Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ryusei Saeki"'
Publikováno v:
Nanomaterials, Vol 14, Iss 9, p 755 (2024)
Ni nanowire array electrodes with an extremely large surface area were made through an electrochemical reduction process utilizing an anodized alumina template with a pore length of 320 µm, pore diameter of 100 nm, and pore aspect ratio of 3200. The
Externí odkaz:
https://doaj.org/article/4597a872d43548b4ae536796423f6d62
Publikováno v:
Crystals, Vol 13, Iss 12, p 1654 (2023)
Metallic copper (Cu) and copper oxide (Cu2O) dual phase composite films were fabricated via a cathodic reduction process in an acidic aqueous solution dissolving polyethylene glycol (PEG) to investigate the structure and micro-Vickers hardness. By di
Externí odkaz:
https://doaj.org/article/61d68586040d45509a888565c3ca3eea
Publikováno v:
Journal of Materials Research and Technology, Vol 18, Iss , Pp 2735-2744 (2022)
Iron-chromium (Fe–Cr) alloy films were electrochemically synthesized from an aqueous solution containing N,N-dimethylformamide (DMF). The chromium content of the alloy films increased up to ca. 32 at%, with an increase in the cathodic overpotential
Externí odkaz:
https://doaj.org/article/1c9bb5364d364f69973b31442dd8f10b
Autor:
Ryusei Saeki, Takeshi Ohgai
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 4, Pp 8029-8040 (2020)
According to the potential–pH diagram for the Co2+–citrate–H2O system, Co2+–citrate complexes are stable at a pH ranging from 3 to 9. Titration curves and ultraviolet–visible absorption spectra confirm that the pH buffer associated with the
Externí odkaz:
https://doaj.org/article/4a5f5c626e27461391f29ad9575889ca
Publikováno v:
Materials Research Express, Vol 10, Iss 12, p 126515 (2023)
Nanocrystalline thick copper films with the thickness of ∼250 μ m were electrochemically synthesized from an acidic aqueous solution containing polyethylene glycol (PEG) with the average molecular weight of 3,000 to investigate the preferential cr
Externí odkaz:
https://doaj.org/article/93aece2313884a5394f1a68991ad07f6
Publikováno v:
Materials Research Express, Vol 10, Iss 4, p 046504 (2023)
Nanocrystalline nickel–cobalt (Ni–Co) binary alloy sheets were fabricated through electroforming in an acidic aqueous bath using exfoliation from a metallic titanium cathode. Cobalt content in Ni–Co alloy sheets ranged from 28.8 at% to 72.0 at%
Externí odkaz:
https://doaj.org/article/3e4a7261470846a1b346a7ad88225c62
Autor:
Ryusei Saeki, Takeshi Ohgai
Publikováno v:
Materials Research Express, Vol 9, Iss 2, p 026515 (2022)
The effect of glycine as a complexing agent on metal hydroxide formation, such as Co(OH) _2 and Cr(OH) _3 , was investigated based on potential-pH diagrams and titration curves for Co ^2+ -H _2 O and Cr ^3+ −H _2 O systems. Using a potentiostatic e
Externí odkaz:
https://doaj.org/article/c3715db24e734588ab679ea5aa2b7a42
Publikováno v:
Materials Research Express, Vol 9, Iss 4, p 046502 (2022)
Using a potentiostatic electrodeposition technique, nanocrystalline cobalt-molybdenum (Co-Mo) superalloys containing molybdenum oxide (MoO _X ) were synthesized from an aqueous solution containing citric acid. Molybdenum content in the alloys was con
Externí odkaz:
https://doaj.org/article/e0300546c8964b8da83fb654ae75b007
Autor:
Ryusei Saeki, Takeshi Ohgai
Publikováno v:
Results in Physics, Vol 15, Iss , Pp - (2019)
Cathode current efficiency for the electrodeposition of cobalt from an acidic aqueous solution, which took place in anodized aluminum oxide (AAO) nanochannels with an average diameter of ca. 25 nm, was determined by Faraday’s first law of electroly
Externí odkaz:
https://doaj.org/article/943237897c5b4e419270fbb41cad5750
Autor:
Ryusei Saeki, Takeshi Ohgai
Publikováno v:
Crystals, Vol 9, Iss 3, p 142 (2019)
The time-dependence of electrochemical reduction current, which was observed during the one-dimensional (1-D) crystal growth of ferromagnetic cobalt nanowire arrays, was analyzed by Johnson–Mehl–Avrami–Kolmogorov (JMAK) theory. Textured hcp-Co
Externí odkaz:
https://doaj.org/article/0ddcbf0d4842460b828e9f5a11995b1f