The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2024
Filed:
Jul. 31, 2020
Oerlikon Surface Solutions Ag, Pfäffikon, Pfäffikon, CH;
Jürgen Becker, Geisenheim, DE;
Neir Beganovic, Buchs, CH;
Johann Karner, Triesen, LI;
Timea Stelzig, Boppard, DE;
Jörg Vetter, Bergisch Gladbach, DE;
Oerlikon Surface Solutions AG, Pfäffikon, Pfäffikon, CH;
Abstract
A method to produce a hard coating onto a substrate, wherein the hard coating comprises a hydrogen-free amorphous carbon coating, wherein the amorphous carbon coating is deposited onto the substrate using a cathodic arc discharge deposition technique, wherein a bias voltage is applied to the substrate with an absolute value that is greater than 0 V, preferably greater than 10 V and less than 1000 V, and wherein the absolute value of the bias voltage is increased during the coating process to obtain a first structure and a second structure and a gradient between the first and the second structure along the coating thickness, wherein the first and the second structure comprise sp2 and sp3 carbon bonds but differ in their relative concentration, wherein at least one coating pause is applied during the coating process in order to reduce the substrate temperature during the coating pause.