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.
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| - Galfenol (es)
- Galfenol (en)
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| - En ciencia de los materiales, galfenol es el término general para referirse a la aleación de hierro y galio . El nombre fue dado a las aleaciones de hierro y galio por en 1998, cuando descubrieron que al agregar galio al hierro podría amplificar el efecto magnetostrictivo del hierro hasta diez veces. El galfenol es de interés en las investigaciones de sonar, ya que los materiales magnetostrictores se utilizan para detectar el sonido, y la amplificación del efecto magnetostrictivo puede mejorar la sensibilidad de los detectores de sonar. Se propone usar al galfenol en la recolección de energía por vibración, actuadores para herramientas de precisión, sistemas antivibración activos y dispositivos anti-obstrucción para tamizar pantallas y boquillas de aspersión. El galfenol es maquinable y (es)
- 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. (en)
- In metallurgia ed in scienza dei materiali, il galfenol è un termine generale per una lega di ferro e gallio. Il nome è stato dato per la prima volta alle leghe ferro-gallio dai ricercatori della Marina degli Stati Uniti nel 1998, quando hanno scoperto che l'aggiunta di gallio al ferro amplifica l'effetto magnetostrittivo del ferro fino a dieci volte. Le leghe Galfenol sono di interesse per i ricercatori che si occupano di sonar perché i materiali magnetostrittori vengono utilizzati per rilevare il suono e l'amplificazione dell'effetto magnetostrittivo potrebbe portare a una migliore sensibilità dei rilevatori del sonar. Le leghe di Galfenol sono inoltre proposte per la raccolta di energia vibrazionale, attuatori per macchine utensili di precisione, sistemi antivibranti attivi e dispositiv (it)
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| - 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". (en)
- En ciencia de los materiales, galfenol es el término general para referirse a la aleación de hierro y galio . El nombre fue dado a las aleaciones de hierro y galio por en 1998, cuando descubrieron que al agregar galio al hierro podría amplificar el efecto magnetostrictivo del hierro hasta diez veces. El galfenol es de interés en las investigaciones de sonar, ya que los materiales magnetostrictores se utilizan para detectar el sonido, y la amplificación del efecto magnetostrictivo puede mejorar la sensibilidad de los detectores de sonar. Se propone usar al galfenol en la recolección de energía por vibración, actuadores para herramientas de precisión, sistemas antivibración activos y dispositivos anti-obstrucción para tamizar pantallas y boquillas de aspersión. El galfenol es maquinable y se puede producir en forma de hoja y alambre. En 2009, científicos del Instituto Politécnico de Virginia y de la Universidad Estatal, y del Instituto Nacional de Estándares y Tecnología (NIST) utilizaron haces de neutrones para determinar la estructura del galfenol. Determinaron que la adición de galio cambia la estructura reticular de los átomos de hierro de las células cúbicas regulares haciendo que algunas caras de las celdas se vuelvan ligeramente rectangulares. Las células alargadas tienden a agruparse en la aleación, formando grupos localizados dentro del material. Peter Gehring, del NIST Center for Neutron Research, ha descrito estos grupos como "algo así como pasas dentro de un pastel". (es)
- In metallurgia ed in scienza dei materiali, il galfenol è un termine generale per una lega di ferro e gallio. Il nome è stato dato per la prima volta alle leghe ferro-gallio dai ricercatori della Marina degli Stati Uniti nel 1998, quando hanno scoperto che l'aggiunta di gallio al ferro amplifica l'effetto magnetostrittivo del ferro fino a dieci volte. Le leghe Galfenol sono di interesse per i ricercatori che si occupano di sonar perché i materiali magnetostrittori vengono utilizzati per rilevare il suono e l'amplificazione dell'effetto magnetostrittivo potrebbe portare a una migliore sensibilità dei rilevatori del sonar. Le leghe di Galfenol sono inoltre proposte per la raccolta di energia vibrazionale, attuatori per macchine utensili di precisione, sistemi antivibranti attivi e dispositivi anti-intasamento per vagli vaglianti e ugelli spruzzatori. Galfenol è lavorabile a macchina e può essere prodotto in fogli e fili. (it)
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