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Introduction to Erbium Nitride and Neodymium Nitride

wallpapers News 2021-04-30
Introduction of Erbium Nitride Powder
Erbium nitride is called ErN powder. ErN is a rare earth nitride, known for its magnetic and optical properties. Nitride powder is mainly used in high-end electronic products, sputtering targets, phosphors, ceramic materials, magnetic materials, semiconductor materials, etc. The growth of Er nitride on non-primary substrates, through physical vapor transport and characterization of tungsten foil. The raw material is metal, which is heated in nitrogen and converted into ERN. Subsequently, it was sublimed to form ERN crystals. The operating conditions in pure nitrogen are 1620-1770°C, 150-330 Torr. The growth rate increases exponentially with temperature, the activation energy is 508 kJ/mol, and the growth rate increases exponentially with pressure.
About neodymium nitride NdN powder
Neodymium nitride is called NDN powder. Lithium nitride NDN lithium battery powder; energy storage materials; catalysts and other high-purity rare earth composite materials, strictly control the content of the same group of rare earth elements, and are widely used in petrochemicals, artificial crystals, functional ceramic devices, magnetic materials, displays and other fields.
How to produce neodymium nitride NdN powder?
1. Dissolve the dehydrated chloride in methanol, and electrolyze it with a graphite anode (D = 12mm) and a mercury cathode. The electrolysis vessel is equipped with a glass joint with multiple ground holes for inserting graphite anode, stirrer, N2 conduit, water jacket and piston at the bottom. A voltage of 40V is used to ensure a current of 1~2A. The magnitude of the current depends on the distance between the anode and the cathode (10~20mm). The concentration of rare earth chloride is half, and the temperature is about 20°C. Due to the large surface area of the cathode used for the electrolysis reaction, the current is 1 a, and the corresponding current density is 004 a/cm2. After 20-40 hours of electrolysis, the amalgam flows into a container composed of two spherical tubes. Wash impurities with methanol in a N 2 atmosphere. Then the unreacted mercury is distilled from the spherical tube 1 to the spherical tube 2, and the connection of the spherical tube is disconnected. The composition of the amalgam in the tube 1 depends on the temperature at which the mercury is distilled (200~300°C).
2. Rare earth metals are in contact with mercury in the glass tube at 300~350°C (20 to 30 times that of rare earth metals). Amalgamation can also purify metals, because rare earth metal oxides are mercury lighter than mercury and float on the surface of the amalgam to form a thick solid amalgam slurry, which can be directly nitrided.