Precise surface machining of fused silica using high stability atmospheric pressure microwave plasma jet with a new internal electrode

Wang，Chuansheng1; Wu，Bing1; Hang，Wei2,3; Lu，Dong1; Deng，Hui1,4

2024-06-01

10.1016/j.surfin.2024.104379

Surfaces and Interfaces   影响因子和分区

2468-0230

Plasma is a promising approach for machining of fused glass substrates. Developing high-performance microwave torch is the core element to ensure the processing accuracy of this technology. In this study, a spline curve-based microwave torch internal electrode structure was proposed, which increased the internal electric field strength by 54 %. The discharge dynamics simulation based on this electrode shows that the plasma is excited at the inner electrode tip and the bottom of the resonant cavity, then it expands to form a linear discharge region and eventually fill the discharge tube. It was revealed by CCD images that with the increase of carrier gas flow rate, turbulent flow state appears in the tail of the jet. OES data shows that microwave Ar plasma can effectively dissociate CF, and due to the oxidation effect of oxygen, CF and C content decrease significantly with the addition of oxygen. The machining experiment on fused silica shows that the material removal stability of this torch reaches 3.69 %, and the removal rate increases nY arly with dwell time due to thermal effect. Finally, the machining performance of the atmospheric pressure microwave plasma jet was verified by figuring of a planar fused silica surface reducing the form error from 108.1 nm RMS to 16.5 nm RMS.

Dwell time algorithm Microwave plasma jet Plasma machining Spline curve electrode

SCI

英语

第一

2-s2.0-85191326364

Scopus

1.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
2.College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou,310014,China
3.Key Laboratory of Special Purpose Equipment and Advanced Processing Technology,Ministry of Education and Zhejiang Province,Zhejiang University of Technology,Hangzhou,310014,China
4.Shenzhen Engineering Research Center for Semiconductor-specific Equipment,Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Wang，Chuansheng,Wu，Bing,Hang，Wei,et al. Precise surface machining of fused silica using high stability atmospheric pressure microwave plasma jet with a new internal electrode[J]. Surfaces and Interfaces,2024,49.

Wang，Chuansheng,Wu，Bing,Hang，Wei,Lu，Dong,&Deng，Hui.(2024).Precise surface machining of fused silica using high stability atmospheric pressure microwave plasma jet with a new internal electrode.Surfaces and Interfaces,49.

Wang，Chuansheng,et al."Precise surface machining of fused silica using high stability atmospheric pressure microwave plasma jet with a new internal electrode".Surfaces and Interfaces 49(2024).