Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Juha-Pekka Nikkanen"'
Dissolution-Induced Nanowire Synthesis on Hot-Dip Galvanized Surface in Supercritical Carbon Dioxide
Autor:
Aaretti Kaleva, Ville Saarimaa, Saara Heinonen, Juha-Pekka Nikkanen, Antti Markkula, Pasi Väisänen, Erkki Levänen
Publikováno v:
Nanomaterials, Vol 7, Iss 7, p 181 (2017)
In this study, we demonstrate a rapid treatment method for producing a needle-like nanowire structure on a hot-dip galvanized sheet at a temperature of 50 °C. The processing method involved only supercritical carbon dioxide and water to induce a rea
Externí odkaz:
https://doaj.org/article/0f21510ce13e494b9b6d6175ae415710
Autor:
Nuria Fuertes, Ville Saarimaa, Tommy Zavalis, Aaretti Kaleva, Erkki Levänen, Juha-Pekka Nikkanen, Dan Persson, Golrokh Heydari
Publikováno v:
Materials and Corrosion. 71:1619-1628
In this study, the local electrochemical activity of untreated and passivated (natural or chemical passivation) zinc specimens was observed during immersion in a 0.1-M NaCl solution. The localized anodic activity during the exposure, measured with th
Autor:
Ville Saarimaa, Carl Lange, Teemu Paunikallio, Erkki Levänen, Pasi Väisänen, Juha-Pekka Nikkanen, Aaretti Kaleva, Antti Markkula
Publikováno v:
Journal of Coatings Technology and Research. 17:285-292
The surface activity of hot-dip galvanized steel was evaluated after alkaline cleaning by exposing the cleaned specimens in humid supercritical carbon dioxide, followed by extraction and quantification of the formed corrosion products. Different free
Autor:
Tommi Vuorinen, Jorma Vihinen, Risto Kari, Turkka Salminen, Amandeep Singh, Erkki Levänen, Juha-Pekka Nikkanen, Mari Honkanen
Publikováno v:
Singh, A, Salminen, T, Honkanen, M, Nikkanen, J P, Vuorinen, T, Kari, R, Vihinen, J & Levänen, E 2020, ' Carbon coated TiO 2 nanoparticles prepared by pulsed laser ablation in liquid, gaseous and supercritical CO 2 ', Nanotechnology, vol. 31, no. 8, 085602 . https://doi.org/10.1088/1361-6528/ab53ba
Nanotechnology
Nanotechnology
We report on the synthesis of TiO2 nanoparticles using nanosecond pulse laser ablation of titanium in liquid, gaseous and supercritical CO2. The produced particles were observed to be mainly anatase-TiO2 with some rutile-TiO2. In addition, the partic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::913d3179d65dcd756d914a24078f5793
https://cris.vtt.fi/en/publications/4b7b223c-a29e-44aa-9f4b-a87bf2e39c93
https://cris.vtt.fi/en/publications/4b7b223c-a29e-44aa-9f4b-a87bf2e39c93
Autor:
Amandeep, Singh, Turkka, Salminen, Mari, Honkanen, Juha-Pekka, Nikkanen, Tommi, Vuorinen, Risto, Kari, Jorma, Vihinen, Erkki, Levänen
Publikováno v:
Nanotechnology. 31(8)
We report on the synthesis of TiO
Autor:
Tero Laihinen, Teemu Paunikallio, Jere Manni, Carl Lange, Saara Heinonen, Ville Saarimaa, Erkki Levänen, Juha-Pekka Nikkanen, Pasi Väisänen, Antti Markkula, Aaretti Kaleva
Publikováno v:
ACS Applied Materials & Interfaces. 10:21730-21739
Zinc carbonate and a mixed-phase zinc carbonate were precipitated selectively on hot dip galvanized steel in the presence of CO2 and water. The zinc carbonate was precipitated as a uniform layer with cubic superficial appearance, while the mixed-phas
Autor:
Teemu Paunikallio, Ville Saarimaa, Saara Heinonen, Pasi Väisänen, Antti Markkula, Aaretti Kaleva, Erkki Levänen, Juha-Pekka Nikkanen
Publikováno v:
Surface and Interface Analysis. 50:564-570
Autor:
Ville Saarimaa, Aaretti Kaleva, Erkki Levänen, Pasi Väisänen, Juha-Pekka Nikkanen, Jyrki Juhanoja, Saara Heinonen, Antti Markkula
Publikováno v:
Surface and Coatings Technology. 331:137-142
Supercritical carbon dioxide (scCO2) treatment was employed for rapid formation of a zinc patina layer on hot dip galvanized (HDG) steel. In the presence of H2O and a Cu precursor, an artificial patina consisting of two distinctive phases was formed:
Autor:
Ville, Saarimaa, Aaretti, Kaleva, Juha-Pekka, Nikkanen, Jere, Manni, Carl, Lange, Teemu, Paunikallio, Tero, Laihinen, Saara, Heinonen, Erkki, Levänen, Pasi, Väisänen, Antti, Markkula
Publikováno v:
ACS applied materialsinterfaces. 10(25)
Zinc carbonate and a mixed-phase zinc carbonate were precipitated selectively on hot dip galvanized steel in the presence of CO
Dissolution-Induced Nanowire Synthesis on Hot-Dip Galvanized Surface in Supercritical Carbon Dioxide
Autor:
Erkki Levänen, Juha-Pekka Nikkanen, Pasi Väisänen, Ville Saarimaa, Antti Markkula, Aaretti Kaleva, Saara Heinonen
Publikováno v:
Nanomaterials, Vol 7, Iss 7, p 181 (2017)
Nanomaterials
Nanomaterials
In this study, we demonstrate a rapid treatment method for producing a needle-like nanowire structure on a hot-dip galvanized sheet at a temperature of 50◦ C. The processing method involved only supercritical carbon dioxide and water to induce a re