$ 22.99 · 4.8 (493) · In stock
The bronze patina is aesthetically pleasing and enhances the corrosion resistance of the metallic object. This corrosion product layer can develop naturally, through aging or artificially. However, artificial methods require substances that are hazardous to human health and the environment. In this study, a sustainable approach to patina development, based on the anodic polarization of a 85.5Cu-4.2Pb-4.5Sn-5.7Zn copper alloy immersed in 0.1 M NaCl + 0.01 M NaHCO3 were characterized using polarization curves, chronoamperometry, electrochemical impedance spectroscopy, electrochemical noise measurements, X-ray diffraction, and scanning electron microscopy. The results indicate that the anodic potential modifies the current density as well as the diffusion coefficient of oxygen associated with a thicker corrosion product layer. Electrochemical Impedance spectroscopy and electrochemical noise show that the porous behaviour and corrosion resistance increases as the potential becomes more anodic due to the formation of a protective layer. This behaviour corresponded with the results acquired by chronoamperometry. The surface characterization shows that the potential applied changes the surface morphology and composition of the corrosion products, being identified the crystalline phases of nantokite and atacamite although Cu, Cl, O, Zn, and Pb elements were also detected.
Sustainability, Free Full-Text, scp 1000 ubr
Sustainability, Free Full-Text
Premium Vector Environmental eco green environment day leaf sustainability word font doodle set collection icon
Sustainability, Free Full-Text
What is Sustainability? How Sustainabilities Work, Benefits, and Example
Sustainability, Free Full-Text
Sustainability, Free Full-Text, aware tradução google
Sustainability, Free Full-Text, driving simulator script
Sustainability, Free Full-Text, press f to pay respect origem
100+ Sustainability Pictures Download Free Images on Unsplash
PDF) Sustainability and Sustainable Development Research around the World
Sustainability, Free Full-Text, press f to pay respects tradução
Sustainability, Free Full-Text
The Complex Challenges of EV Charging Infrastructure Rollout - EE Times Asia, thlevel car charge
The Environments of Hayao Miyazaki – Establishing Shot, hayao miyazaki