Base metal composite electrical contact material

Details Base metal composite electrical contact material Base metal composite electrical contact material

1982-09-03

1984-10-09

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

75228, 29875, 156630, 156634, 156643, 156646, 156664, 156667, 2041291, 204192E, 428553, C23F 102, B44C 122, C03C 1500, C03C 2506

Patent

active

044759835

ABSTRACT:
A composite contact material for light-duty electrical contacts is formed by combining, typically by powder-metallurgical techniques, a matrix metal and particles of a conductive material that is typically harder and more corrosion resistant than the matrix metal, and by removing, in a differential material removal step, some of the matrix metal from a surface of the composite, thereby producing a "sandpaper" surface with a substantial number of the particles projecting by a substantial amount above the matrix metal surface. Typical matrix metals are copper, copper alloys, or nickel, and typical particle materials are metals such as Ru, Re, Os, and intermetallics, oxides, borides, nitrides, carbides, silicides, and phosphides of such metals as Al, Ti, Ni, Nb, Mo, Ru, Ta, W, Re, or Os. Particle size is typically between about 0.1 .mu.m and 100 .mu.m, preferably less than 10 .mu.m, and the particle volume fraction is typically between about 1% and 50%, preferably between 5% and 30%. Any appropriate differential material removal method, including chemical, plasma, sputter, thermal, and electrolytic etching, can be used.

REFERENCES:
patent: 2504906 (1950-04-01), Tremblay
patent: 3778257 (1973-12-01), Davies
patent: 3841869 (1974-10-01), Davies
patent: 3920452 (1975-11-01), Davies
Electrocomponent Science and Technology, vol. 2, 1976, pp. 259-261, Silver-Ruthenium Dioxide Contacts by D. J. Pedder.

Affiliated with

Also associated with

Rating

Base metal composite electrical contact material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Base metal composite electrical contact material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Base metal composite electrical contact material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1598899