Continuously manufacturing of bulk metallic glass-coated wire composite

Continuously processing is developed for producing a novel bulk metallic glass (BMG)-coated wire composite. The process here yields wire composite coil with the wire diameter of several hundred microns. This paper shows Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 (VIT1) BMG-coated tungsten wire of 200 μm and 250 μm diameter as examples. The thickness of BMG coating is controllable from several to tens of microns. The amorphous structure of BMG coating is proved by using X-ray diffraction and differential scanning calorimeter (DSC) measurement. The interface is studied by using nano-indentation. Results show that the interface bonding between the tungsten wire and VIT1 BMG coating is excellent. The tension property of the wire composite is illustrated as ultimate fracture strength of 2233 MPa and elongation of 1.1%. These data are similar to the mechanical properties of the tungsten wire.