Abstract: A method for restoring superconductivity of a wire having a core of reacted MgB2 comprises subjecting said wire to a two-phase heat treatment, wherein a first phase comprises heating in a range of 800° C. to 1000° C. during 20 minutes to 40 minutes and a second phase comprises heating in a range of 550° C. to 750° C. during 45 minutes to 75 minutes.

Abstract: A joint of superconducting wires having at least two superconducting wires, each with a sheath and with a core of reacted superconducting MgB2. At least one first superconducting wire has a first flattened end and at least one second superconducting wire has a second flattened end. The joint further has a tubular metal connector having a centre filled with MgB2 material. The first flattened end of the first superconducting wire is inserted at one side of the connector until it is in contact with the MgB2 material, the second flattened end of the second superconducting wire is inserted at the other side of the connector until it is in contact with the MgB2 material, the connector is pressed at both sides to fix the superconducting wires, and the centre of the connector is pressed to compact the MgB2 material.

Abstract: A magnesiumdiboride (MgB2) powder-in-tube (PIT) wire has a cross-section showing —voids, —magnesiumdiboride, and —oxides, as measured by energy-dispersive X-ray spectroscopy. Oxides are located at the borders between the voids and the magnesiumdiboride. The MgB2 PIT wire has a higher degree of superconductivity.

Abstract: There is provided a method of manufacturing a continuous wire comprising forming a strip formed from at least one metallic material into a channel, placing at least one powder into the channel and sealing edges of the channel together to produce a wire, wherein the method further comprises mixing the powder with a carrier liquid to create a slurry and placing the slurry into the channel. The carrier liquid is chemically inert with respect to the at least one powder.

Abstract: There is provided a method of manufacturing a continuous wire comprising forming a strip formed from at least one metallic material into a channel, placing at least one powder into the channel and sealing edges of the channel together to produce a wire, wherein the method further comprises mixing the powder with a carrier liquid to create a slurry and placing the slurry into the channel. The carrier liquid is chemically inert with respect to the at least one powder.