Results 91 to 100 of about 37,675 (355)

MICROSTRUCTURE AND INTERFACIAL REACTIONS IN COPPER-CERAMIC MATERIALS

open access: yesLe Journal de Physique Colloques, 1985
Interfacial reactions, microstructure and microchemistry in a cordierite ceramic-copper system were examined. The results of diffusion and dissolution of Cu+ ions in the glass, precipitation of Cu2O and decomposition to metallic copper are presented.
Poetzinger, J., Risbud, S.
openaire   +2 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

Diffusion Bonding of Ti2AlNb Alloy and High-Nb-Containing TiAl Alloy: Interfacial Microstructure and Mechanical Properties

open access: yesMetals, 2018
In this study, reliable Ti2AlNb/high-Nb-containing TiAl alloy (TAN) joints were achieved by diffusion bonding. The effects of bonding temperature and holding time on the interfacial microstructure and mechanical properties were fully investigated.
Hong Bian   +5 more
doaj   +1 more source

Effect of Carbonation on the Interfacial Microstructure of Recycled Concrete

open access: yesDEStech Transactions on Materials Science and Engineering, 2017
The effect of carbonation on the micro hardness and width of interface transition zone of recycled concrete was studied, and the mechanism of carbonation reaction on recycled concrete was revealed from the micro level. The micro hardness of recycled concrete was measured before and after carbonization by means of micro hardness tester. The results show
Gongbing Yue, Qiuyi Li, Qianqian Li
openaire   +2 more sources

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel   +6 more
wiley   +1 more source

Nonthermal Plasma Reduction of Nickel Oxide Layers by Atmospheric Pressure Dielectric Barrier Discharge in Argon/Hydrogen

open access: yesAdvanced Engineering Materials, EarlyView.
This work explores the reduction of nickel oxide layers using dielectric barrier discharge plasma in an argon–hydrogen atmosphere. The results reveal a strong temperature dependence, enabling complete reduction of thick oxide layers at 200°C within seconds.
Maria Argirusi   +5 more
wiley   +1 more source

Biocomposite from polylactic acid and lignocellulosic fibers: structure-property correlations

open access: yes, 2013
PLA biocomposites were prepared using three corncob fractions and a wood fiber as reference. The composites were characterized by tensile testing, scanning electron (SEM) and polarization optical (POM) microscopy.
Renner, Károly   +4 more
core   +1 more source

Microstructure Evolution in a Solid Oxide Fuel Cell Stack Quantified with Interfacial Free Energy

open access: yes, 2021
Degradation of electrode microstructure is one of the key factors affecting long term performance of Solid Oxide Fuel Cell systems. Evolution of a multiphase system can be described quantitatively by the change in its interfacial energy.
Tomasz A. Prokop   +2 more
core   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa   +9 more
wiley   +1 more source

The Evolution of Interfacial Microstructure and Fracture Behavior of Short Carbon Fiber Reinforced 2024 Al Composites at High Temperature

open access: yesApplied Sciences, 2019
The short carbon fiber reinforced 2024 Al composites were fabricated through powder metallurgy. The effect of short carbon fiber content on the interfacial microstructure and fracture behavior of the composites at different temperatures were investigated.
Chi Zhang   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy