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Showing 1 to 20 of 279 for “"anodic"”.
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Anodic films on Bismuth
… the nucleation, growth and defect structure of anodic oxide films formed on bismuth in aqueous electrolytes. The early stages in the formation of continuous anodic layers of bismuth oxide were studied using the technique of cyclic voltammetry. During this period, the oxide, Bi2O3, covered the …
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Characterization of anodic bonding
Anodic bonding is a common process used in MicroElectroMechanical Systems (MEMS) device fabrication and packaging. Polycrystalline chemical vapor deposited (CVD) silicon carbide (SiC) is emerging as a new MEMS device and packaging material because of its excellent material properties including high …
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The anodic oxidation of metals
… Optical and electical measurements during the anodic oxidation of nickel have also been made: The results of these measurements indicate that the behavior of passive nickel is more complicated than that of passive iron. Electrical results show that the form of the equation relating the current …
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Porous Aluminum-Oxide Coatings by Anodic Spark Deposition
Made available in DSpace on 2014-12-14T15:24:00Z (GMT). No. of bitstreams: 1 7709222.pdf: 6578359 bytes, checksum: b9cda3c2f7106af6910349246a45062d (MD5) Previous issue date: 1976
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Solution for a modular die-level anodic bonder
Anodic bonding is a common way to package silicon with Pyrex. The anodic bonding process requires high temperature, voltage, and moderate pressure to occur. Often, there are also expectations of alignment of features for things such as power or material delivery. The following thesis proposes a …
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The catalytic activity of anodic oxides on aluminum
The dehydration of isopropanol over anodic oxides was studied. The catalytic activity of the anodic oxides prepared in phosphoric, sulfuric, and oxalic acid was compared to the activity of ν-Al₂O₃. The effect of various thermal treatments on the catalytic activity was examined. IR spectroscopy …
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The anodic behavior of zinc in aqueous salt solutions
… recent years.</p> <p>The basic mechanism of the anodic dissolution of metals such as zinc, cadmium, and magnesium in salt solution is not completely known. Many mechanisms have been proposed by different investigators but evidence is still lacking which would allow one to draw reliable …
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Anodic Metal Dissolution In Haloaluminate Molten Salts/Ionic Liquids
… of the alcl3-etmeimcl ionic liquid, and the anodic transfer coefficients were close to zero in both cases. Surprisingly, the kinetic results were independent of the al grain size. The anodic dissolution of copper was also investigated in the alcl3-etmeimcl ionic liquid. A kinetic analysis of …
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Anodic dissolution and electropolishing of copper in phosphoric acid
The present work deals with the phenomena associated with the electrochemical dissolution of Cu in phosphoric acid. The investigation employs not only standard electrochemical methods, but also the purely physical methods of microscopy and schlieren analysis.
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The anodic dissolution of covellite in acidic, chloride solutions
An electrochemical study was conducted on a stationary, synthetically produced, covellite electrode in acidic, chloride solutions at ambient conditions to investigate the dissolution behaviour of the mineral over a surface potential range from the open circuit potential (OCP) to about 0.62 V (vs. …
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Porous anodic aluminum oxide scaffolds; formation mechanisms and applications
Nanoporous anodic aluminium oxide (AAO) can be created with pores that self-assemble into ordered configurations. Nanostructured metal oxides have proven to be very useful as scaffolds for growth of nanowires and nanotubes with tunable diameters and with tight diameter distributions. For 50 years, …
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Anodic dissolution of zinc in potassium iodide-potassium iodate solutions
"The anodic dissolution of Zn was studied in KI-KIO₃ solutions at 25ºC. In I⁻ solutions, it was found that the apparent valence of Zn ions going into solution is approximately two. Smaller values are obtained in IO₃⁻ solutions, with the most pronounced changes occurring in the higher …
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The colouring, sealing and abrasion resistance of anodic oxide coatings
… and sealing processes. The quality of the anodic oxide film is determined by assessment tests. The use of a nitric acid ‘predip’ on soft films was shown to dissolve a soft outerlayer. A new admittance test was devised in which the ‘drift’, Y, was measured using 33%, nitric acid. This test …
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Anodic Deposition and Cathodic Stripping of Iron in Acetate Medium
Made available in DSpace on 2014-12-10T23:01:08Z (GMT). No. of bitstreams: 1 7115011.pdf: 2941996 bytes, checksum: 383d8bd146a82f576d71dd255d780b77 (MD5) Previous issue date: 1970
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Study of trace metals in natural water using anodic stripping voltammetry.
Abstract not provided.
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Intramolecular Anodic Olefin Coupling Reactions: Synthesis Of Nitrogen- And Oxygen-Heterocycles
Anodic oxidation has been shown to be a powerful method for initiating umpolung reactions that allow the coupling of two nucleophilic functional groups. Most of the work in this area concentrates on making carbon-carbon bond. Hence, the reactions are usually terminated with olefin nucleophiles. The …
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Synthesis and Characterization of Nanostructures in Porous Anodic Aluminum Oxide Templates
<p> <p>In this study, template-based methods are used for the fabrication of various nanostructures such as nandots, nanorods, nanowires, nanotubes, and core-shell structures. Porous alumina membranes were employed as templates and metal nanostructures were synthesized in the templates by …
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