melt spinning technique (rus. спиннингование) — a method to produce amorphous metal alloys in the form of thin strips by ultra-fast (cooling rate > 106· sec-1) cooling of the melt on the surface of a cold rotating disc or drum.

Description

Amorphous alloys of Fe-Si-B, Fe-Cu-Nb-Si-B and Al-Cr-Ce-M (M = Fe, Co, Ni, Cu) systems serve as a starting material to form nanostructures in them by controlled crystallisation which significantly improves the alloys' mechanical and magnetic properties. Flow turning of the melt occurs when a jet of molten alloy, under excessive gas pressure (the process is conducted in an inert atmosphere) is fed through a hole in the crucible to the surface of a cooled drum rotating at a high speed. The resulting alloy's structure and properties depend on its composition, cooling rate, injection conditions and the difference of temperatures in the crucible and on the drum's surface.

Illustrations



Author

  • Gusev Alexander I.

Sources

  1. Gusev A. I. Nanomaterials, Nanostructures, and Nanotechnologies (in Russian) // Fizmatlit, Moscow (2007) - 416 pp.
  2. Gusev A.I. Rempel A.A. Nanocrystalline Materials. — Cambridge: Cambridge International Science Publishing, 2004. — 351 p.

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