Results 51 to 60 of about 164,990 (313)

Corrosion performance of laser post-treated cold sprayed titanium coatings [PDF]

, 2011
The recent development of cold spray technology has made possible the deposition of highly reactive,oxygen sensitive materials, such as titanium, without significant chemical reaction of the powder, modificationof particle microstructure and with minimal
Marrocco, T., D. G. McCartney, Shipway, P. H., McCartney, D. G., Hussain, Tanvir, P. H. Shipway, T. Marrocco, T. Hussain   +7 more
core   +1 more source

Peripheral Neutrophil Activation and Extracellular Trap Formation in Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
Markers of neutrophil activation are increased in plasma during ALS, and markers of NET formation associate with ALS survival. ABSTRACT Objectives Peripheral neutrophil levels in amyotrophic lateral sclerosis (ALS) inversely correlate with survival, suggesting a role for neutrophils in disease progression.
Lillia A. Baird, Haley McQuown, Jihyun Park, Samuel J. Teener, Ian F. Webber‐Davis, Andrew D. Carter, Dae‐Gyu Jang, Eva L. Feldman, Stephen A. Goutman, Benjamin J. Murdock   +9 more
wiley   +1 more source

Laser acceleration of monoenergetic protons via a double layer emerging from an ultra-thin foil

, 2009
We present theoretical and numerical studies of the acceleration of monoenergetic protons in a double layer formed by the laser irradiation of an ultra-thin film.
Shukla, Padma K., Liu, Chuan S.,, Sagdeev, Roald Z.,, Eliasson, Bengt,, Liu, Chuan S., Shao, Xi, Shao, Xi,, Sagdeev, Roald Z., Eliasson, Bengt, Shukla, Padma Kant,   +9 more
core   +2 more sources

Laser-Induced Ion Formation and Electron Emission from a Nanostructured Gold Surface at Laser Fluence below the Threshold for Plasma Formation

Nanomaterials, 2023
The laser formation of positive and negative ions on a nanostructured metal surface is observed at laser fluence below the plasma formation threshold.
Andrey Pento, Ilya Kuzmin, Viacheslav Kozlovskiy, Lei Li, Polina Laptinskaya, Yaroslav Simanovsky, Boris Sartakov, Sergey Nikiforov   +7 more
doaj   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source

Laser Treatment of Plasma Spraying Alloyed Coatings [PDF]

Engineering and Technology Journal, 2012
Ni23Cr6Al0.4Y plasma sprayed coating on nimonic75 substrate was remelted using a 1 kW continues CO2 laser. The topography, microstructure, phases and chemical analysis of plasma sprayed and laser melted regions were examined using various techniques ...
Mohammed Jasim Kadhim, Sami Ibrahim Jaffar, Eman Adnan Anon   +2 more
doaj   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Desenvolvimento e construção de um laser de CO2 [PDF]

, 1992
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.Neste trabalho nós estudamos a possibilidade de excitarmos um laser de CO2 com microondas através de ondas eletromagnéticas de superfície.
Cinelli, Milton Jose
core  

Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaning

Nuclear Fusion
Low-pressure plasma cleaning technology is currently regarded as a highly promising method for the effective in-situ removal of surface contaminants from large-aperture optical components (LAOC) (⩾430 mm) in laser fusion facilities. After a long cleaning,
Rongqi Shen, Yuhai Li, Zixu Wang, Laixi Sun, Xiaodong Yuan, Xiang Dong, Xia Xiang, Bo Li, Xujie Liu, Xueshi Xu, Tingting Wang, Qingshun Bai   +11 more
doaj   +1 more source