Browsing NTNU Open by Author "Ulvensøen, Anna"
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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 ... -
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 ...