%0 Journal Article
%T Influence of Laser-Induced Bubble Formation on Laser Chemical Machining
%A Marcel Simons
%A Tim Radel
%A Raj Shanta Kajsaravally
%A Frank Vollertsen
%J Journal of Surface Engineered Materials and Advanced Technology
%P 21-33
%@ 2161-489X
%D 2020
%I Scientific Research Publishing
%R 10.4236/jsemat.2020.102002
%X Laser Chemical Machining (LCM) is a non-conventional processing method, which enables very accurate and precise ablation of metallic surfaces. Material ablation results from laser-induced thermal activation of heterogeneous chemical reactions between electrolytes and a metallic surface. However, when processing metallic surfaces with LCM, large fluctuations in ablation quality can occur due to rising bubbles. The for-mation of bubbles during laser chemical machining and their influence on the ablation quality has not been investigated. For a more detailed investigation of the bubbles, ablation experiments on Titanium and Ce-ramic under different thermal process conditions were performed. The experiments were recorded by a high-speed camera. The evaluation of the video sequences was performed using Matlab. The resulting bubbles were analyzed regarding their size and frequency. The results show that boil-ing bubbles formed on both materials during processing. Titanium also produces smaller bubbles, which can be identified as process bubbles ac-cording to their size. Furthermore, it was found that undisturbed laser chemical ablation can be achieved in the presence of a boiling process, since both boiling bubbles and process bubbles were detected during machining within the process window.
%K Micro Machining
%K Laser Micro Machining
%K Laser Chemical Removal
%K Nucleate Boiling
%K Highspeed Videography
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=98969