Antiwear-coated metal component, in particular for a ball valve, and method for applying a multi-layer antiwear coating in order to produce a component of this type

US11753728B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Marcus Guenther · Hörstel, DE
• Richard Braak · Stuttgart, DE
• Gerald Schuetze · Hofheim, DE
• Michael Fraune · Stuttgart, DE

Key dates

• Filing date: Jan 7, 2019
• Grant date: Sep 12, 2023
• Expiry date: Jun 21, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/9046
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to an antiwear-coated metal component (1), in particular for a ball valve (6), the tribosurface of which component is at least partially provided with a multi-layer antiwear coating (2). The antiwear coating (2) has at least a metal adhesion layer (3a), an adhesion-promoting layer (3b) and at least one first cover layer (3c). The adhesion-promoting layer (3b) comprises a carbide-forming metal or a boride-forming metal. The at least first cover layer (3c) comprises a hydrogen-free tetrahedral carbon. The invention further relates to a method for applying an antiwear coating (2) to a metal substrate (9) in order to produce an antiwear-coated metal component (1) of this type. The invention further relates to a ball valve, comprising an antiwear-coated metal component (1) of this type and an antiwear coating (2).