The considered products combine useful niobiumproperties including refractoriness, corrosion stability and low thickness of flat products. This allows using niobium in small electronic devices and taking advantage of this metal even in the “microworld”.
Niobium foil and strip can be purchased on the Prices page on the website of Metotechnics, via e-mail or by phone.
The corresponding sections of this page deal with the grades, production technologies, supply condition, applications of the described products.
Grades
The products are made of pure niobium with Nb weight per cent of 99.38%. Traditionally it includes tantalum (Ta) that serves as the most significant admixture. Its content is 0.5%. Other admixtures include molybdenum (Mo), tungsten (W), titanium (Ti), silicon (Si), iron (Fe) and some gases.
The chemical composition of niobium used for making these products is given in regulatory document TC 48-19-293-78.
Production
Production of niobium strip and foil is a multi-stage technological process that involves deformation of blanks by pressurizing them and their thermal processing. For making the semi-finished products plastic enough and removing the cast structure the ingots made by vacuum-melting of niobium undergo hot pressing. After this hot or upset forging of intermediate blanks for making them thinner is performed. The final operation is cold rolling for reaching the set thickness of the product. After each pressurizing iteration the product is annealed. At the end of the technological process the edges are trimmed.
Niobium foil is supplied in rolls. The thickness of the described products is small - less than 0.1 mm.
The sizes, supply condition and other technological peculiarities of the products are given in standard TC 48-19-293-78.
Application
Niobium foil with small sizes is applied in electronics where components have a small size (e.g., condensers). But tantalum foil is used more frequently for this purpose as this metal allows making condensers with better capacity, fault current, working voltage properties. However, the lower cost of niobium foil is a significant advantage.
Prices
See the Cost page for the sizes and grades of the available products so as the prices for niobium strip and foil.