/18; C30B1/00; C30B1/02; C30B1/04; C30B29/66; D07B1/00; (IPC1-7): C21D8/06; C22F1/18; D07B1/06
Attorney, Agent or Firm:
Lavrentieva, Valentina Gennadievna (pr. Academica Lavrentieva, Novosibirsk, 63009, RU)
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