Tape, strip niobium NB-1, NB-2
Pure niobium is ductile and cold can be laminated in a very thin ribbon (to a thickness of 0,01 mm) without intermediate annealing. The limit of his strength from 20 to 800 °C varies little: from 342 to 312 Mn/m2 (34,2 — 31,2 kgf/mm2); as little change elongation: from 19.2% at 20 °C to 20.7%. at 800 °C. Electromechanical properties of niobium, its extraordinary refractoriness (melting point 2468°C), allow to produce such ribbon anodes, cathodes, grids for electronic devices. This metal is the minimum work function of electrons (electron emission Nb of 4.01 EV) in comparison with the application in vacuum technique similar to the refractory elements tungsten and molybdenum. Niobium also has a high transition temperature to a state of superconductivity.
For the manufacture of sheet and strip of niobium ingot is used, which is obtained by means of powder metallurgy. Powder metal is sintered in any necessary to process the form. Produce a stretching of the ingot in the strip by means of extrusion, i.e. the extrusion of the plastic blank through the matrix, the gap flat, then the strip is annealed in a furnace of the vacuum type and is cooled. The temperature of the metal for the manufacture of tape is often more than 1500 °C, the finished product is then cooled to 780−800°C. as a result, the tape thickness ¼ mm with a uniform grain that is rolled to the required parameters.
Sheet and ribbon used in instrumentation, mechanical engineering, defense industry, particularly in aerospace engineering. Since niobium is resistant to the action of hydrochloric, sulfuric, nitric, phosphoric and organic acids in any concentration to a temperature of 150 °C, it produces valves for the chemical and processing industries. At the end of the twentieth century were particularly valuable such as niobium, as the absence of any significant interaction with uranium at temperatures up to 1100 °C, high thermal conductivity, as well as narrow absorption cross section for thermal neutrons and minimal induced radioactivity. This allowed the niobium to take its rightful place in the nuclear power industry along with aluminum, beryllium and zirconium. Most of the niobium sheet manufacture containers for storage of radioactive waste, and sheath of Fuel rods.
Certified supply niobium sheet and tape at a reasonable price. The specification included data on the percentage composition and performance products. We can easily buy in bulk any semi-finished products for large-scale production. We also work with retail buyers. A high level of service, the product compliance with GOST and international quality standards, efficient service are the face of our company.
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