Rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table (cerium [Ce] throug
(1802) by the Swedish chemistAnders Gustaf Ekebergand named after the mythological characterTantalusbecause of the tantalizing problem of dissolving theoxidein acids. Due to the great chemical similarity of niobium and tantalum, the establishment of the individual identities of the two elements was ...
Uses of rare earth elements: This chart shows the use of rare earth elements in the United States during 2021. Many vehicles use rare earth catalysts in their exhaust systems for air pollution control. A large number of alloys are made more durable by the addition of rare earth metals. ...
Disclosed herein is selected from cerium (Ce), praseodymium (Pr), promethium (Pm), europium (Eu), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm) rare earth elements, ytterbium (Yb), scandium (Sc), yttrium (Y), lanthanum (La), neodymium (Nd), samarium (...
rare earth elements 释义 稀土元素 实用场景例句 全部 The Catalytic mechanism ofrare earth elementsis also discussed. 讨论了稀土元素的催渗机理. 互联网 Some typical cast ferroalloys and nonferroalloys containingrare earth elementswere described.
USES OF RARE EARTH ELEMENTS FOR SLIMMINGDisclosed is a use of rare earth element selected from the group consisting of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), ...
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Medical Definition rare earth element noun : any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium called also rare earth metal ...
Rare earths include a list of 17 chemical elements that, over the past decades, have become increasingly sought-after due to their use in many advanced technologies. The end uses of rare earths include the production of magnets, batteries, catalysts, displays, and more. Many industries are high...