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X-WR-CALNAME:Suomen Korroosioyhdistys
X-ORIGINAL-URL:https://www.korroosioyhdistys.fi
X-WR-CALDESC:Tapahtumat Suomen Korroosioyhdistys
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BEGIN:VTIMEZONE
TZID:Europe/Helsinki
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DTSTART:20220327T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Helsinki:20230301T153000
DTEND;TZID=Europe/Helsinki:20230301T163000
DTSTAMP:20260422T132445
CREATED:20230119T142939Z
LAST-MODIFIED:20230119T142939Z
UID:1383-1677684600-1677688200@www.korroosioyhdistys.fi
SUMMARY:SKY:n hallituksen kokous
DESCRIPTION:
URL:https://www.korroosioyhdistys.fi/event/skyn-hallituksen-kokous/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Helsinki:20230302T150000
DTEND;TZID=Europe/Helsinki:20230302T163000
DTSTAMP:20260422T132445
CREATED:20230119T143723Z
LAST-MODIFIED:20230119T143723Z
UID:1385-1677769200-1677774600@www.korroosioyhdistys.fi
SUMMARY:CorroZoom: Roger Newman: The effect of alloy composition on molten salt corrosion- Dealloying\, but not as we know it
DESCRIPTION:To register (free for all): \nhttps://osu.zoom.us/webinar/register/WN_uVkt8yKkQX-k_jodqB8zPA \n\n\nThe effect of alloy composition on molten salt corrosion- Dealloying\, but not as we know it  \n  \nRoger Newman \nUniversity of Toronto\, Canada \n\nAbstract \nThis talk will be based mainly on the recent PhD research of Dr. Touraj Ghaznavi\, with other comparison material as required. Molten salt corrosion is topical in several technologies\, including small modular molten-salt nuclear reactors. Our research has been focused on NiFe and NiCrFe alloys\, but the general principles should be applicable to other solid-solution alloy systems that show dealloying\, with the formation of nano- or micro-porous dealloyed layers. \nThere are two kinds of dealloying threshold\, or parting limit\, that are familiar at ambient temperatures in aqueous electrolytes. One is in the 50-60 at.% range of less-noble (LN) metal content (example: AuAg). The other is close to 20 at.% LN content (example: CuZn). Both these compositions have a meaning within percolation theory\, as discussed by Artymowicz et al. [1]. It is recognized that increasing kinetics of surface diffusion of the more-noble (MN) metal (or surface exchange of MN metal and its ions\, as in the brass example) reduce the parting limit by exposing otherwise inaccessible paths rich in LN metal. With this background\, we can expect a further reduction in the parting limit at the high temperatures where we get molten salt corrosion. We can also expect that with sufficient increase in temperature\, lattice diffusion of alloying elements will start to affect the kinetics and/or the morphology of the dealloyed material. Both these expectations have been realized in Dr. Ghaznavi’s work using molten chloride salts\, but with several surprises along the way. \n[1] D.M. Artymowicz\, J. Erlebacher\, and R.C. Newman\, Relationship between the parting limit for de-alloying and a particular geometric high-density site percolation threshold\, Philosophical Magazine 89(21) (2009) 1663-1693. \n  \nBiography \nRoger Newman is Professor and UNENE Research Chair in the Department of Chemical Engineering and Applied Chemistry at the University of Toronto (UofT). Before joining UofT in 2004\, he spent 20 years in the Corrosion and Protection Centre\, UMIST\, Manchester\, UK. Prior to that\, he spent several years at Brookhaven National Laboratory in the US. His main research interests have been localized corrosion\, stress corrosion cracking\, passivity\, and dealloying. He also has an active program in metallic nanomaterials. He has ongoing research with the nuclear power\, nuclear waste management\, and natural gas (GTL) industries. Some decades ago\, he was very active in corrosion issues in the pulp and paper industry\, and oil and gas production.
