Browsing NTNU Open by Author "Muggerud, Astrid Marie Flattum"
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In situ high temperature spectroscopic study of liquid inclusions and hydroxyl groups in high purity natural quartz
Gawel, Bartlomiej; Ulvensøen, Anna; Lukaszuk, Katarzyna Anna; Muggerud, Astrid Marie Flattum; Erbe, Andreas (Peer reviewed; Journal article, 2021)High purity natural based quartz is used as raw material for production of crucibles for solar-grade silicon production. The crucible properties are strongly related to presence of water and hydroxyl groups in the raw ... -
Interaction of water with quartz sand surfaces studied by in situ temperature dependent diffuse reflectance IR spectroscopy
Ulvensøen, Anna (Master thesis, 2019)Kvartssand med høy renhet brukes som materiale for digler i produksjonen av monokrystallinske silisiumstøpeblokker. Støpeblokkene blir videre produsert til solceller i Czochralski (CZ)-prosessen. Hydroksyl- og vanninnholdet ... -
Investigation of bubble distribution and evolution in solar cell quartz crucibles
Hansen, Sebastian Holand (Master thesis, 2017)Quartz crucibles are, among other applications, used to produce monocrystalline silicon ingots for the solar cell industry. The crucibles must be of high purity as any gas bubbles or impurities close to the crucible-melt ... -
Structural evolution of water and hydroxyl groups during thermal, mechanical and chemical treatment of high purity natural quartz
Gawel, Bartlomiej; Ulvensøen, Anna; Lukaszuk, Katarzyna Anna; Arstad, Bjørnar; Muggerud, Astrid Marie Flattum; Erbe, Andreas (Peer reviewed; Journal article, 2020)Fused silica crucibles are commonly used in the fabrication process of solar grade silicon ingots. These crucibles are manufactured from high purity natural quartz sand and as a consequence, their properties are influenced ... -
Transmission electron microscopy studies of dispersoids and constituent phases in Al-Mn-Fe-Si alloys
Muggerud, Astrid Marie Flattum (Doktoravhandlinger ved NTNU, 1503-8181; 2014:239, Doctoral thesis, 2014)3xxx aluminium alloys are used among others in packaging, architectural applications and heat exchangers. Both dispersoids and constituent phases are very important in this alloy system. The size and distribution of the ...