Refractory alloys.

Niobium is a refractory metal with a high melting point. In: Habashi F (ed) Handbook of extractive metallurgy. hard chrome-plating of all copper tooling) to avoid copper contamination. Niobium-1% zirconium is used in rocketry and in the nuclear industry. C-103, which is 89% Nb, 10% Hf and 1% Ti, was used for the rocket nozzle of the Apollo service module; it is regarded as a medium-strength alloy. Niobium is a sister metal to tantalum.

CopyCopied, Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, Predicted data is generated using the US Environmental Protection Agency’s EPISuite™, Click to predict properties on the Chemicalize site, For medical information relating to Covid-19, please consult the, ACD/Labs Percepta Platform - PhysChem Module, US Environmental Protection Agency’s EPISuite™, Compounds with the same molecular formula, Search Google for structures with same skeleton, DANGER: FLAMMABLE, irritates skin, eyes, lungs, WARNING: CORROSIVE, irritates skin and eyes, WARNING: Dust may irritate eyes and lungs. This service is more advanced with JavaScript available, Linear coefficient of thermal expansion, K–1, Over 10 million scientific documents at your fingertips. This is a preview of subscription content, Eckert J, Starck HC (1997) Niobium and niobium compounds. Niobium-1% zirconium is used in rocketry and in the nuclear industry. Name: Niobium Symbol: Nb Atomic Number: 41 Atomic Mass: 92.90638 amu Melting Point: 2468.0 °C (2741.15 K, 4474.4 °F) Boiling Point: 4927.0 °C (5200.15 K, 8900.6 °F) Number of Protons/Electrons: 41 Number of Neutrons: 52 Classification: Transition Metal Crystal Structure: Cubic Density @ 293 K: 8.57 g/cm 3 Color: white Atomic Structure Since first obtained as a pure metal, the properties of niobium have been attracting the interest of scientists and engineers for several applications involving advanced technologies. High-strength alloys include C-129Y (10% tungsten, 10% hafnium, 0.1% yttrium, balance niobium), Cb-752 (10% tungsten, 2.5% zirconium), and the even higher strength C-3009 (61% niobium, 30% hafnium, 9% tungsten); these can be used at temperatures up to 1650°C with acceptable strength, though are expensive and hard to form. Melting point of Niobium is 2477°C. The metal begins to oxidize in air at 200 °C. © 2020 Springer Nature Switzerland AG.

CopyCopied, CSID:22378, http://www.chemspider.com/Chemical-Structure.22378.html (accessed 12:49, Nov 13, 2020) The materials and processes used to produce niobium-dielectric capacitors are essentially the same as for existing tantalum-dielectric capacitors.

It resists corrosion by fused alkalis and by acids, including aqua regia, hydrochloric, sulfuric, nitric and phosphoric acids. Niobium is attacked by hydrofluoric acidand hydrofluo…

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