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 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: A mooring system used for mooring a floating object, comprising a mooring line configured for extending between said object floating in water and an anchoring device, characterized by that said mooring line is made from polyoxymethylene and the ratio of static stiffness to dynamic stiffness of said mooring line is in a range of 0.8 to 1.

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 deposition wire of the powder-in-tube type comprises a hollow tubular portion of titanium and a core portion filling the tubular portion. The core portion occupies between (30) volume % and (80) volume % of the deposition wire. The core portion comprises compacted elongated powders of titanium and possibly also comprises other compacted powders selected from the group consisting of aluminium, vanadium, aluminium-vanadium, chromium, molybdenum, boron, niobium, tantalum, nickel, zirconium, silicon, copper, tin, iron and palladium. Due to the high volume of the core portion, the process of making the wire is less complex.

Abstract: A superconductor (10, 30) has a twisted structure and is adapted to form windings in a superconducting coil. The superconductor (10, 30) comprises at least one superconductor wire. The superconductor further comprises at least one elongated electrical insulation element (18, 37). The elongated electrical insulation element(s) (18, 37) is/are twisted with or around the superconductor wire(s) in order to create a separation distance with an adjacent superconductor wire in a neighbouring winding, The elongated electrical insulation element(s) (18, 37) and the superconductor wire(s) may be twisted in one and the same twisting operation.

Abstract: A concrete construction (100) made by 3D concrete printing that contains: two or more layers (102, 106) of cementitious material extruded one above the other, and at least one elongated steel element (104, 108) reinforcing at least one of the two or more layers. The elongated steel element (104, 108) is provided with a first crimp. Due to the crimp, a good anchorage in concrete is obtained and the anchorage force is predictable, since the standard deviation of the anchorage force is very small. The elongated steel element can be a single steel wire with a diameter D, the amplitude of the crimp ranges from 1.05×D to 5.0×D. The elongated steel element can also be a steel with steel filaments having a maximum diameter d. The amplitude of the crimp ranges from 1.05×d to 5.0×d.

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: A superconductor (10, 30) has a twisted structure and is adapted to form windings in a superconducting coil. The superconductor (10, 30) comprises at least one superconductor wire. The superconductor further comprises at least one elongated electrical insulation element (18, 37). The elongated electrical insulation element(s) (18, 37) is/are twisted with or around the superconductor wire(s) in order to create a separation distance with an adjacent superconductor wire in a neighbouring winding. The elongated electrical insulation element(s) (18, 37) and the superconductor wire(s) may be twisted in one and the same twisting operation.