Preparation method of cemented carbide with iron, cobalt and copper medium-entropy alloy as binding phase

US11718899B1 · kind B1 · utility

Assignee

• Hefei University of Technology · CN

Inventors

• Jigui Cheng · Hefei, CN
• Ruizhi CHEN · Beijing, CN
• Bin Wang · Dongguan, CN
• Pengqi Chen · Hefei, CN
• Yuyang Li · Qingdao, CN
• Dang Xu · 红钢城街道, CN

Key dates

• Filing date: Dec 31, 2022
• Grant date: Aug 8, 2023
• Expiry date: Dec 31, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A preparation method of cemented carbide with FeCoCu medium-entropy alloy as binding phase is provided. The preparation method includes: 1) preparing FeCoCu precursor powders by solution combustion synthesis; 2) preparing FeCoCu medium-entropy alloy powders by mechanical alloying; 3) evenly mixing the FeCoCu medium-entropy alloy powders with ultra-fine WC powders and a binder to obtain mixed powders and pressing the mixed powders into a shaped green body; 4) preparing a WC-FeCoCu cemented carbide by microwave sintering after removing the binder from the shaped green body. The preparation method reduces sintering temperature and time and obtains a new-type cemented carbide with fine grains, high hardness and good toughness while reducing the cost.