Inhoudsopgave
What is neodymium?
Neodymium is a chemical element with symbol Nd and atomic number 60. It is a soft silvery metal that tarnishes in air. Neodymium was discovered in 1885 by the Austrian chemist Carl Auer von Welsbach. It is present in significant quantities in the ore minerals monazite and bastnäsite.
What are neodymium magnets made of?
Neodymium magnets are composed of neodymium, boron, iron and a few transition metals. These magnets are referred to as NdFeB or Neo magnets. The composition of the magnet can be varied as per the requirement of the strength and what that magnet is being used for.
Will neodymium be the main object of geopolitical competition?
Because of its role in permanent magnets used for direct-drive wind turbines, it has been argued that neodymium will be one of the main objects of geopolitical competition in a world running on renewable energy.
Where does neodymium glass come from?
Current sources include glassmakers in the Czech Republic, the United States, and China. The sharp absorption bands of neodymium cause the glass color to change under different lighting conditions, being reddish-purple under daylight or yellow incandescent light, but blue under white fluorescent lighting, or greenish under trichromatic lighting.
How many stable isotopes does neodymium have?
Naturally-occurring neodymium has seven stable isotopes. Fourteen other radioactive isotopes are known. Ion-exchange or solvent extraction techniques are two methods used to obtain neodymium from its salts. The element can also be obtained by reducing anhydrous halides such as NdF 3 with a calcium metal.
Does neodymium oxidize in air?
Neodymium is one of the more reactive lanthanide rare-earth metals and quickly oxidizes in air. The element should be kept under an oil or sealed tightly in a plastic material. The metal has a bright and silvery luster.
What are neodymium ion Borade magnets?
An alloy of neodymium, iron and boron discovered in the 1980s is ferromagnetic, yielding permanent magnets over 1000 times stronger than anything ever seen before. Neodymium ion borade magnets have not only found their way into almost billions of electric motors and electronic devices around the world but also into wonderful toys for children.