Ultra-short pulse simulation for characterising oxide layer formation on stainless steel during μECM

2020 ◽  
Vol 31 ◽  
pp. 370-376
Author(s):  
Lucian Hotoiu ◽  
Johan Deconinck ◽  
Carl Diver ◽  
David Tormey
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Short Pulse ◽  
Layer Formation ◽  
Ultra Short Pulse

Temperature Dependence of Oxide Layer Formation on Hydrogen Isotope Retention in Type 316 Stainless Steel

2009 ◽  
Vol 56 (2) ◽  
pp. 799-803 ◽  
Author(s):  
Kenji Okuno ◽  
Sachiko Suzuki ◽  
Hirotada Ishikawa ◽  
Takumi Hayashi ◽  
Toshihiko Yamanishi ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Temperature Dependence ◽  
Oxide Layer ◽  
Hydrogen Isotope ◽  
Layer Formation ◽  
316 Stainless Steel

scholarly journals Corrosion Resistance of AISI 304 Stainless Steel Modified Both Femto- and Nanosecond Lasers

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 592
Author(s):  
Katarzyna M. Mroczkowska ◽  
Paulina Dzienny ◽  
Aleksander Budnicki ◽  
Arkadiusz J. Antończak
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Surface Layer ◽  
Chemical Composition ◽  
Short Pulse ◽  
304 Stainless Steel ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Short Pulse Duration ◽  
Ultra Short Pulse

This article is aimed to study the effect of laser treatment of AISI 304 stainless steel on the corrosion resistance and chemical composition of the surface layer. The samples were irradiated using two quite different laser sources: IPG Yb:glass fibre laser (τ = 230 ns, λ = 1062 nm) and Trumpf TruMicro Series 2020 fiber laser (τ = 260 fs–20 ps, λ = 1030 nm) that is, in both the long and ultra-short pulse duration regime. It allowed the observation of completely different microstructures and chemical composition of the surface layer. In this study, the morphology of the samples was accessed using both Keyence digital microscope and Olympus Lext 5000 profilometer. The corrosion resistance was examined in 3% NaCl solution using both potentiodynamic measurement and Electrochemical Impedance Spectroscopy. In order to examine the change in chemical composition of the surface layer, the X-ray photoelectron spectroscopy study was performed. Results show that the use of a long laser pulse contributes to the formation of a thin, tight, rich in chromium passive layer, which significantly improves corrosion resistance in comparison to the reference sample. Different behaviour is observed after irradiation with an ultra-short pulse duration laser.

Microstructural analysis of oxide layer formation in ferritic stainless steel interconnects

2011 ◽  
Vol 28 (4) ◽  
pp. 285-289 ◽  
Author(s):  
Dong-Ik Kim ◽  
Seung Hee Hong ◽  
Madakashira P. Phaniraj ◽  
Heung Nam Han ◽  
Jae-Pyoung Ahn ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Ferritic Stainless Steel ◽  
Microstructural Analysis ◽  
Layer Formation

scholarly journals Properties of High-Frequency Sub-Wavelength Ripples on Stainless Steel 304L under Ultra Short Pulse Laser Irradiation

2011 ◽  
Vol 12 ◽  
pp. 99-104 ◽  
Author(s):  
V.S. Mitko ◽  
G.R.B.E. Römer ◽  
A.J. Huis in ‘t Veld ◽  
J.Z.P. Skolski ◽  
J.V. Obona ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Irradiation ◽  
Pulse Laser ◽  
High Frequency ◽  
Short Pulse ◽  
Pulse Laser Irradiation ◽  
Short Pulse Laser ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser ◽  
Sub Wavelength

Research on Micro Electrochemical Machining Based on Multifunction Machine Tool

2009 ◽  
Vol 628-629 ◽  
pp. 399-404
Author(s):  
Xiao Hai Li ◽  
Li Jie Zhao ◽  
Xin Rong Wang ◽  
X. Zhang ◽  
Zhen Long Wang
Keyword(s):  
Stainless Steel ◽  
High Speed ◽  
Short Pulse ◽  
Electrochemical Machining ◽  
304 Stainless Steel ◽  
Tool Electrode ◽  
Electrode Gap ◽  
Micro Ecm ◽  
Gap Control ◽  
Ultra Short Pulse

The research aims to develop an experimental equipment to carry out in depth research on micro electrochemical machining (micro-ECM). The mechanisms of ultra-short pulse current micro ECM are discussed. As a consequence, lower machining voltage, lower passivity electrolyte concentration, high frequency short pulse power supply and micro rotating tool electrode at high speed have been synthetically used to localize the dissolution area during micro-ECM. The machining gap can be kept at a very small value, and the better resolution of machined shape is achieved by using a novel designed electrode gap control system and the effective utilization of ECM for micromachining is fulfilled. The experiments on microstructure by micro-ECM milling on stainless steel plate are conducted. The micro structures milled on 304 stainless steel foil with 300μm thickness with high precision and high aspect ratio are achieved, and the width of micro beam is about 60μm.

Silicon Thinning using Ultra-Short Pulse Laser Ablation

2004 ◽  
Author(s):  
F. Beaudoin ◽  
P. Perdu ◽  
C. DeNardi ◽  
R. Desplats ◽  
J. Lopez ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Sample Preparation ◽  
Pulse Laser ◽  
Pulse Laser Ablation ◽  
Short Pulse ◽  
Special Care ◽  
Short Pulse Laser ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser

Abstract Ultra-short pulse laser ablation is applied to IC backside sample preparation. It is contact-less, non-thermal, precise and can ablate the various types of material present in IC packages. This study concerns the optimization of ultra-short pulse laser ablation for silicon thinning. Uncontrolled silicon roughness and poor uniformity of the laser thinned cavity needed to be tackled. Special care is taken to minimize the silicon RMS roughness to less than 1µm. Application to sample preparation of 256Mbit devices is presented.

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