Rapid-solidified magnetostrictive polycrystalline strong-textured galfenol (Fe-Ga) alloy and its applications for micro gas-valve

Chihiro Saito, Masamune Tanaka, Teiko Okazaki, Yasubumi Furuya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The melt-spun, rapid solidified Galfenol (Fe-Gax, (17≤x≤19)) ribbon sample showed a clear angular dependency on magnetostriction and large magnetostriction (180-200ppm) and good ductility, higher strength etc. as compared with conventional bulk sample. This large magnetostriction is caused by non-precipitating of the ordered phases the release of considerable large internal stresses in as-spun ribbon as well as the remained [100] oriented strong textures after annealing. These are worthy for engineering application as a actuator/sensor devices, therefore, we will introduce the micro-valve which was designed as a device for micro gas-flow control. Bimorph-type FeGa/Ni with the opposite value (FeGa(+), Ni(-)) of magnetostriction coefficient. Large displacement of opposite type could be obtained and it degree and hysteresis curve changed depending the volume fraction of the composite actuator structure.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings - Materials and Devices for Smart Systems III
Pages169-174
Number of pages6
Volume1129
Publication statusPublished - 2009 Nov 20
Externally publishedYes
EventMaterials and Devices for Smart Systems III - 2008 MRS Fall Meeting - Boston, MA, United States
Duration: 2008 Dec 12008 Dec 4

Other

OtherMaterials and Devices for Smart Systems III - 2008 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period08/12/108/12/4

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Rapid-solidified magnetostrictive polycrystalline strong-textured galfenol (Fe-Ga) alloy and its applications for micro gas-valve'. Together they form a unique fingerprint.

  • Cite this

    Saito, C., Tanaka, M., Okazaki, T., & Furuya, Y. (2009). Rapid-solidified magnetostrictive polycrystalline strong-textured galfenol (Fe-Ga) alloy and its applications for micro gas-valve. In Materials Research Society Symposium Proceedings - Materials and Devices for Smart Systems III (Vol. 1129, pp. 169-174)