Spectroscopic Method for Measurement of Electron Number Density on DC Arc Plasma Jet Under Low Pressure Conditions

SUN Cheng-qi; GAO Yang; YANG De-ming; FU Ying-qing

doi:10.3788/fgxb20153601.0088

您当前的位置：

首页 >

文章列表页 >

Spectroscopic Method for Measurement of Electron Number Density on DC Arc Plasma Jet Under Low Pressure Conditions

更新时间：2020-08-12

- Spectroscopic Method for Measurement of Electron Number Density on DC Arc Plasma Jet Under Low Pressure Conditions
- Chinese Journal of Luminescence Vol. 36, Issue 1, Pages: 88-93(2015)
- 作者机构：
  
  1. 大连海事大学交通运输装备与海洋工程学院,辽宁大连,116026
  2. 广东海洋大学航海学院,广东湛江,524088
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153601.0088
  CLC： TG403
- Received：18 October 2014，
  
  Revised：20 November 2014，
  
  Published：03 January 2015
- 稿件说明：
移动端阅览
孙成琪, 高阳, 杨德明等. 低压下直流电弧热等离子体射流电子密度的光谱法测量[J]. 发光学报, 2015,36(1): 88-93

SUN Cheng-qi, GAO Yang, YANG De-ming etc. Spectroscopic Method for Measurement of Electron Number Density on DC Arc Plasma Jet Under Low Pressure Conditions[J]. Chinese Journal of Luminescence, 2015,36(1): 88-93
孙成琪, 高阳, 杨德明等. 低压下直流电弧热等离子体射流电子密度的光谱法测量[J]. 发光学报, 2015,36(1): 88-93 DOI： 10.3788/fgxb20153601.0088.

SUN Cheng-qi, GAO Yang, YANG De-ming etc. Spectroscopic Method for Measurement of Electron Number Density on DC Arc Plasma Jet Under Low Pressure Conditions[J]. Chinese Journal of Luminescence, 2015,36(1): 88-93 DOI： 10.3788/fgxb20153601.0088.

摘要

采用原子发射光谱仪研究低压直流电弧热喷涂等离子体射流的特性。利用Stark展宽法采集H

谱线

使用其

1/2

来计算等离子射流中的电子密度

研究了氢气流量、输入功率和探测距离对等离子体射流中电子密度的影响。使用Saha方程计算热等离子体的电离程度

研究了功率/氢气流量与等离子体电离程度的关系。结果表明:电子密度和电离程度随着电流强度的增大而增加;氢气流量增加可以明显提高等离子体射流的能量

但对电离程度影响不大。

Abstract

The characteristics of the low pressure direct current arc thermal spray plasma jet were analyzed by using optical emission spectra. The effects of different power levels

flow rates of H

and detection distance on the electron number density of the thermal spray plasma jet were investigated. The electron number density of the plasma jet was determined using

1/2

of H

(486.13 nm) line. At the same time

the degree of ionization was analyzed using Saha equation

and the effects of H

flow rate and arc electric current on the degree of ionization were discussed. The results show that the electron number density and ionization degree of the plasma increase with the increasing of the input power

and the increasing of H

flow rate can enhance the energy of the plasma jet

but has a little effect on the degree of ionization.

关键词

Keywords

references

Pawlowski L. The Science and Engineering of Thermal Spray Coatigs [M]. Hoboken: John Wiley & Sons, 2008:543-585.

Gao Y, Yang D M, Sun C Q, et al. Deposition of YSZ coatings in a chamber at pressures below 100 Pa using low-power plasma spraying with an internal injection powder feeding [J]. J. Thermal Spray Technol., 2013, 22(7):2013-1253.

Pfender E. Thermal plasma technology: Where do we stand and where are we going? [J]. Plasma Chem. Plasma Proc., 1999, 19(1):1-31.

Mauer G, Vaben R, Stover D. Plasma and particle temperature measurements in thermal spray: Approaches and applications [J]. J. Thermal Spray Technol., 2011, 20(3):391-406.

Chen W L T, Heberlein J, Pfender E. Diagnostics of a thermal plasma jet by optical emission spectroscopy and enthalpy probe measurements [J]. Plasma Chem. Plasma Proc., 1993, 14(3):317-331.

Joshi N K, Sahasrabudhe S N, Sreekumar K P, et al. Axial variation of electron number density in thermal plasma spray jets [J]. Eur. Phys. J.: E, 2003, 26:215-219.

Rajabian M, Gravelle D V, Vacquie S. Measurements of temperatures and electron number density in argon-nitrogen plasma jet generated by a DC torch-operating close to supersonic threshold [J]. Plasma Chem. Plasma Proc., 2004(24):261-283.

Pan C G, Hua X M, Zhang W, et al. Calculating the Stark broadening of welding arc spectra by Fourier transform method [J]. Spectrosc. Spect. Anal.(光谱学与光谱分析), 2012, 32(7):1739-1743 (in Chinese).

Dong L F, Liu W Y, Yang Y J, et al. Spectral diagnostics of electron density of plasma torch at atmospheric pressure [J]. Acta Phys. Sinica (物理学报), 2011, 60(4):045202-1-5 (in Chinese).

Yugeswaran S, Selvarajan V. Electron number density measurement on a DC argon plasma jet by Stark broadening of ArⅠspectral line [J]. Vacuum, 2006, 81:347-352.

Tu X, Lu S Y, Yan J H, et al. Spectroscopic diagnostics of DC argon plasma at atmospheric pressure [J]. Spectrosc. Spect. Anal.(光谱学与光谱分析), 2006, 26(10):1785-1789 (in Chinese).

Dong L F, Tong G L, Zhang Y, et al. Study on plasma temperature of a large area surface discharge by optical emission spectrum [J]. Spectrosc. Spect. Anal.(光谱学与光谱分析), 2014, 34(4):919-921 (in Chinese).

Gao Y, Yang D M, Gao J Y. Characteristics of a plasma torch designed for very low pressure plasma spraying [J]. J. Thermal Spray Technol., 2012, 21(3-4):740-744.

Chen X. Heat Transfer and Flow in Thermal Plasma [M]. Beijing: Science Press, 2009:29-73 (in Chinese).

Zheng G J, Ji Z H, Yu X. Analysis Technology and Application of Atomic Emission Spectroscopy [M]. Beijing: Chemical Industry Press, 2010:8-53 (in Chinese).

Semenov S, Cetegen B. Spectroscopic temperature measurements in direct current arc plasma jets used in thermal spray processing of materials [J]. J. Thermal Spray Technol., 2011, 10(2):326-336.

Sun C Q, Gao Y, Yang D M, et al. Electron temperature and electron number density measurement on the plasma jet under the atmosphere thermal plasma spray [J]. Chin. J. Vac. Sci. Technol.(真空科学与技术), 2013, 33(12):1209-1213 (in Chinese).

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