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・ Misery Me
・ Misery Mountain (Taconic Mountains)
・ Misery Peak
・ Misery River
・ Misery Signals
・ Misery, Somme
・ Misery-Courtion
・ Miseryfjellet
・ Miseryfjellet Formation
・ Miserylab
・ Misfalah
・ Mischliffen
・ Mischling
・ Mischling Test
・ Mischmasch
Mischmetal
・ Mischocarpus
・ Mischocarpus pyriformis
・ Mischocephalus
・ Mischocyttarus
・ Mischocyttarus drewseni
・ Mischocyttarus flavitarsis
・ Mischocyttarus mexicanus
・ Mischocyttarus mexicanus cubicola
・ Mischodon
・ Mischopyga
・ Mischotetrastichus
・ Mischtechnik
・ Miscibility
・ Miscibility gap


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Mischmetal : ウィキペディア英語版
Mischmetal

Mischmetal (from (ドイツ語:Mischmetall) - "mixed metal") is an alloy of rare earth elements. It is also called cerium mischmetal, rare earth mischmetal or misch metal. A typical composition includes approximately 50% cerium and 25% lanthanum, with small amounts of neodymium and praseodymium. Its most common use is in the ferrocerium "flint" ignition device of many lighters and torches, although an alloy of only rare-earth elements would be too soft to give good sparks. For this purpose, it is blended with iron oxide and magnesium oxide to form a harder material known as ferrocerium.
== History ==

Carl Auer von Welsbach was not only the discoverer of neodymium and praseodymium, and co-discoverer of lutetium, but was also the inventor of the light-mantle (using thorium), and of the rare earth industry. After extracting necessary thorium content from monazite sand, a lot of lanthanides were left over, for which there was no commercial use. He began exploration for applications to which the rare earths might be put. Among his first discoveries/inventions to bear practical fruit was Mischmetal.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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