URL:https://www.korroosioyhdistys.fi/event/corrozoom-roger-newman-the-effect-of-alloy-composition-on-molten-salt-corrosion-dealloying-but-not-as-we-know-it/
LOCATION:Zoom
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BEGIN:VEVENT
DTSTART;TZID=Europe/Helsinki:20230315T170000
DTEND;TZID=Europe/Helsinki:20230315T190000
DTSTAMP:20260422T132445
CREATED:20230119T142633Z
LAST-MODIFIED:20230119T142633Z
UID:1380-1678899600-1678906800@www.korroosioyhdistys.fi
SUMMARY:SKY Vuosikokous
DESCRIPTION:Suomen korroosioyhdistys SKY – Finlands korrosionsförening r.y.:n sääntömääräinen vuosikokous pidetään klo 18 Espoossa. Kokouksessa käsitellään sääntömääräiset asiat\, jotka mainitaan jäsenille lähetettävässä kokouskutsussa. Kokoukseen voi osallistua myös etänä\, ja linkki lähetetään jäsenille kokouskutsun yhteydessä.\nEnnen vuosikokousta on vuosikokousesitelmä.\n 
URL:https://www.korroosioyhdistys.fi/event/sky-vuosikokous/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Helsinki:20230327T150000
DTEND;TZID=Europe/Helsinki:20230327T163000
DTSTAMP:20260422T132445
CREATED:20230314T105532Z
LAST-MODIFIED:20230314T105532Z
UID:1407-1679929200-1679934600@www.korroosioyhdistys.fi
SUMMARY:CorroZoom Season 3 Webinar - Chaofang Dong
DESCRIPTION:Fourth CorroZoom Season 3 Webinar – Chaofang Dong\n27 March 2023 at 0800 US Eastern\nTo register (free for all):\nhttps://osu.zoom.us/webinar/register/WN_lead_HwPTJ-iVT5ooTrfSw \nIntegrated Multiscale Modeling and Prediction of Corrosion\nChaofang Dong\nUniversity of Science and Technology Beijing\, China \nAbstract \nIn the last decade\, corrosion modeling has made progress towards the atomic-scale clarification of corrosion mechanisms and the computer-aided designing of advanced materials with good corrosion resistance. This talk focuses on the theoretical methods of integrated calculations and the developments in applications to the study of corrosion. Three specific applications will be presented: first-principles techniques combined with molecular dynamics\, peridynamic theory\, and the finite element method provide multiscale models to investigate the micro-mechanisms of stress corrosion cracking and hydrogen-induced cracking. The modeling of passivity and passive film breakdown will be discussed elaborately through the transport of point defects and its correlation with the energy level degeneracy. Because corrosion jeopardizes materials longevity and engineering safety\, the corrosion rate needs to be predicted to better guide materials selection. Although field exposure experiments are dependable\, their prohibitive cost and time-consuming nature make it difficult to obtain a large dataset for machine learning. Here\, we propose a strategy called Integrating Ab-initio Calculations with Random Forest to optimize the model\, thereby estimating the corrosion rate of Al alloys in diverse environments. For better and efficient development of integrated computation of corrosion\, extensive cooperation and powerful data infrastructure are needed by stronger joint efforts in the future. \nBiography \nChaofang Dong is professor in the National Materials Corrosion and Protection Data Center and Beijing Advanced Innovation Center for Materials Genome Engineering at the University of Science and Technology Beijing (USTB). She has been in Corrosion and Protection Center of USTB for 29 years since her undergraduate studies. She spent one year at UC Berkeley in the US. Her research interests are focused on the study of passivation\, pitting and atmospheric corrosion\, including multiscale simulation\, computation\, and micro-mechanism analysis of corrosion. She has been involved in the development of a data-driven rational design strategy\, and engineering a robust pathway from simulation analysis\, experimental validation to engineering demonstration for the development of corrosion-resistant metals.
URL:https://www.korroosioyhdistys.fi/event/corrozoom-season-3-webinar-chaofang-dong/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Helsinki:20230330T160000
DTEND;TZID=Europe/Helsinki:20230330T170000
DTSTAMP:20260422T132445
CREATED:20230119T140409Z
LAST-MODIFIED:20230329T103701Z
UID:1366-1680192000-1680195600@www.korroosioyhdistys.fi
SUMMARY:Jäsenilta Eristeiden alainen korroosio 30.3.2023 klo 16-17
DESCRIPTION:Suomen korroosioyhdistys järjestää jäsenillan Teamsissa torstaina 30.3.2023 klo 16-17. Linkki on toimitettu jäsenille meilillä. \nAiheena on eristeiden alainen korroosio\, josta ensi lyhyt alustus ja sen jälkeen keskustelua. Illan asiantuntija on Sami Vapalahti. \nSami Vapalahti on vuonna 2003 valmistunut materiaalitekniikan DI\, jolla hyvin monialainen historia. Vuosien 2003-2008 hän toimi metallurgian laboratoriossa tutkijana aiheena metallurgisten prosessien CFD-mallinnus ja jatkuvavalun toisiojäähdytyksen empiirinen tutkimus. Vuodesta 2008 Sami sukelsi uudelle alalle ja sai oppipoikakoulutuksen tulenkestävän rakentamisen parissa toimien projektipäällikkönä uunien vuorausten parissa.\nTutustuttuaan pinnoitteisiin vuonna 2010\, hän näki niiden tunnistamattoman potentiaalin ja perusti Rodbay Oy:n vuonna 2011. Yhtiön visio on ollut yhdistää tieteellinen ja urakoinnin osaaminen uusien pinnoiteinnovaatioiden markkinoille tuomisessa. Urakointi ja materiaalimyynti on sisältänyt lämpöä heijastavia ja absorboivia\, korroosiosuojaus-\, vesieristys- sekä lämmöneristyspinnoitteita pyrkien esittelemään uudenlaisia ratkaisuja vanhoihin haasteisiin kuten eristyksen alainen korroosio sekä energiatehokkuus. Vuosien aikana Rodbay Oy on tehnyt tutkimusta merkittävällä osalla liikevaihtoaan keskittyen erityisesti lämmönsiirron tutkimukseen. Sillä saralla onkin tulossa merkittäviä tuloksia seuraavien kuukausien sisällä.
URL:https://www.korroosioyhdistys.fi/event/jasenilta-eristeiden-alainen-korroosio-30-3-klo-16-17/
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