A Xe plasma Focussed Ion Beam instrument was used to prepare in-situ specimens for Atom Probe Tomography from a bulk sample of an aluminium 6XXX alloy. The nature and distribution precipitates solute clusters observed in the alloy are not differ between standard electropolishing methods preparation. Enabled by site specific specimen preparation, analysis α-Al(Fe,Mn)Si dispersoid shows segregati...

Since the introduction of engine-driven nickel-titanium (NiTi) instruments, attempts have been made to minimize or eliminate their inherent defects, increase their surface hardness/flexibility and also improve their resistance to cyclic fatigue and cutting efficiency. The various strategies of enhancing instrument surface include ion implantation, thermal nitridation, cryogenic treatment and el...

UNLABELLED Suspended micromachined porous silicon beams with laterally uniform porosity are reported, which have been fabricated using standard photolithography processes designed for compatibility with complementary metal-oxide-semiconductor (CMOS) processes. Anodization, annealing, reactive ion etching, repeated photolithography, lift off and electropolishing processes were used to release pa...

Abstract The electropolishing characteristic curves of rolled 8079 Al alloy in perchloric acid and ethanol solution from -25 °C to 25 are obtained. optimal conditions the with investigated by optical microscope. result shows that lower temperature is, longer time range voltage wider. Furthermore, calibration rate phase after is higher than 97% Electron Back-Scatter Diffraction. effect both cast...

It is now established that hexagonally ordered domain structures can be formed in anodic alumina films by repeated anodization and stripping of the porous oxide. We find that the domain size is a linear function of time and increases with temperature. The pore density is initially high but decreases with anodizing time, as dominant pores deepen. Very small pores exist in native oxide in air or ...

Abstract Electropolishing (EP) is a reliable post-processing method of the drilled metals for achieving high-quality surface finish with an appropriate material removal rate. This process has many applications due to its advantages such as improving quality by removing peaks on micro-scale. The aim most attempts this setting up optimum parameters obtain maximum Material Removal Rate (MRR) minim...

Abstract Selective laser melting is one of the additive manufacturing technologies that have been known for building various and complicated shapes. Despite numerous advantages technologies, they strongly influence microstructure typically show a relatively high surface roughness. In this study, maraging steel was produced by selective (SLM), its microstructure, hardness corrosion behavior befo...