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US 11,331,740 B2Granted
Ignition device component produced by cold metal transfer process
AssigneeJohnson Matthey Public Limited Company
InventorsMichael Clover, Stephan Herbst
Life of this patent
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Abstract
The present invention relates to noble metal-containing components prepared by cold metal transfer (CMT) methods, along with methods of preparing such components by CMT. More especially, an advantageous method of preparing a platinum metal group metal or alloy containing ignition device component by CMT is provided.
Claims20
A process for the production of an ignition device component by cold metal transfer comprising:
- (i) providing a metal or alloy substrate and a metal or alloy feed wire, wherein the feed wire comprises a platinum group metal or platinum group metal containing alloy;
- (ii) igniting an electric arc between the substrate and the feed wire;
- (iii) decreasing the distance between a surface of the substrate and the feed wire until the feed wire contacts the substrate, thereby creating a short-circuit;
- and
- (iv) increasing the distance between the substrate and the feed wire to break the short circuit and deposit metal or alloy from the feed wire onto the surface of the substrate to form a metal or alloy attachment on the surface of the substrate.
2 more elements
A process for the production of a noble metal-containing component by cold metal transfer comprising:
- (i) providing a metal or alloy substrate and a feed wire, wherein the feed wire comprises a noble metal or noble metal-containing alloy;
- (ii) igniting an electric arc between the substrate and the feed wire;
- (iii) decreasing the distance between a surface of the substrate and the feed wire until the feed wire contacts the substrate, thereby creating a short-circuit;
- and
- (iv) increasing the distance between the substrate and the feed wire to break the short circuit and deposit metal or alloy from the feed wire onto the surface of the substrate to form a metal or alloy attachment on the surface of the substrate.
2 more elements
Dependencies are inferred from the claim text.