中国物理B ›› 2017, Vol. 26 ›› Issue (8): 84703-084703.doi: 10.1088/1674-1056/26/8/084703

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Comparison between AlN and Al2O3 ceramics applied to barrier dielectric of plasma actuator

Dong-Liang Bian(卞栋梁), Yun Wu(吴云), Min Jia(贾敏), Chang-Bai Long(龙昌柏), Sheng-Bo Jiao(焦胜博)   

  1. 1 Air Force Engineering University, Xi'an 710038, China;
    2 Xi'an Jiaotong University, Xi'an 710049, China
  • 收稿日期:2017-02-24 修回日期:2017-04-13 出版日期:2017-08-05 发布日期:2017-08-05
  • 通讯作者: Yun Wu E-mail:wuyun1223@126.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51522606, 91541120, 51502346, and No.51407194).

Comparison between AlN and Al2O3 ceramics applied to barrier dielectric of plasma actuator

Dong-Liang Bian(卞栋梁)1, Yun Wu(吴云)2, Min Jia(贾敏)1, Chang-Bai Long(龙昌柏)1, Sheng-Bo Jiao(焦胜博)1   

  1. 1 Air Force Engineering University, Xi'an 710038, China;
    2 Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2017-02-24 Revised:2017-04-13 Online:2017-08-05 Published:2017-08-05
  • Contact: Yun Wu E-mail:wuyun1223@126.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51522606, 91541120, 51502346, and No.51407194).

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摘要：

This paper reports the material characterization and performance evaluation of an AlN ceramic based dielectric barrier discharge (DBD) plasma actuator. A conventional Al2O3 ceramic is also investigated as a control. The plasma images, thermal characteristics and electrical properties of the two actuators are compared and studied. Then, with the same electrical operating parameters (12-kV applied voltage and 11-kHz power frequency), variations of the surface morphologies, consumed power and induced velocities are recorded and analyzed. The experimental results show that the AlN actuator can produce a more uniform discharge while the discharge of the Al2O3 actuator is easier to become filamentary. The later condition leads to higher power consumption and earlier failure due to electrode oxidation. In the plasma process, the power increment of the AlN actuator is higher than that of the Al2O3 actuator. The induced velocity is also influenced by this process. Prior to aging, the maximum induced velocity of the AlN actuator is 4.2 m/s, which is about 40% higher than that of the Al2O3 actuator. After 120-min plasma aging, the maximum velocity of the aged AlN actuator decreases by 27.8% while the Al2O3 actuator registers a decrease of 25%.

关键词: plasma, DBD, flow control, discharge, ionic wind, Al2O3 ceramic, AlN ceramic

Abstract:

This paper reports the material characterization and performance evaluation of an AlN ceramic based dielectric barrier discharge (DBD) plasma actuator. A conventional Al2O3 ceramic is also investigated as a control. The plasma images, thermal characteristics and electrical properties of the two actuators are compared and studied. Then, with the same electrical operating parameters (12-kV applied voltage and 11-kHz power frequency), variations of the surface morphologies, consumed power and induced velocities are recorded and analyzed. The experimental results show that the AlN actuator can produce a more uniform discharge while the discharge of the Al2O3 actuator is easier to become filamentary. The later condition leads to higher power consumption and earlier failure due to electrode oxidation. In the plasma process, the power increment of the AlN actuator is higher than that of the Al2O3 actuator. The induced velocity is also influenced by this process. Prior to aging, the maximum induced velocity of the AlN actuator is 4.2 m/s, which is about 40% higher than that of the Al2O3 actuator. After 120-min plasma aging, the maximum velocity of the aged AlN actuator decreases by 27.8% while the Al2O3 actuator registers a decrease of 25%.

Key words: plasma, DBD, flow control, discharge, ionic wind, Al2O3 ceramic, AlN ceramic

中图分类号:  (Flow control)

  • 47.85.L-
52.25.Mq (Dielectric properties) 52.50.-b (Plasma production and heating) 81.05.Je (Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides))