Spectroscopic investigations of CO and CO2 laser induced aluminum welding plasmas

Martin Schellhorn; A. Eichhorn

doi:10.1117/12.270121

4 April 1997 Spectroscopic investigations of CO and CO₂ laser-induced aluminum welding plasmas

Martin Schellhorn, A. Eichhorn

Proceedings Volume 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1997) https://doi.org/10.1117/12.270121
Event: XI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, 1996, Edinburgh, United Kingdom

Abstract

Average electron densities and temperatures were measured for both carbon and carbon-dioxide laser induced aluminum welding plasmas using spectroscopic techniques. The plasma temperature is smaller in the case of carbon laser welding, whereas the electron density is slightly higher. Therefore the absorption length (inverse bremsstrahlung) of the carbon laser radiation in the welding zone is a factor of 2 to 7 longer. This is the reason for the better weld seam quality obtained with the carbon laser.

Citation Download Citation

Martin Schellhorn and A. Eichhorn "Spectroscopic investigations of CO and CO₂ laser-induced aluminum welding plasmas", Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); https://doi.org/10.1117/12.270121

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