Application method and device for cold field plasma discharge assisted high energy ball milled powder

US10758916B2 · kind B2 · utility

Assignee

• South China University of Technology · CN

Inventors

• Min Zhu · Los Altos Hills, US
• Meiqin Zeng · 流花街道, CN
• Zhongchen Lu · 流花街道, CN
• Liuzhang Ouyang · Longbeilingcun, CN
• Hui Wang
• Renzong Hu · 流花街道, CN

Key dates

• Filing date: Dec 24, 2014
• Grant date: Sep 1, 2020
• Expiry date: Nov 29, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C19/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Generating plasma by using dielectric barrier discharge and introducing a dielectric barrier discharge electrode bar into a high-speed vibrating ball milling tank requires that, on one hand, a solid insulation medium on the outer layer of the electrode bar can simultaneously bear high-voltage discharge and mechanical shock failure of the grinding ball, and on the other hand, the high-speed vibrating ball milling device can uniformly process the powder. The discharge space pressure is set to a non-thermal equilibrium discharge state with a pressure of about 102 to 106 Pa, discharge plasmas are introduced to input another kind of effective energy to the processed powder, so as to accelerate refinement of the powder to be processed and promote the alloying process and improve the processing efficiency and the effect of the ball mill.