Results 91 to 100 of about 536,254 (376)

Wire‐Laser‐Directed Energy Deposition of Ti‐6Al‐4V Alloy Under Vacuum: Effect of Substrate Preheating on the Refinement of Prior‐β Grain Structure

Advanced Engineering Materials, EarlyView.
Microstructural evolution of Laser beam Direct Energy Deposition (DED‐LB)/Ti64, showing changes in microstructure after employing a preheated build platform, as evaluated by both optical microscopy and scanning electron microscopy/electron backscatter diffraction (SEM/EBSD), highlighting changes in grain morphology, the formation of equiaxed grains ...
Haneen Daoud, Agata Kulig, Kim Schmidt, Johannes Weiser, Maximilian Fichtl, Andrey Prihodovsky, Uwe Glatzel   +6 more
wiley   +1 more source

Enhancing the Fluorescence and Antimicrobial Performance of Carbon Dots via Hypochlorite Treatment

Nanomaterials
This paper presents a simple, post-synthesis treatment of carbon dots (C-dots) that relies on the oxidizing activity of sodium hypochlorite to induce surface oxidation, etching and pronounced structural rearrangements. The thus treated C-dots (ox-C-dots)
Spyridon Gavalas, Mohammed S. Beg, Ella N. Gibbons, Antonios Kelarakis   +3 more
doaj   +1 more source

Genesis and Propagation of Fractal Structures During Photoelectrochemical Etching of n-Silicon [PDF]

, 2020
The genesis, propagation, and dimensions of fractal-etch patterns that form anodically on front- or back-illuminated n-Si(100) photoelectrodes in contact with 11.9 M NH₄F(aq) has been investigated during either linear-sweep voltammetry or when the ...
Lewerenz, Hans-Joachim, Lewis, Nathan S., Lublow, Michael, Papadantonakis, Kimberly M., Richter, Matthias H.   +4 more
core  

Microstructural Evolution and Mechanical Performance of Plasma‐Assisted Hybrid Friction Stir Welded Dissimilar Aluminum–Copper Joints

Advanced Engineering Materials, EarlyView.
Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi, Pankaj Shrivastava, Ganesh Chouhan, Velaphi Msomi   +3 more
wiley   +1 more source

Enhancing Fatigue Performance by Tuning of Residual Stresses in Welded Joints through Nanometallic Multilayer

Advanced Engineering Materials, EarlyView.
This study investigates the fundamental mechanisms of a novel postweld treatment that significantly enhances fatigue performance through engineered residual stress (RS) states. A multiscale approach correlates tensile RS in the nanometallic multilayer coating with corresponding compressive RS in the steel substrate, thereby reducing localized stress ...
Niclas Spalek, Guilherme Abreu Faria, Anton Davydok, Marcus Rutner   +3 more
wiley   +1 more source

Improved photoetching fabrication method [PDF]

, 1972
Photoetching method producing well-defined lines with minimum undercutting was developed for etching coolant passages in nickel sheet. Phosphate coating is applied over conventional silver plate maskant and phosphoric acid solution is used to remove ...
Kistler, C. L.
core   +1 more source

Controlling the Intrinsic Josephson Junction Number in a $\mathbf{Bi_2Sr_2CaCu_2O_{8+\delta}}$ Mesa

, 2004
In fabricating $\mathrm{Bi_2Sr_2CaCu_2O_{8+\delta}}$ intrinsic Josephson junctions in 4-terminal mesa structures, we modify the conventional fabrication process by markedly reducing the etching rates of argon ion milling. As a result, the junction number
Ji, Zheng-Ming, Kang, Lin, Wu, Pei-Heng, Xu, Wei-Wei, You, Li-Xing   +4 more
core   +2 more sources

Etching-assisted femtosecond laser modification of hard materials

Opto-Electronic Advances, 2019
With high hardness, high thermal and chemical stability and excellent optical performance, hard materials exhibit great potential applications in various fields, especially in harsh conditions.
Xue‐Qing Liu, B. Bai, Qidai Chen, Hongbo Sun   +3 more
semanticscholar   +1 more source

Fabrication of Multifunctional FeSi Gyroid Lattice Composites via Additive Manufacturing and Polymer Infiltration

Advanced Engineering Materials, EarlyView.
A two‐step approach combining laser powder bed fusion of FeSi electrical steel with Bakelite infiltration enables the fabrication of multifunctional gyroid lattice composites. The resulting structures exhibit high strength, magnetic anisotropy, and complete polymer infiltration, demonstrating a simple and scalable route toward lightweight, mechanically
Angelo F. Andreoli, Mayumi A. Nakahashi, Vitor E. Pinotti, Felipe O. C. Bernardo, Lidiane C. Costa, Francisco G. Coury, Ronei C. de Oliveira, Adilson J. A. de Oliveira, Carlos E. H. Ventura, Piter Gargarella   +9 more
wiley   +1 more source

Anisotropic etching of β-Ga2O3 using hot phosphoric acid

Applied Physics Letters, 2019
We report a systematic investigation on the anisotropic etching behavior of β-Ga2O3. A wagon wheel pattern was designed and fabricated on (010)-oriented β-Ga2O3 substrates.
Yuewei Zhang, Akhil Mauze, J. Speck
semanticscholar   +1 more source