Metallic multicomponent carbides

US12017920B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Kenneth Vecchio · San Diego, US
• Tyler Harrington · New York, US

Key dates

• Filing date: Nov 10, 2020
• Grant date: Jun 25, 2024
• Expiry date: Feb 6, 2043

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/5611
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A multicomponent carbide has at least five transition metals, and a valence electron concentration (VEC) is greater 8.80 electrons. Preferred off-equiatomic multicomponent carbides have five transition metals and a VEC of more than 8.80. Preferred equiatomic multicomponent carbides have five transition metals and a VEC of 9.00 or greater. The valence electron configuration is important for its relationship to the mechanical properties of carbides. Since carbon forms four bonds, when there are more than four valence electrons available from the metals, there are excess electrons in the system. This increases metallic character of bonding and therefore allows for more ductility and higher toughness.