Webinars
15 March 2023
Heat Exchangers in geothermal environments are critical components that are subject to damage mechanisms like scaling and corrosion. GeoHex excellence lies in the concept of developing heat exchanger materials that addresses improvement in the anti-scaling and anti-corrosion properties as well as heat transfer performance leading to efficient and low cost systems. The webinar will present the project’s achievements towards the development these corrosion and scaling resistant coatings including their effects on the heat transfer performance
Development of amorphous metals for corrosion resistant thin film coatings
Amorphous metal coatings have great potential for corrosion protection but finding alloy compositions which form a stable amorphous structure can be an overwhelming task. We use combinatorial magnetron sputtering and x-ray analysis to map out the phase space of TaSiM (M = Al, Cr, Fe, Ti) alloys in order to identify amorphous compositions. Atomic percentages of above 10-15 at% of each constituent yield amorphous coatings in all four systems. TaSiAl coatings are stable when annealed in air up to and including 550 °C whereas TaSiFe, TaSiCr and TaSiTi are almost unchanged up to and including 750 °C. The stability of these materials at high temperatures means that they could be suitable as anti-corrosion coatings in high temperature applications.
Speakers
Davíð Ingvi Snorrason
Project manager
Grein Research
Davíð is an R&D engineer and project manager at Grein Research where he works on the GeoHex geothermal heat exchanger project. His background is in physics and bio-medical engineering, mainly plasma- and solidstate- physics and cell engineering. For the past three years his work has been focused on corrosion resistant amorphous metal coatings and their development. His field of interest is the marriage of materials science and bio technology.
Baldur Geir Gunnarsson
Project Manager
Tæknisetur
Baldur Geir Gunnarsson is a mechanical engineer with over 2 years experience in corrosion- and materials science within the geothermal field. He currently works as a project manager in geothermal research projects at Tæknisetur (IceTec).
Dagur Ingi Ólafsson
Project Manager
Innovation Center Iceland
Dagur Ingi Ólafsson is a project manager working in the field of material science and geothermal power at Innovation Center Iceland (ICI). He received his B.S. degree in Mechanical Engineering in 2015 from the University of Iceland and his Masters degree in Mechanical Engineering in 2018 from Aalto University in Finland. Dagur has been working in geothermal research projects at ICI for three years, during which his main focus has been on the in-situ corrosion testing of various metal alloys and coatings in the geothermal environment. Dagur is the project manager for ICI in European research projects such as Geo-Coat, GeoHex, MEET and GeoSmart.