Ti(C,N)-based superhard metal composite material and preparation method thereof

US11319618B2 · kind B2 · utility

Assignee

• Chongqing University of Arts and Sciences · CN

Inventors

• Ying-Cong Deng · Taoyuan, TW
• Shan Jiang · Liverpool, GB
• Yanhua Zhang · Nanhu, CN
• Taibin Wu · Chongqing, CN
• Qiaowang Chen · Chongqing, CN
• Hui YAN · Chongqing, CN
• Ling Deng · Dunlap, US
• Hui Chen · South El Monte, US

Key dates

• Filing date: Dec 24, 2019
• Grant date: May 3, 2022
• Expiry date: May 13, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2999/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The disclosure relates to a method for preparing Ti(C,N)-based superhard metal composite materials, with Ti(C,N) powder and (W,Mo,Ta)(C,N) powder as main raw materials and Co powder as binding phase for preparation, thereby obtaining a material in which a microstructure is a double-core rim structure that has both a black core rim and a white core rim. The material has a complete and evenly distributed double-core rim structure. In the condition that the ensured hardness of the material is not reduced and even slightly increased, the toughness of the material is significantly improved, wherein the fracture toughness of the material is in the range of 11.3 to 12.5 MPa·m1/2.