Results 91 to 100 of about 1,552,843 (326)
Laser–induced amorphous metal oxide is increasingly applied to enhancing interfacial bonding in metal–polymer hybrid materials. This work aims to explore physicochemical interactions between amorphous metal oxide and polymer to understand its bonding ...
Shuangshuang Li+3 more
doaj
The MCAS Way extends the MCAS concept of atomic orbitals to molecular bonding. There are many examples given for each bonding type. Part I: The MCAS atomic orbital concept. There are no spherical orbitals and spin pairing does not occur through spin reversal. Quantum numbers do not validate coexistence in identical space. Part II: Single bonds.
arxiv
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez+5 more
wiley +1 more source
Characterization of metal binding sites onto biochar using rare earth elements as a fingerprint
The ability of biochar to immobilize metals relies on the amount of functional groups at its surface but the contribution of each functional groups (e.g. carboxylic, phenolic) to metal bonding is poorly known. Using a new approach based on previous works
Olivier Pourret, David Houben
doaj +1 more source
Golden Sections of Interatomic Distances as Exact Ionic Radii and Additivity of Atomic and Ionic Radii in Chemical Bonds [PDF]
The Golden ratio which appears in the geometry of a variety of creations in Nature is found to arise right in the Bohr radius of the hydrogen atom due to the opposite charges of the electron and proton. The bond length of the hydrogen molecule is the diagonal of a square on the Bohr radius and hence also has two Golden sections, which form the cationic
arxiv
Incorporating nanosized silver into titanium for antimicrobial materials exploits the metastable miscibility gap between silver and titanium. Silver nanoparticles are synthesized via pulsed laser ablation in liquid. Silver addition refines the microstructure, increases hardness by 30%, and reduces Staphylococcus capitis microbial adhesion by 70%, with ...
Hamed Shokri+4 more
wiley +1 more source
Crossover between ionic/covalent and pure ionic bonding in magnesium oxyde clusters [PDF]
An empirical potential with fluctuating charges is proposed for modelling (MgO)_n clusters in both the molecular (small n) and bulk (n->infty) regimes. Vectorial polarization forces are explicitely taken into account in the self-consistent determination of the charges.
arxiv +1 more source
A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?
Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli+5 more
wiley +1 more source
Ionic liquids are defined as salts composed solely of ions with melting points below 100 °C. These remarkable liquids have unique and fascinating properties and offer new opportunities for science and technology. New combinations of ions provide changing
K. Fumino, S. Reimann, R. Ludwig
semanticscholar +1 more source
This study explores a process chain to produce dispersoid‐strengthened CuCr1Zr for applications requiring high strength and conductivity. Using gas‐atomized powder and copper‐plated alumina nanoparticles, additive manufacturing is performed via powder bed based additive manufacturing with green and red lasers, followed by heat treatment.
Heinrich von Lintel+7 more
wiley +1 more source