TY - GEN
T1 - Rapid-solidified magnetostrictive polycrystalline strong-textured galfenol (Fe-Ga) alloy and its applications for micro gas-valve
AU - Saito, Chihiro
AU - Tanaka, Masamune
AU - Okazaki, Teiko
AU - Furuya, Yasubumi
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:70449561166
SN - 9781605111018
T3 - Materials Research Society Symposium Proceedings
SP - 169
EP - 174
BT - Materials Research Society Symposium Proceedings - Materials and Devices for Smart Systems III
T2 - Materials and Devices for Smart Systems III - 2008 MRS Fall Meeting
Y2 - 1 December 2008 through 4 December 2008
ER -