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Halvor Dalaker

Seniorforsker

Halvor Dalaker

Seniorforsker

Halvor Dalaker
Telefon: +47 926 09 241
Mobil: +47 926 09 241
Avdeling: Bærekraftig energiteknologi
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

In-situ gas monitoring by laser induced fluorescence spectroscopy

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1359447

Monitoring of silicon suboxide activity is an important parameter in experiments relevant for silicon metal production. In previous work a reactor with optical access to the reaction zone, by use of a sequence of sapphire, UV fused silica and IR transparent sapphire and CaF2 windows, was designed. I...

År 2016
Type Presentasjon
Publikasjon

Microstructure of multicrystalline silicon seeded by polysilicon chips and fluidized bed reactor granules

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1341978

Multicrystalline silicon displays a considerable smaller average grain size and reduced dislocation generation when being seeded by polycrystalline silicon chips or fluidized bed reactor silicon granules. A simple texture analysis shows how the initially random grain structure of the seeds develops ...

Forfattere Ekstrøm Kai Erik Stokkan Gaute Autruffe Antoine Søndenå Rune Dalaker Halvor Arnberg Lars Di Sabatino Marisa
År 2016
Type Tidsskriftsartikkel
Publikasjon

In-situ gas monitoring by emission spectroscopy

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1235184

Off-gas monitoring of experimental reactors give little information about intermediate reaction products and reflect chemical equilibria at reduced gas temperatures. A reactor design with optical access was designed and tested in order to be able to qualify and quantify gaseous species from their em...

År 2015
Type Presentasjon
Publikasjon

Structure and dislocation development in mono-like silicon

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1290656

The current paper investigates the structure of low-lifetime areas observed in a <110>-oriented mono-like silicon ingot grown from monocrystalline seeds. These areas are related to dislocation clusters forming at seed junctions and several generation mechanisms are discussed. Dislocations gene...

Forfattere Ekstrøm Kai Erik Stokkan Gaute Søndenå Rune Dalaker Halvor Lehmann T Arnberg Lars Di Sabatino Marisa
År 2015
Type Tidsskriftsartikkel
Publikasjon

Reduction of SiO2 to SiC using natural gas

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1159499

This paper presents a preliminary study of SiC production by use of natural gas for reduction of silica. Direct reduction of SiO2 by gas mixtures containing CH4, H2, and Ar was studied at temperatures between 1273 K and 1773 K (1000 °C and 1500 °C). Silica in form of particles between 1 and 3 mm and...

Forfattere Ksiazek Michal Tomasz Tangstad Merete Dalaker Halvor Ringdalen Eli
År 2014
Type Tidsskriftsartikkel
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