STRESS SENSOR - NIPPON STEEL CORP

Title:

STRESS SENSOR

Document Type and Number:

WIPO Patent Application WO/1995/027889

Kind Code:

A1

Abstract:

A stress sensor which is bonded to an article and generates a Barkhausen signal, of which the dependence on temperature is lowered. The stress sensor is made of a steel material having a structure in which a granular carbide consisting of an element M (at least one kind of element selected from the group consisting of Fe, Al, B, Co, Cr, Mn, Mo, Nb, Ni, Si, Sn, Ti, U, V, W and Zr) and C is precipitated in ferrite crystals. Preferably, the mean particle size of the granular carbide precipitated in the structure is from 0.05 to 1.0 'mu'mg and the standard deviation of the grain size distribution of the granular carbide is from 0.14 to 2.0 'mu'm. Preferably, the mean grain size of the granular carbide is from 1.0 to 3.0 'mu'm and further preferably, the carbide is an M3C compound.

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Inventors:

SUGINO KAZUO (JP)
SAKAMOTO HIROAKI (JP)
INAGUMA TORU (JP)

Application Number:

PCT/JP1995/000696

Publication Date:

October 19, 1995

Filing Date:

April 07, 1995

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
SUGINO KAZUO (JP)
SAKAMOTO HIROAKI (JP)
INAGUMA TORU (JP)

International Classes:

C22C38/00; G01L1/12; G01N27/72; (IPC1-7): G01L1/12; C22C38/00; H01L41/12

Foreign References:

JPS62229038A	1987-10-07
JPS63252487A	1988-10-19
JPH0472042A	1992-03-06
JPH0445245A	1992-02-14
JPH0426752A	1992-01-29
JPH03265104A	1991-11-26

Other References: