Surface hardening of substrates by a particle-containing cavitating waterjet

US11414717B2 · kind B2 · utility

Assignee

• Northwestern University · US

Inventors

• Qian Wang · Miami, US
• Yip-Wah Chung · Wilmette, US
• Kornel Ehmann · Evanston, US
• Xingliang He · Fremont, US
• Yi Shi · Beijing, CN
• Zhong Liu · Miaocheng, CN

Key dates

• Filing date: Mar 21, 2018
• Grant date: Aug 16, 2022
• Expiry date: Feb 23, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C24/04
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In an embodiment, a method of hardening a surface of a substrate comprises directing a waterjet having a transition flow region, the waterjet comprising water and particles, at a surface of a substrate such that the waterjet impacts the surface within the transition flow region to provide a layer of embedded particles underneath the surface of the substrate, thereby forming a hardened substrate. The hardened substrates are also provided.