| 摘要 |
PURPOSE:To obtain a torque sensor having excellent linearity in the detection of torque extending over a wide range by fixing a magnetic metallic thin band, a saturation magnetostriction constant lambdas thereof is kept within a specific range, to a shaft and detecting the change of the magnetic characteristics of the thin band in a non-contact manner. CONSTITUTION:A magnetic metallic thin band 22 having magnetostriction, a saturation magnetostriction constant lambdas thereof satisfies the relationship of formula 1X10<-6=¦lambdas¦<20X10<-6>, is fixed to a shaft 21, and torque is measured by detecting a change by torque applied to the shaft 21 of the magnetic characteristics of the thin band in a noncontact manner. An amorphous alloy consisting of a composition such as one of (Co1-a-bFeaMb)zSixBy (where M represents one kind or more of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Re, Ru, Ir, Pd, Pt, Ag, Au, Cu, Zn, Al, Ga, In, Ge, Sn, Pb, Sb, Bi, Y, and a rare-earth metal and 0.05<= a<=0.5, 0<=b<=0.15, 0<=x<=20, 4<=y<=35, x+y+z=100) is used as said magnetic metal thin band 22. |
