Results 51 to 60 of about 190,893 (209)

Smart‐Release Ion‐Exchanged Ca‐Montmorillonite for Corrosion Protection of AA2024 Aluminium Alloy

Advanced Materials Interfaces, EarlyView.
Smart‐release anticorrosion pigments based on Zn‐ and Mn‐modified montmorillonite were developed by ion exchange of Ca‐montmorillonite and evaluated for the protection of AA2024 aluminium alloy in artificial acid rain. Both modified pigments provided effective corrosion inhibition, with Zn‐modified montmorillonite (Zn‐MMT) achieving an inhibition ...
Sergiy Korniy, Mariia Olena Danyliak, Ivan Zin   +2 more
wiley   +1 more source

Bidirectional Soft Catalysts for Improved Power Performance of Li‐S Batteries

Advanced Science, EarlyView.
A soft polymer‐metal catalyst is integrated into the binder to create a catalytically active microenvironment that accelerates bidirectional sulfur redox kinetics in lithium‐sulfur batteries. A model polyvinyl alcohol‐Cu catalyst enables high areal capacities at demanding current densities and stable cycling in pouch‐cell prototypes at 0.5 C, achieving
Maleesha M. Nishshanke, Petar Jovanovic, Swarit Dwivedi, Declan McNamara, Akshat Tanksale, Mahdokht Shaibani, Matthew Hill, Mainak Majumder   +7 more
wiley   +1 more source

Numerical modeling of temperature fields during friction stir welding of the AA5083 aluminum alloy

Frontier Materials & Technologies, 2023
One of the important parameters ensuring the production of a welded joint without continuity defects during friction stir welding is the provision of the required temperature in the metal bonding zone.
Igor N. Zybin, Mikhail S. Antokhin
doaj   +1 more source

Thermochemical Core–Shell Architecturing of Si‐SWCNT Composites for High‐Performance Li‐Ion Battery Anodes

Advanced Science, EarlyView.
A thermochemically engineered core–shell Si architecture is developed through the controlled evolution of a SWCNT‐coated Mg2Si precursor. The process simultaneously generates a nanoporous Si shell for strain accommodation and Li+ transport, a chemically anchored SiC interfacial layer for robust mechanical and electrical coupling, and a Mg‐containing Si
Dong Gyun Hong, Byeong Guk Kim, Jung‐Hyeok Park, Sunwoo Lee, Donghwi Cho, Jaeik Hyun, Ki‐Hun Nam, Youngoh Kim, Geon‐Woong Lee, Sunhye Yang, Seung Yol Jeong, Myungwoo Choi   +11 more
wiley   +1 more source

Strengthening Constitutive Motifs in Isotropic Fibrous Hydrogel for Exceptional Damage Resistance

Advanced Science, EarlyView.
An orientation‐free strategy is reported for fabricating damage‐resistant hydrogels by strengthening constitutive motifs in isotropic fibrous (IF) networks. Through nonsolvent quenching followed by salting‐out, IF networks are generated and their multiscale constituents are subsequently reinforced, yielding dense and crystalline isotropic nanofiber ...
Bolin Wan, Xule Yang, Liju Xu, Dong Qiu
wiley   +1 more source

High‐Performance Bio‐Based Epoxy Vitrimers and Composites: Synergizing Robustness and Reprocessability via Fractional Free Volume Regulation

Advanced Science, EarlyView.
In this work, two bio‐based epoxy monomers were designed to tune the dynamic network of a rigid–flexible hybrid epoxy through free‐volume control, achieving a synergy among high free volume, high cross‐linking density, and segmental mobility while balancing strength and toughness.
Kai Dong, Di Zhao, Chengji Zhao
wiley   +1 more source

THEORETICAL AND EXPERIMENTAL INVESTIGATION OF FRICTION STION STIR WELDING FOR COPPER ALLOY

Al-Qadisiyah Journal for Engineering Science, 2013
Friction stir welding (FSW) is a relatively new solid-state joining process. This joining technique is energy efficient. In particular, it can be used to join highstrength aerospace aluminum alloys and other metallic alloys that are hard to weld by ...
Nabeel Shallal Thamer, Ahmed Hadi Abood, Dr. Hani Aziz Ameen   +2 more
doaj  

Decoupling Quasi‐Solid‐State Sulfur Conversion Mechanisms in Weakly Solvating and Locally High Concentration Electrolytes

Advanced Energy Materials, EarlyView.
Weakly solvating CME–TTE and localized high‐concentration G2–TTE electrolytes redirect lithium–sulfur chemistry toward quasi‐solid‐state conversion through distinct coordination environments. Molecular dynamics and multimodal electrochemical and spectroscopic measurements show that G2–TTE couples multidentate solvent coordination, anion participation ...
Boyi Pang, Huanxin Li, Liam Bird, Yiming Guo, Bochen Li, Xiaoxia Guo, Roby Soni, Yi Zeng, Paul R. Shearing, Thomas S. Miller, Rhodri Jervis, Alexander J. Kibler, James B. Robinson   +12 more
wiley   +1 more source

Welding defects at friction stir welding

Metalurgija, 2015
The paper presents an overview of different types of defects at friction stir welding. In order to explain the reasons for their occurrence a short theoretical background of the process is given first. The main emphasis is on the parameters that influence the process. An energy supply based division of defects into three disjoint groups was used.
P. Podržaj, B. Jerman, D. Klobčar
openaire   +3 more sources

Cyclic Processability of Functional Liquid Crystalline Epoxy Networks via Dynamic Ester Bonding

Journal of Applied Polymer Science, EarlyView.
This work reports the successful reprocessing of liquid crystal epoxy networks through two distinct modes—welding of clean breaks and reconstitution from shredded material—without significant loss of functionality. Thermal and mechanical characterization shows stability in the shape memory behavior and glass transition temperature over multiple ...
Collin Pekol, Mohammad Husein, David J. Keffer, David P. Harper   +3 more
wiley   +1 more source