Parametric optimization of pulsed laser ablation on stainless steel for improving corrosion resistance by Taguchi method

2018 ◽  
Vol 6 (2) ◽  
pp. 026533
Author(s):  
Sze Ney Chan ◽  
Wai Yin Wong ◽  
Rashmi Walvekar ◽  
Abdul Amir H Kadhum ◽  
Mohammad Khalid
2019 ◽  
Author(s):  
Norbert Ackerl ◽  
Gabriela Fisch ◽  
Janko Auerswald ◽  
Konrad Wegener

Ultra-short pulsed laser ablation of stainless steel is accompanied by the evolution of different microstructures. Depending on the fuence, accumulated energy and number of laser passes cones from impurities, laser induced periodic surface structures and conelike protrusion (CLP) evolve at the surface. These often unwanted morphologies can be inhibited by carefully choosing the strategy and laser parameters. Here, the identifed region shows a small processing window fordesigned 515nm sub 1 ps ablation leading to low surface roughness. CLP are still not well understood and here a pre-cursor structure is reported. Subsequently, the CLP growth is grain orientation and polarization dependent and studied in more depth. Preferentially, CLP start to evolve at the (101) grain orientations with linear polarized laser radiation. Moreover, a nanoindentation study reveals robust mechanical properties, which could be beneficial for tribology applications in the hydrodynamic regime.


2019 ◽  
Vol 21 (8) ◽  
pp. 1900193 ◽  
Author(s):  
Jun‐Jie Zhang ◽  
Liang Zhao ◽  
Andreas Rosenkranz ◽  
Cheng‐Wei Song ◽  
Yong‐Da Yan ◽  
...  

2002 ◽  
Vol 752 ◽  
Author(s):  
Zhongsheng Deng ◽  
Thomas J. Pisklak ◽  
Kenneth J. Balkus

ABSTRACTThin films of zeolites including silicalite-1, mordenite and UTD-18 have been prepared on stainless steel foil via pulsed laser deposition (PLD). Laser ablation of as-synthesized zeolite targets onto stainless steel foil followed by a post hydrothermal treatment results in partially oriented zeolite thin films. SEM, XRD were used to characterize the zeolite thin films. Preliminary results for multilayercoatings of different zeolites will also be presented.


2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Norbert Ackerl ◽  
Gabriela Fisch ◽  
Janko Auerswald ◽  
Konrad Wegener

2005 ◽  
Vol 55 (7) ◽  
pp. 845-852 ◽  
Author(s):  
K. Nomura ◽  
Y. Yamada ◽  
R. Tomita ◽  
T. Yajima ◽  
K. Shimizu ◽  
...  

Author(s):  
M. Grant Norton ◽  
C. Barry Carter

Pulsed-laser ablation has been widely used to produce high-quality thin films of YBa2Cu3O7-δ on a range of substrate materials. The nonequilibrium nature of the process allows congruent deposition of oxides with complex stoichiometrics. In the high power density regime produced by the UV excimer lasers the ablated species includes a mixture of neutral atoms, molecules and ions. All these species play an important role in thin-film deposition. However, changes in the deposition parameters have been shown to affect the microstructure of thin YBa2Cu3O7-δ films. The formation of metastable configurations is possible because at the low substrate temperatures used, only shortrange rearrangement on the substrate surface can occur. The parameters associated directly with the laser ablation process, those determining the nature of the process, e g. thermal or nonthermal volatilization, have been classified as ‘primary parameters'. Other parameters may also affect the microstructure of the thin film. In this paper, the effects of these ‘secondary parameters' on the microstructure of YBa2Cu3O7-δ films will be discussed. Examples of 'secondary parameters' include the substrate temperature and the oxygen partial pressure during deposition.


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