Synchronised electrical monitoring and high speed video of bubble growth associated with individual discharges during plasma electrolytic oxidation
作者： SC Troughton , Alexandre Nomine , AV Nominé , Gérard Henrion , TW Clyne
DOI: 10.1016/J.APSUSC.2015.10.124
关键词:
摘要: Abstract Synchronised electrical current and high speed video information are presented from individual discharges on Al substrates during PEO processing. Exposure time was 8 μs linear spatial resolution 9 μm. Image sequences were captured for periods of 2 s, which the sample surface illuminated with short duration flashes (revealing bubbles formed where discharge reached coating). Correlations thus established between current, light emission channel (externally-illuminated) dimensions bubble as it expanded contracted. Bubbles radii 500 μm, within 100 μs, peak growth velocity about 10 m/s. It is deduced that occurs a consequence progressive volatilisation water (electrolyte), without substantial increases in either pressure or temperature bubble. Current continues to flow through expands, this (and related increase resistance) thought be responsible being cut off (soon after point maximum radius). A semi-quantitative audit transformations different forms energy take place lifetime discharge.
harvard.edu
archives-ouvertes.fr
elsevier.com
sci-hub.se 参考文章(27)
A.G. Rakoch, A.A. Gladkova, Zayar Linn, D.M. Strekalina, The evidence of cathodic micro-discharges during plasma electrolytic oxidation of light metallic alloys and micro-discharge intensity depending on pH of the electrolyte Surface & Coatings Technology. ,vol. 269, pp. 138- 144 ,(2015) , 10.1016/J.SURFCOAT.2015.02.026
J. Martin, P. Leone, A. Nominé, D. Veys-Renaux, G. Henrion, T. Belmonte, Influence of electrolyte ageing on the Plasma Electrolytic Oxidation of aluminium Surface & Coatings Technology. ,vol. 269, pp. 36- 46 ,(2015) , 10.1016/J.SURFCOAT.2014.11.001
A. Hamdan, C. Noel, F. Kosior, G. Henrion, T. Belmonte, Dynamics of bubbles created by plasma in heptane for micro-gap conditions Journal of the Acoustical Society of America. ,vol. 134, pp. 991- 1000 ,(2013) , 10.1121/1.4812255
E. Matykina, R. Arrabal, P. Skeldon, G.E. Thompson, P. Belenguer, AC PEO of aluminium with porous alumina precursor films Surface & Coatings Technology. ,vol. 205, pp. 1668- 1678 ,(2010) , 10.1016/J.SURFCOAT.2010.05.014
Li Chen, Li Wang, Wen Fu, Evolution of active species and discharge sparks in Na2SiO3 electrolyte during PEO process Journal of Alloys and Compounds. ,vol. 509, pp. 7652- 7656 ,(2011) , 10.1016/J.JALLCOM.2011.04.130
Junghoon Lee, Yonghwan Kim, Wonsub Chung, Effect of Ar bubbling during plasma electrolytic oxidation of AZ31B magnesium alloy in silicate electrolyte Applied Surface Science. ,vol. 259, pp. 454- 459 ,(2012) , 10.1016/J.APSUSC.2012.07.065
Hongfei Guo, Maozhong An, Shen Xu, Huibin Huo, Formation of oxygen bubbles and its influence on current efficiency in micro-arc oxidation process of AZ91D magnesium alloy Thin Solid Films. ,vol. 485, pp. 53- 58 ,(2005) , 10.1016/J.TSF.2005.03.050
A. Melhem, G. Henrion, T. Czerwiec, J.L. Briançon, T. Duchanoy, F. Brochard, T. Belmonte, Changes induced by process parameters in oxide layers grown by the PEO process on Al alloys Surface & Coatings Technology. ,vol. 205, ,(2011) , 10.1016/J.SURFCOAT.2011.01.046
J. Martin, A. Melhem, I. Shchedrina, T. Duchanoy, A. Nominé, G. Henrion, T. Czerwiec, T. Belmonte, Effects of electrical parameters on plasma electrolytic oxidation of aluminium Surface & Coatings Technology. ,vol. 221, pp. 70- 76 ,(2013) , 10.1016/J.SURFCOAT.2013.01.029
R.O. Hussein, X. Nie, D.O. Northwood, Influence of process parameters on electrolytic plasma discharging behaviour and aluminum oxide coating microstructure Surface & Coatings Technology. ,vol. 205, pp. 1659- 1667 ,(2010) , 10.1016/J.SURFCOAT.2010.08.059