CrN thin films are deposited on stainless steel (AISI-304) substrate using pulsed DC magnetron sputtering in a mixture of nitrogen and argon plasma. Two set samples prepared. The first sample is treated at different powers (100 W to 200 W) (95%) (5%). second concentrations (5% 20%) (95% 80%) for constant power (150 W). X-ray diffraction (XRD) analysis exhibits the development new phases related compounds. crystallinity varies by varying applied content. Crystallite size residual stresses...

Mechanisms of Ni ablation in vacuum and atmosphere at various fluences ranging from to are studied by using a KrF excimer laser. The formation conical microstructures, ripples, large-sized irregular shaped cavities pits is found. It shown that no new phases formed the case vacuum, while nitrides nitro-oxides appear environment. microhardness analysis targets irradiated shows decreasing trend with increasing fluence, whereas environment, monotonic increase hardness fluence observed.

Laser irradiation effects on surface, structural and mechanical properties of Al–Cu–Mg alloy (Al–Cu 2024) have been investigated. The specimens were irradiated for various fluences ranging from 3.8 to 5.5 J/cm2 using an Excimer (KrF) laser (248 nm, 18 ns, 30 Hz) under vacuum environment. surface modifications the targets investigated by scanning electron microscope (SEM) X-ray diffractometer (XRD), respectively. SEM analysis reveals formation micro-sized craters along growth periodic...

Micro/nano structuring of KrF Excimer laser-irradiated Aluminum (Al) has been correlated with laser-produced structural and mechanical changes. The effect non-reactive Argon (Ar) reactive Oxygen (O2) environments on the surface, characteristics nano-second pulsed laser-ablated revealed. laser pulse duration 20 ns, central wavelength 248 nm repetition rate was utilized for this purpose. Exposure targets carried out 0.86, 1, 1.13 1.27 J·cm−2 fluences in ambient at a pressure 100 torr. A...

The surface, structural, and mechanical properties of zirconium after irradiation with Ti: sapphire laser (800 nm, 30 fs, 1 kHz) have been investigated. targets were exposed for a varying number pulses ranging from 500 to 2000 at fixed fluence 3.6 J/cm2 corresponding an intensity 1.2×1014 W/cm2 in ambient environments de-ionized water propanol. A scanning electron microscope (SEM) was employed investigate the surface morphology irradiated zirconium. SEM analysis shows formation various kinds...

Under certain conditions, ultrafast pulsed laser interaction with matter leads to the formation of self-organized conical as well periodic surface structures (commonly reffered as, induced structures, LIPSS). The purpose present investigations is explore effect fsec fluence and ambient environments (Vacuum & O2) on LIPSS Ti surface. morphology was investigated by scanning electron microscope (SEM). ablation threshold single multiple (N = 100) shots existence an incubation demonstrated SEM...

We study the effect of ambient – dry (air) and wet (propanol) environment on surface, structural mechanical properties zirconium samples after irradiation with a KrF excimer laser (wavelength , pulse duration repetition rate ). The are exposed to an increasing number pulses varying from 500 2000 in both media. Various features treated targets such as surface morphology, chemical composition, crystalline structure hardness analysed by complementary characterisation techniques, scanning...

Liquid-assisted laser ablation (LALA) has gained substantial attention as a method that can achieve desired chemical and physical properties. The fabrication of carbides (CdCO3), oxides (CdO), hydro-oxides (Cd(OH)2) on Cd surfaces make them more useful in industrial biomedical applications due to the enhancement their For this purpose, LALA Cadmium (Cd) is performed using KrF Excimer (248 nm, 20 ns) at varying numbers pulses from 500 2000 constant fluence (3.6 Jcm−2) deionized water (DI)...

The effect of variation excimer laser fluences on the surface structuring titanium (Ti) targets has been investigated. KrF (λ = 248 nm, t 20 ns, repetition rate Hz) employed for this purpose. were irradiated various ranging from 0.86 J cm−2 to 1.27 under vacuum condition. Various diagnostic techniques like scanning electron microscope (SEM), atomic force (AFM), and X-ray diffraction (XRD) have utilized investigate topography structural changes ablated targets. SEM analysis reveals formation...

Brass targets were irradiated with various laser pulses of Excimer ranging from 1200 to 3000 for constant fluence 3.4 J/cm2 in oxygen atmosphere (100 Torr). The surface morphology and crystallographic analyses performed by using Scanning Electron Microscope (SEM) X-Ray Diffractometer (XRD). SEM analysis reveals the formation laser-induced micro-sized cavities, bumps, cones wave-like ridges non-uniform shape density distribution. These features are formed all number pulses; however increasing...

AbstractThe effect of laser pulses on surface morphology, chemical composition and crystallinity titanium samples after irradiation in ethanol environment has been investigated. KrF Excimer (248 nm, 20 ns Hz) was employed for this purpose. Targets were exposed various number ranging from 500 to 2000 ambient at a fluence 3.6 J/cm2. In order explore the modification crystallinity, scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) diffraction (XRD) techniques...

In the present study KrF Excimer laser has been employed to irradiate Cadmium (Cd) targets for various number of pulses 500, 1000, 1500 and 2000, at constant fluence 3.6 J cm-2. Scanning Electron Microscopy (SEM) analysis was utilized reveal formation induced nano/micro structures on irradiated target surfaces. SEM results show generation cavities, cracks, micro/nano wires/rods, wrinkles along with re-deposited particles during irradiation in air, whereas subsurface boiling, pores, cavities...