Understanding surface reactivity is crucial in many fields, going from heterogeneous catalysis to materials oxidation and corrosion. In order decipher the reactions of ZrB2 exposed harsh environment aerospace components, chemical activity both Zr- B-surfaces predicted compared by using density functional theory nudged elastic band methods. particular adsorption, dissociation diffusion O2, CO H2...

single crystal zno microrods are deposited on the surface of zn plate through corrosion of zn plate by h2o2, which is a green neutral reagent and easy to transform to h2o and o2. the structure and morphology of the obtained zno microrods were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), transmission electron microscopy (tem) and electron diffraction. a thermodyn...

Silk Fibroin-Coated Mg Implants for Bone Repair Engineering In article number 2101724, Hui Fang, Chenxi Wang, and co-workers demonstrate an effective O2/N2 hybrid plasma activation technology to modify alloy, achieving a robust organic protein/inorganic metal interface. The silk fibroin-coated implants possess significantly improved adhesion, anti-corrosion biocompatibility, which expands the b...

The effect of plasma nitriding and oxidation on the corrosion resistance AISI 304 type stainless steel in LiBr/H2O CaCl2-LiBr-LiNO3-H2O mixtures at 80 °C has been evaluated by using potentiodynamic polarization curves electrochemical impedance spectroscopy techniques (EIS). Steel was treated 500 during 8 h under different atmospheres, nominally 20% N2 + 80% H2, 100% O2. X-ray diffraction analys...

The oxidation of copper catalysts during ethylene epoxidation was characterized using in situ photoemission spectroscopy and electron microscopy. Gas chromatography, proton-transfer reaction mass spectrometry and electron-ionization mass spectrometry were used to characterize the catalytic properties of the oxidized copper. We find that copper corrodes during epoxidation in a 1 : 1 mixture of o...

Technologically important small band gap (<2 eV) semiconductors must be stabilized against corrosion or passivation in aqueous electrolytes before they can be used as photoelectrodes that directly produce fuels from sunlight. In addition, incorporation of electrocatalysts on the surface of the photoelectrodes is required for efficient oxidation of H2O to O2(g) and reduction of H2O or H2O and CO...

A two-dimensional numerical model incorporating solid mechanics, electrochemistry, mass diffusion, and ion migration processes is developed to investigate the load effect on crevice corrosion. The a transient of corrosion occurring in cracks 304 stainless steel dilute NaCl solution, interaction between stress electrochemical was considered. By solving multiphysical coupling COMSOL, applied crac...

The electrolytic reduction of a spent oxide fuel involves the liberation oxygen in molten salt LiCl–Li2O electrolyte, which creates corrosive environment for typical structural materials. In this study, corrosion behaviors Al–Y-coated specimens Li kept under an oxidizing atmosphere at 650 °C 72 and 168 h were investigated. weight loss fraction coated specimen to bare was approximately 60% 3% Li...

Natural cases of dealloying or stress-corrosion cracking in copper alloys normally occur in oxygenated solutions, where the cathodic reactant is O2 or Cu2+. Within cavities or under deposits, the local environment is enriched in cuprous ions (e.g. CuCl2-, Cu (NH3)2+) and the potential is close to the Cu/Cu+ equilibrium. Such conditions can be simulated macroscopically by stirring powdered Cu2O ...