Micron silver particle-reinforced 316L stainless steel matrix composite and preparation method thereof

US11946122B2 · kind B2 · utility

Assignee

• Nanjing University of Aeronautics and Astronautics · CN

Inventors

• Dongdong GU · Nanjing, CN
• Kaijie Lin · Nanjing, CN
• Jingfeng Quan · Nanjing, CN
• Yamei Fang · Nanjing, CN
• Qing Ge · Solon, US
• Jie ZHUANG · Nanjing, CN
• Yang Liu · Shanghai, CN
• Weisong Dong · Nanjing, CN
• Pengjiang Shuai · Nanjing, CN

Key dates

• Filing date: Jul 23, 2020
• Grant date: Apr 2, 2024
• Expiry date: Dec 24, 2041

Classification

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

Abstract

The present disclosure relates to a micron silver particle-reinforced 316L stainless steel matrix composite, including a 316L stainless steel matrix and silver particles uniformly distributed in the 316L stainless steel matrix. The silver particles have a weight 1% to 5% of the total weight of the composite; and the composite has a density of 7.9 g/cm3 to 8.2 g/cm3 and a relative density of more than 98%. The composite is prepared by the following method: mixing raw materials of a spherical silver powder and a spherical 316L stainless steel powder; subjecting a resulting mixture to mechanical ball milling to obtain a mixed powder; sieving the mixed powder and adding a resulting powder to a powder cylinder of an SLM forming machine; and charging an inert protective gas for printing to obtain the composite.