Results 71 to 80 of about 570,654 (314)

Ho-doped silica fibre laser in-band pumped by a Tm-doped fibre laser [PDF]

, 2009
Over the last few years there has been increasing interest in power-scaling of fibre-based sources operating in the eyesafe two-micron wavelength regime driven by a range of applications. Much of this interest has focussed on Tm-doped silica fibres which
J. W. Kim, Clarkson, W.A., J. K. Sahu, W. A. Clarkson, Kim, J.W., Boyland, A.J., A. Boyland, Sahu, J.K.   +7 more
core   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Radiation Induced Surface Modification of Nanoparticles and Their Dispersion in the Polymer Matrix

Nanomaterials, 2020
Polymer grafted inorganic nanoparticles attract significant attention, but pose challenges because of the complexity. In this work, a facile strategy to the graft polymer onto the surface of nanoparticles have been introduced.
Zhiang Fu, Xiaoying Gu, Lingmin Hu, Yongjin Li, Jingye Li   +4 more
doaj   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

A Comparison of the Influence of Kraft Lignin and the Kraft Lignin/Silica System as Cell Carriers on the Stability and Efficiency of the Anaerobic Digestion Process

Energies, 2020
This study compares the effects of pure kraft lignin and the kraft lignin/silica system (1:4 by weight). The comparative analysis of the physicochemical properties of both carriers showed that the kraft lignin/silica system was characterised by better ...
Agnieszka A. Pilarska, Agnieszka Wolna-Maruwka, Alicja Niewiadomska, Krzysztof Pilarski, Artur Olesienkiewicz   +4 more
doaj   +1 more source

Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash [PDF]

Anais da Academia Brasileira de Ciências, 2019
: Waterborne polyurethanes (WPUs) are interesting materials for coatings when compared to solvent-based polyurethanes, once that reducing the concentration of volatile organic compounds that are harmful for human health and the environment. However, the
WESLEY F. MONTEIRO, GABRIELA M. MIRANDA, RAFAEL R. SOARES, CLÁUDIA A.B. DOS SANTOS, MAURÍCIO S. HOFFMANN, CARLOS L.P. CARONE, VIVIANE DE LIMA, MILTON F. DE SOUZA, ADRIANO D. CAMPANI, SANDRA M.O. EINLOFT, JEANE E. DE LIMA, ROSANE A. LIGABUE   +11 more
doaj   +1 more source

Characterisation of metal organic frameworks for adsorption cooling [PDF]

, 2012
Silica gel/water adsorption cooling systems suffer from size, performance and cost limitations. Therefore, there is a need for new adsorbent materials that outperform silica gel.
Mahmoud, Saad, Elsayed, A., Rezk, A., Rezk, Ahmed, Al-Dadah, R., Al-Dadah, Raya, Elsayed, Ahmed, Mahmoud, S.   +7 more
core   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Influence of low amounts of nanostructured silica and calcium carbonate fillers on the large-area dielectric breakdown performance of bi-axially oriented polypropylene [PDF]

, 2014
Influence of low amounts (1.0-2.0wt-%) of nanostructured silica and calcium carbonate fillers on the large area dielectric breakdown performance of bi-axially oriented polypropylene (BOPP) is analyzed.
S. Virtanen, K. Lahti, I. Rytoluoto, Virtanen, Suvi, M. Pettersson, Karttunen, Mikko, Lahti, Kari, M. Koponen, M. Karttunen, Rytöluoto, Ilkka, Rytöluoto, Ilkka; id_orcid, Koponen, M., Pettersson, Mika, Koponen, Matti   +13 more
core   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source