Chromium nitride thermoelectric material and preparation method thereof

US10541356B2 · kind B2 · utility

Assignee

• University of Electronic Science and Technology of China · CN

Inventors

• Chao Wang · Tainan, TW
• Junfeng Xia · Sichuan, CN
• Jing Jiang · Beijing, CN
• Ting Zhou · Shanghai, CN
• Yide Chen · Sichuan, CN
• Yi Niu · Sichuan, CN
• Rui Zhang · Hubei, CN
• Hanqing Tian · Sichuan, CN
• Yan Pan · Sichuan, CN

Key dates

• Filing date: Mar 27, 2018
• Grant date: Jan 21, 2020
• Expiry date: Mar 27, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N10/01
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention discloses CrN thermoelectric material and its preparation method, which belongs to the field of thermoelectric materials. Here, we provide a study for thermoelectric properties, hardness, wear-resisting performance and thermal stability of CrN. These results show that CrN possesses excellent mechanical properties and thermal stability. The hardness of the bulk CrN sample is as high as 735.76 HV, which is far superior to most of thermoelectric materials. The thermogravimetric analysis test indicates that CrN remain stable at 873 K. Friction and wear test results demonstrate that the low friction coefficient (˜0.42) and good wear resistance of CrN. The maximum ZT value of 0.104 is observed at 848 K. In this way, CrN may be a promising thermoelectric material in extreme environment application which requires both mechanical and thermoelectric properties. Such as collision avoidance systems and outerspace.