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Title: Metal-bonded Co-ferrite composites for magnetorestrictive torque sensor applications

Abstract

A new class of magnetomechanical sensor materials, co-ferrite (CoO {center{underscore}dot} Fe{sub 2}O{sub 3}) and metal-bonded (Ag, Ni, Co) Co-ferrite composites, has been investigated. These materials exhibited magnetostriction in excess of 200 ppm and high d{sub 33} ({partial{underscore}derivative}{lambda}/{partial{underscore}derivative}H){sub {sigma}} coefficient, 1.3 x 10{sup {minus}9} A{sup {minus}1}m, at low applied field (<100 kA/m). Selected compositions were formed into test samples in the form of rings brazed to stainless steel through-shafts. Changes of surface axial magnetic field in response to applied torque as high as 64 AN{sup {minus}1}m{sup {minus}2} were observed for a demonstration sample of dimensions 25 mm OD, 12.5 mm ID, and 8 mm high. A hysteresis of {+-}0.5 N{center{underscore}dot}m was observed. These materials appear to be promising candidates for torque sensors, and other magnetostrictive sensor and actuator applications.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Ames Lab., IA (US)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
20000801
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION; 36 MATERIALS SCIENCE; MEASURING INSTRUMENTS; TORQUE; COMPOSITE MATERIALS; SILVER ALLOYS; NICKEL ALLOYS; COBALT ALLOYS; COBALT OXIDES; IRON OXIDES; MAGNETOSTRICTION

Citation Formats

Chen, Y., Snyder, J.E., Schwichtenberg, C.R., Dennis, K.W., McCallum, R.W., and Jiles, D.C. Metal-bonded Co-ferrite composites for magnetorestrictive torque sensor applications. United States: N. p., 1999. Web. doi:10.1109/20.800620.
Chen, Y., Snyder, J.E., Schwichtenberg, C.R., Dennis, K.W., McCallum, R.W., & Jiles, D.C. Metal-bonded Co-ferrite composites for magnetorestrictive torque sensor applications. United States. doi:10.1109/20.800620.
Chen, Y., Snyder, J.E., Schwichtenberg, C.R., Dennis, K.W., McCallum, R.W., and Jiles, D.C. Wed . "Metal-bonded Co-ferrite composites for magnetorestrictive torque sensor applications". United States. doi:10.1109/20.800620.
@article{osti_20000801,
title = {Metal-bonded Co-ferrite composites for magnetorestrictive torque sensor applications},
author = {Chen, Y. and Snyder, J.E. and Schwichtenberg, C.R. and Dennis, K.W. and McCallum, R.W. and Jiles, D.C.},
abstractNote = {A new class of magnetomechanical sensor materials, co-ferrite (CoO {center{underscore}dot} Fe{sub 2}O{sub 3}) and metal-bonded (Ag, Ni, Co) Co-ferrite composites, has been investigated. These materials exhibited magnetostriction in excess of 200 ppm and high d{sub 33} ({partial{underscore}derivative}{lambda}/{partial{underscore}derivative}H){sub {sigma}} coefficient, 1.3 x 10{sup {minus}9} A{sup {minus}1}m, at low applied field (<100 kA/m). Selected compositions were formed into test samples in the form of rings brazed to stainless steel through-shafts. Changes of surface axial magnetic field in response to applied torque as high as 64 AN{sup {minus}1}m{sup {minus}2} were observed for a demonstration sample of dimensions 25 mm OD, 12.5 mm ID, and 8 mm high. A hysteresis of {+-}0.5 N{center{underscore}dot}m was observed. These materials appear to be promising candidates for torque sensors, and other magnetostrictive sensor and actuator applications.},
doi = {10.1109/20.800620},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}