Kai Erik Ekstrøm

Associate Professor

Department of Materials Science and Engineering

kai.e.ekstrom@ntnu.no +47 73597094

Berg, E-133, Gløshaugen, Alfred Getz vei 2

Background:

MSc in Chemical Engineering and Biotechnology; specialized in Materials Chemistry and Energy Technology (NTNU; 2012).
PhD in Physical Metallurgy (NTNU; 2016).

2021 - present: Senior Chemical Engineer (NOAH AS), Associate Professor II (NTNU)

Recycling of wastes from municipal solid waste incineration (MSWI) and other industrial wastes.

2016 - 2020: Postdoctor; SFI Metal Production

Associated with the Norwegian Waste to Value project and the European RemovAl project on recycling and refining of metallurgical waste streams.
Thermodynamics and modelling of metallurgical processes; including FactSage, ChemApp and HSC Chemistry.

2012 - 2016: PhD; Solidification and Casting

Impurity control of multicrystalline silicon.
- Impurity diffusion from crystallization crucibles.
Structure control of multicrystalline silicon.
- Nucleation, mono-like and high-performance multicrystalline silicon.

Scientific, academic and artistic work

A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database

2021

Ekstrøm, Kai Erik; Bugten, Andreas Voll; van der Eijk, der; Lazou, Adamantia; Balomenos, E.; Tranell, Gabriella. (2021) Recovery of Iron and Aluminum from Bauxite Residue by Carbothermic Reduction and Slag Leaching. Journal of Sustainable Metallurgy.
Gökelma, Mertol; Aarnæs, Trygve Storm; Maier, Jürgen; F. Renkel, Maria; Ekstrøm, Kai Erik; Friedrich, Bernd; Tranell, Gabriella. (2021) Behavior of Al4C3 Particles During Flotation and Sedimentation in Aluminum Melts. Metallurgical and Materials Transactions B. vol. 52.
Wallin, Maria; Bugten, Andreas Voll; Tranell, Gabriella; Ekstrøm, Kai Erik. (2021) Valorization of SiMn Sludge for Production of Low-Phosphorus Ferroalloys. Journal of Sustainable Metallurgy.

2020

Solem, Cathrine Kyung Won; Ekstrøm, Kai Erik; Tranell, Gabriella; Aune, Ragnhild Elizabeth. (2020) Evaluation of the Effect of CO2 Cover Gas on the Rate of Oxidation of an AlMgSi Alloy. The Minerals, Metals & Materials Series.
Ekstrøm, Kai Erik; Bugten, Andreas Voll; Tranell, Gabriella. (2020) Spent potlining: Experimental work and thermochemical modelling in SFI Metal Production. 2020.

2017

Autruffe, Antoine; M'hamdi, Mohammed; Schindler, Florian; Heinz, Friedemann D.; Ekstrøm, Kai Erik; Schubert, Martin C.; Di Sabatino Lundberg, Marisa; Stokkan, Gaute. (2017) High performance multicrystalline silicon: Grain structure and iron precipitation. Journal of Applied Physics. vol. 122 (13).
Olsen, Espen; Bergan, Simen; Mehl, Torbjørn; Burud, Ingunn; Ekstrøm, Kai Erik; Di Sabatino Lundberg, Marisa. (2017) Defect related radiative recombination in mono-like crystalline silicon wafers. Physica Status Solidi (a) applications and materials science. vol. 214 (8).
Stokkan, Gaute; Di Sabatino Lundberg, Marisa; Søndenå, Rune; Juel, Mari; Autruffe, Antoine; Adamczyk, Krzysztof; Skarstad, Hanna Vaksvik; Ekstrøm, Kai Erik; Wiig, Marie Syre; You, Chang Chuan; Haug, Halvard; M'hamdi, Mohammed. (2017) Impurity control in high performance multicrystalline silicon. Physica Status Solidi (a) applications and materials science. vol. 214 (7).

2016

Castellanos, Sergio; Ekstrøm, Kai Erik; Autruffe, Antoine; Jensen, Mallory A.; Morishige, Ashley E.; Hofstetter, Jasmin; Yen, Patricia; Lai, Barry; Stokkan, Gaute; del Cañizo, Carlos; Buonassisi, Tonio. (2016) High-Performance and Traditional Multicrystalline Silicon: Comparing Gettering Responses and Lifetime-Limiting Defects. IEEE Journal of Photovoltaics. vol. 6 (3).
Ekstrøm, Kai Erik; Stokkan, Gaute; Autruffe, Antoine; Søndenå, Rune; Dalaker, Halvor; Arnberg, Lars; Di Sabatino, Marisa. (2016) Microstructure of multicrystalline silicon seeded by polysilicon chips and fluidized bed reactor granules. Journal of Crystal Growth. vol. 441.
Ekstrøm, Kai Erik; Søndenå, Rune; Autruffe, Antoine; Stokkan, Gaute; Arnberg, Lars; Di Sabatino, Marisa. (2016) The Effect of Phosphorus Gettering on Fine-Grained Multicrystalline Silicon. Proceedings of the European Photovoltaic Solar Energy Conference.
Ekstrøm, Kai Erik; Undheim, Espen; Stokkan, Gaute; Arnberg, Lars; Di Sabatino, Marisa. (2016) Beta-Si3N4 particles as nucleation sites in multicrystalline silicon. Acta Materialia. vol. 109.
Undheim, Espen; Ekstrøm, Kai Erik; Arnberg, Lars; Holmestad, Randi; Di Sabatino, Marisa. (2016) The effect of holding time on the size distribution of β-Si3N4 particles and nucleation undercooling in multicrystalline silicon. Physica Status Solidi. C, Current topics in solid state physics. vol. 13 (10-12).
Wiig, Marie Syre; Adamczyk, Krzysztof; Haug, Halvard; Ekstrøm, Kai Erik; Søndenå, Rune. (2016) The effect of phosphorus diffusion gettering on recombination at grain boundaries in HPMC-silicon wafers. Energy Procedia. vol. 92.
Ekstrøm, Kai Erik; Di Sabatino Lundberg, Marisa; Arnberg, Lars; Stokkan, Gaute. (2016) Structure Control of Multicrystalline Silicon. 2016.

2015

Ekstrøm, Kai Erik; Stokkan, Gaute; Søndenå, Rune; Dalaker, Halvor; Lehmann, T; Arnberg, Lars; Di Sabatino, Marisa. (2015) Structure and dislocation development in mono-like silicon. Physica Status Solidi (a) applications and materials science. vol. 212 (10).
Søndenå, Rune; Ekstrøm, Kai Erik; Stokkan, Gaute; Dalaker, Halvor; Lehmann, Toni; Arnberg, Lars; Di Sabatino, Marisa. (2015) Effect of Phosphorus Gettering on Quasi-Single-Crystalline Silicon Wafers. Proceedings of the European Photovoltaic Solar Energy Conference.

2012

Ekstrøm, Kai Erik; Øvrelid, Eivind Johannes; Dahl, Øystein. (2012) Growth and Characterization of Silicon Nanowires for Solar Cell Applications. 2012.

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