SHAFT MEMBER FOR MAGNETOSTRICTIVE TORQUE SENSOR

Title:

SHAFT MEMBER FOR MAGNETOSTRICTIVE TORQUE SENSOR

Document Type and Number:

Japanese Patent JPH08184511

Kind Code:

A

Abstract:

PURPOSE: To obtain a shaft member for magnetostrictive torque sensor having repetitive fatigue sensitivity characteristics which do not deteriorate.

CONSTITUTION: A layer exhibiting magnetostrictive effect is diffused and bonded to the surface of a shaft in order to detect torque thereof. In the shaft member being employed in such magnetostrictive torque sensor, a diffusion layer formed at the interface of the magnetostrictive layer and the shaft member includes a hard phase principally comprising Cr and B. The diffusion layer has thickness in the range of 7.5-35% that of the magnetostrictive layer and the hard phase, included in the diffusion layer, preferably contains 8atm% or more of Cr and 15atm% or more of B.

Inventors:

OUCHI YUKIHIRO
TANAKA HIROKAZU
YOSHIDA KAZUFUMI
SUGIHARA TADASHI

Application Number:

JP33905194A

Publication Date:

July 16, 1996

Filing Date:

December 28, 1994

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP

International Classes:

G01L3/10; C23C4/08; (IPC1-7): G01L3/10; C23C4/08

Attorney, Agent or Firm:

Takahisa Sato (1 outside)

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