Electrically conductive Si-Ti-C-N ceramics

US7128850B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Ren-Guan Duan · Fremont, US
• Joshua D. Kuntz · Livermore, US
• Amiya K. Mukherjee · Davis, US

Key dates

• Filing date: Jun 2, 2003
• Grant date: Oct 31, 2006
• Expiry date: Oct 31, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/96
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Composite materials containing silicon, titanium, carbon, and nitrogen, formed by spark plasma sintering of ceramic starting materials to a high relative density, demonstrate unusually high electrical conductivity as well as high-performance mechanical and chemical properties including hardness, fracture toughness, and corrosion resistance. This combination of electrical, mechanical, and chemical properties makes these composites useful as electrical conductors in applications where high-performance materials are needed due to exposure to extreme conditions such as high temperatures, mechanical stresses, and corrosive environments.