Patent · US Active

Device and method for electrochemically processing a material

US11554432B2 · kind B2 · utility

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1References

20Claims

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Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Michael Schneider · Wien, AT
Nils Junker · Dresden, DE

Key dates

Filing date	May 22, 2019
Grant date	Jan 17, 2023
Priority date	—
Expiry date	May 22, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23H2300/10
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a method and a device for electrochemically processing a material, which contains a hard phase and a binder phase. The method comprises preparing an aqueous, alkaline, complexing-agent-containing electrolyte and bringing the material to be processed into contact at least in part with the electrolyte and with a current source. In order to electrochemically oxidize the material, a pulsed electrical current is delivered to the material by means of the current source, the pulse sequence of the delivered electrical current being adjusted to the amount of the binder phase in the material to be processed. By means of the method and by means of the device, it is also possible to process materials having a high content of binder phase in such a way that matter can be removed from the material evenly (homogeneously), i.e. both from the hard phase and from the binder phase of the material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.