کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
744642 894395 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the interaction between nanoparticles and high brilliant laser radiation during μs-pulses on the ablation process of metals
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Influence of the interaction between nanoparticles and high brilliant laser radiation during μs-pulses on the ablation process of metals
چکیده انگلیسی

A characteristic of the laser ablation process of metals with high brilliant radiation is a significant formation of nanoparticles within the vapour plume. Due to the interaction between the incoming radiation and the particles, the intensity is attenuated at the workpiece. This leads to a decrease of the ablation rate and the related ablation velocity. In order to verify the influence of the interaction between nanoparticles and high brilliant radiation on the ablation process, experimental and theoretical results of the laser ablation process of stainless steel with a single mode fiber laser are presented. For an ablation process with an intensity of 1.9×108 W/cm², it is shown that the average particle size is 9 nm. Within a further time-dependent analysis of the correlation between particle formation and ablation velocity, the beam of a test laser is directed through the vapour plume and the angle-dependent scattered radiation is detected. The results point out that a decrease of the ablation velocity corresponds with an increasing of the particle density within the ablation plume.


► Ablation of stainless steel using high brilliant laser source.
► The interaction between nanoparticles and the incoming laser radiation influences the process.
► Fluctuations of the ablation velocity in relation to the process time.
► Significant influence on remote laser processing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 50, Issue 5, May 2012, Pages 717–726
نویسندگان
, , , ,