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Galfenol (5301 views - Material Database)

In materials science, galfenol is the general term for an alloy of iron and gallium. The name was first given to iron-gallium alloys by United States Navy researchers in 1998 when they discovered that adding gallium to iron could amplify iron's magnetostrictive effect up to tenfold. Galfenol is of interest to sonar researchers because magnetostrictor materials are used to detect sound, and amplifying the magnetostrictive effect could lead to better sensitivity of sonar detectors. Galfenol is also proposed for vibrational energy harvesting, actuators for precision machine tools, active anti-vibration systems, and anti-clogging devices for sifting screens and spray nozzles. Galfenol is machinable and can be produced in sheet and wire form. In 2009, scientists from Virginia Polytechnic Institute and State University, and National Institute of Standards and Technology (NIST) used neutron beams to determine the structure of galfenol. They determined that the addition of gallium changes the lattice structure of the iron atoms from regular cubic cells to one in which the faces of some of the cells become slightly rectangular. The elongated cells tend to clump together in the alloy, forming localized clumps within the material. These clumps have been described by Peter Gehring of the NIST Center for Neutron Research as "something like raisins within a cake".
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Galfenol

Galfenol

In materials science, galfenol is the general term for an alloy of iron and gallium. The name was first given to iron-gallium alloys by United States Navy researchers in 1998 when they discovered that adding gallium to iron could amplify iron's magnetostrictive effect up to tenfold. Galfenol is of interest to sonar researchers because magnetostrictor materials are used to detect sound, and amplifying the magnetostrictive effect could lead to better sensitivity of sonar detectors.[1] Galfenol is also proposed for vibrational energy harvesting, actuators for precision machine tools, active anti-vibration systems, and anti-clogging devices for sifting screens and spray nozzles. Galfenol is machinable and can be produced in sheet and wire form.[2][3]

In 2009, scientists from Virginia Polytechnic Institute and State University, and National Institute of Standards and Technology (NIST) used neutron beams to determine the structure of galfenol. They determined that the addition of gallium changes the lattice structure of the iron atoms from regular cubic cells to one in which the faces of some of the cells become slightly rectangular. The elongated cells tend to clump together in the alloy, forming localized clumps within the material. These clumps have been described by Peter Gehring of the NIST Center for Neutron Research as "something like raisins within a cake".[1]

See also


AlGaАльникоАлюминийАлюминиевые сплавыАлюминиевая бронзаAluminium-lithium alloyArsenical bronzeArsenical copperBell metalБериллийBeryllium copperБиллонBirmabrightBismanolВисмутЛатуньБронзаCalamine brassChinese silverХромChromium hydrideКобальтКонстантанМедьГидрид меди(I)Copper–tungstenCorinthian bronzeCunifeМедно-никелевый сплавСплавы для тарелокСплав ДевардаДюралюминийDutch metalЭлектрумFlorentine bronzeГаллийGilding metalСтеклоGlucydurЗолотоGuanín (bronze)GunmetalHepatizonHiduminiumHydronaliumИндийЖелезоItalmaСвинецMagnaliumМагнийМанганинMegalliumМельхиор (сплав)MercuryMolybdochalkosMuntz metalНихромНикельНейзильберСеверное золотоOrmoluPhosphor bronzePinchbeck (alloy)ПластмассыPlexiglasПлутонийКалийРодийСплав РозеСамарийСкандийСякудоСереброНатрийSpeculum metalНержавеющая стальСтальСтеллитКонструкционная стальОловоТитан (элемент)ТомпакТумбагаУран (элемент)VitalliumСплав ВудаY alloyЦинкЦирконийГалинстанЦветное золотоRhoditeCrown goldЭлинварField's metalПлатинитФерросплавыФерроцерийФеррохромФерромарганецФерромолибденФерросилицийФерротитанFerrouraniumИнварЧугунIron–hydrogen alloyПередельный чугунФехральКоварStaballoySpiegeleisenБулат (металл)Crucible steel41xx steelДамасская стальСталь ГадфильдаБыстрорежущая стальMushet steelMaraging steelHigh-strength low-alloy steelReynolds 531Электротехническая стальПружинная стальAL-6XNCelestriumAlloy 20Нержавеющая сталь AISI 316Martensitic stainless steelSanicro 28Surgical stainless steelZeron 100Серебрянка (сталь)Инструментальная стальСталь кортеновскаяWootz steelПрипойTerneType metalЭлектрон (сплав)АмальгамаMagnox (alloy)АлюмельBrightrayХромельHaynes InternationalИнконельМонель-металлNicrosilNisilНитинолМю-металлПермаллойСупермаллойNickel hydridePlutonium–gallium alloyНатрий-калиевый сплавМишметаллЛитийTerfenol-DPseudo palladiumScandium hydrideSamarium–cobalt magnetArgentium sterling silverBritannia silverDoré bullionGoloidPlatinum sterlingShibuichiСтерлинг (сплав)Tibetan silverTitanium Beta CTitanium alloyГидрид титана(II)Gum metalTitanium goldНитрид титанаБаббитБританийПьютерQueen's metalWhite metalUranium hydrideZAMAKZirconium hydrideВодородГелийБор (элемент)АзотКислородФторМетанАнтресольАтом

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