Applications in Electronic Engineering
Superconducting technology is used to make various instruments, which are characterized by high sensitivity, low noise, quick reaction and small loss, etc. For example, superconducting quantum interferometer can be used to determine the location and reserves of geothermal, petroleum and various mineral deposits, and can be used for earthquake prediction.
Applications in Biomedical
Superconducting magnet for important application in medicine is nuclear magnetic resonance (NMR) imaging technology, distinguish the early tumor cancer cells, etc., can also do electrocardiogram (ecg), magnetoencephalography does, lung magnetic figure, research qigong principle: the basic principle of nuclear magnetic resonance (NMR) is put in special field, the human body with rf pulse excitation hydrogen nuclei in the human body, cause hydrogen nuclear resonance, and absorb energy. After stopping the rf pulse, the hydrogen nuclei emit radio signals at a specific frequency and release the absorbed energy, which is collected by external receptors and processed electronically to obtain images, called MAGNETIC resonance imaging.
Application in Military
Superconducting technology has a very wide application prospect in the military. With the increasing maturity of superconducting technology, the design of navy submarine will have a fundamental change one day, and there will be more advanced superconducting submarine than today’s submarine. They may be half the size of today’s submarines, but they will be equipped with twice as many; Speed will be improved. The noise is greatly reduced and the superconductor does not lose power during transmission. At the same time, after solving the practical application problems of superconducting technology, some submarines will adopt electric propulsion system, and conventional submarines will probably adopt closed cycle steam engine power, thus ending the era of conventional submarine underwater navigation relying solely on battery power. At present, the French Navy is developing a full-power submarine, which is an electric vessel with strong stealth performance, high efficiency and energy saving.
Applications in Power Systems
Liquid nitrogen HTS materials can be realized more easily due to their relatively high temperature requirements, and their promotion is obvious for power applications. Superconducting materials are more dependent on liquid helium environment under high magnetic field. At present, the pulse refrigerant has made a great breakthrough. In the past, it required a temperature of 30K-50K, but now it only needs about 42K and can be sold as a commodity. In the future, superconducting magnets can be applied to generators and motors to better meet the increasing demand for electricity. At present, the power of a single generator can reach 1 million kW, and it needs to be increased to more by the beginning of the 21st century. The output capacity of generator is proportional to the product of magnetic induction intensity and armature current density. By replacing the electromagnet with a superconducting magnet, the magnetic induction strength and current density can be increased by many times respectively.
Applications in Science, Engineering and Laboratory
Fusion device is people dream for a long time is an important direction to solve the problem of energy, its approach is to heat the deuterium and tritium, make become a state of the plasma of the electrons of the atoms and dispersion, and in the high temperature plasma constraint in the appropriate space conditions, the nucleus can collision with each other over the electronic reject nuclear fusion. In these applications, superconducting magnets are essential components of high energy accelerators and nuclear fusion devices.
Science engineering and laboratory is an important aspect of superconducting technology application, including high energy accelerator, nuclear fusion device and so on. High energy accelerators are used to accelerate particles to produce artificial nuclear reactions to study the internal structure of matter, which is the main equipment of elementary particle physics.
Applications in Agriculture
Crop seeds because of its rich in protein and enzyme, under the influence of strong magnetic field, can affect the seed germination, seedling growth, crop yield and quality and genetic characteristics in general, the intensity of magnetic field and magnetic field effect time has a great impact on crops seeds, its mechanism of action are: magnetic field to genes and enzymes, metabolic function and structure. Experimental studies have shown that the final yield of crop seeds subjected to strong magnetic fields can be increased by 5-10%.
Niobium-titanium alloys (NbTi)
Niobium-titanium alloys (NbTi) became the superconductors of choice in the early 1960s, providing a viable alternative to the A-15 compounds and less ductile alloys of niobium-zirconium. This can be attributed to the relative ease of fabrication, better electrical properties, and greater compatibility with copper stabilizing materials.
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