Casting of metallic filament and fiber

Abstract

The production of metallic fiber and filament directly from the melt has been practiced for some years. However, the application of these techniques has been limited due to materials-compatibility problems. Two new fiber-casting methods have been developed: Crucible Melt Extraction and Pendant Drop Melt Extraction. Both methods involve bringing the edge of a rotating disk into contact with a source of molten metal. Molten metal solidifies on the periphery of the disk, adheres there for a short time as it is removed from the melt source, and is then spontaneously released from the disk in the form of solid fiber. Both methods significantly reduce the technical difficulties heretofore associated with fiber casting and are amenable to operation in air, inert atmosphere, or vacuum. Metals as diverse as tin and niobium have been fiberized successfully.

Fabrication and Characterization of Melt-Extracted Co-Based Amorphous Wires

“…The concept of melt extraction was first introduced by Maringer [6] in 1974 to produce metallic fibers. The basic principle is to use a high-speed wheel with a sharp edge to contact the molten alloy surface and then to rapidly extract and cool a molten layer to be wires.…”

The fracture energy of metal fibre reinforced ceramic composites (MFCs)

“…While the model should be applicable to a range of such composites, the fracture energy predictions are oriented towards a commercially-available product (''Fiberstone TM ''), and require characterisation of the tensile and pull-out behaviour of the individual fibres used in this system. The fibres employed were all of 304 stainless steel, supplied by Fibrestone Products Ltd. and produced at their Pinxton plant, using the melt extraction process [46]. This involves solidification of the fibres onto surface protrusions on a water-cooled, rapidly rotating copper drum, which is in contact with a steel melt.…”

Production of amorphous bulk material of an Nd15Fe77B8 magnetic alloy by the compression shearing method

“…Rapid solidification processing (RSP) techniques, such as melt-spinning and gas atomization, produce amorphous materials in splat, ribbon, or powder form [1][2][3][4][5]. The maximum thickness of the amorphous materials is typically less than a few hundredths of a millimeter so as to accomplish a high solidification rate.…”