SLIDING CONTACT MATERIAL COMPRISING Ag-Ni BASED ALLOY HAVING Ni METAL PARTICLES DISPERSED AND CLAD COMPOSITE MATERIAL, AND DC COMPACT MOTOR USING THE SAME

Title:

SLIDING CONTACT MATERIAL COMPRISING Ag-Ni BASED ALLOY HAVING Ni METAL PARTICLES DISPERSED AND CLAD COMPOSITE MATERIAL, AND DC COMPACT MOTOR USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2002/008480

Kind Code:

A1

Abstract:

A sliding contact material comprising Ag-Ni based alloy having Ni metal particles dispersed for use in a sliding part for practicing electrical make and break by mechanical sliding operations, characterized in that it is prepared by admixing 0.7 to 3.0 wt.% of a Ni powder, 0.01 to 0.50 wt.% in terms of metal of a Li¿2?CO¿3? powder and the balanced amount of a Ag powder, followed by agitating, to form a homogeneously dispersed admixture, and subjecting the admixture to a forming treatment and a sintering treatment. The sliding contact material has an alloy composition having no hazardous materials such as Cd, is excellent particularly in contact resistance characteristics, exhibits good electrical functions, is free from the change with the elapse of time, and further has an abrasion resistance being practically similar or superior to those of conventional sliding contact materials. The sliding contact material, which has excellent durability, can be used in a commutator of a DC compact motor in order to prolong the useful life of the motor.

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Inventors:

NAKAMURA KEIJI (JP)
HONMA TAKEMASA (JP)
HASHIMOTO YASUHIRO (JP)
SAKAGUCHI OSAMU (JP)
TANEICHI KENGO (JP)
YAMAMOTO TOSHIYA (JP)

Application Number:

PCT/JP2001/006218

Publication Date:

January 31, 2002

Filing Date:

July 18, 2001

Export Citation:

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Assignee:

MABUCHI MOTOR CO (JP)
TANAKA PRECIOUS METAL IND (JP)
NAKAMURA KEIJI (JP)
HONMA TAKEMASA (JP)
HASHIMOTO YASUHIRO (JP)
SAKAGUCHI OSAMU (JP)
TANEICHI KENGO (JP)
YAMAMOTO TOSHIYA (JP)

International Classes:

C22C1/04; C22C1/10; C22C5/06; C22C32/00; H01B1/02; C22C1/05; H01H1/023; H01H1/04; H01H11/04; H01R39/02; H02K13/00; H01H1/36; H01R43/06; (IPC1-7): C22C32/00; H02K13/00; H01H1/02; H01H1/04; H01H11/04

Foreign References:

JPS5681649A	1981-07-03
US4502899A	1985-03-05
JPS5213689A	1977-02-02
JPS5893849A	1983-06-03
JPH0371522A	1991-03-27
JPS61246337A	1986-11-01

Other References: