Browsing NTNU Open by Author "Lein, Hilde Lea"
Now showing items 1-20 of 49
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Application of Graphene and Graphene Oxide as Antifouling Agents in Epoxy-Based Coatings
Bjaanes, Tuva Jevnaker (Master thesis, 2022)Biologisk begroing definerer uønsket vekst av marine organismer, bl.a. kiselalger, på overflaten av marine konstruksjoner. Maritim industri har tradisjonelt sett bekjempet begroing ved belegg som inneholder tilsetningsstoffer ... -
Application of nanoindentation testing to study of the interfacial transition zone in steel fiber reinforced mortar
Wang, Xiao Hui; Jacobsen, Stefan; He, Jianying; Zhang, Zhiliang; Lee, Siaw Foon; Lein, Hilde Lea (Journal article; Peer reviewed, 2009)The characteristics of the profiles of elastic modulus and hardness of the steel fiber–matrix and fiber–matrix– aggregate interfacial zones in steel fiber reinforced mortars have been investigated by using nanoindentation ... -
Ceramic Thermal Barrier Coatings of Yttria Stabilized Zirconia Made by Spray Pyrolysis
Askestad, Inga (Master thesis, 2011)A thermal barrier coating (TBC) is used as thermal protection of metallic components exposed to hot gas streams in e.g. gas turbine engines. Due to a high thermal expansion coefficient, low thermal conductivity, chemical- ... -
Chapter 9 - Coatings and surfaces with hydrophobic and anti-icing properties
Lein, Hilde Lea (Chapter, 2019)Icing on surfaces has always been a problem if water is present under freezing conditions. The ice can cause large damage to equipment and installations, and it is therefore of greatest interest to look into possibilities ... -
Characterization of a Commercial Anti-Icing Coating - An effort to further the understanding of the relationship between surface treatment, hydrophobicity and the ability to prevent formation of ice on structures.
Larssæter, Harald (Master thesis, 2017)Icing on structures such as wind turbines, ships and overhead powerline is a major problem in regions prone to sub-zero temperatures. The removal of ice on a surface is both costly and requires constant surveillance. In ... -
Characterization of Flooring Composites
Vatn, Kathrine Eriksen (Master thesis, 2017)The possibility of reinforcing high-pressure laminates with particles of yttria-stabilized zirconia has been investigated. The particles were embedded in a matrix of melamine formaldehyde resin, and several parameters, ... -
Comparison of iron and copper doped manganese cobalt spinel oxides as protective coatings for solid oxide fuel cell interconnects
Talic, Belma; Molin, Sebastian; Wiik, Kjell; Hendriksen, Peter Vang; Lein, Hilde Lea (Journal article; Peer reviewed, 2017)MnCo2O4, MnCo1.7Cu0.3O4 and MnCo1.7Fe0.3O4 are investigated as coatings for corrosion protection of metallic interconnects in solid oxide fuel cell stacks. Electrophoretic deposition is used to deposit the coatings on ... -
Conductive Coatings for Metal Bipolar Plates in Proton Exchange Membrane Water Electrolyzers
Olaussen, Tina (Master thesis, 2016)Due to the use of expensive materials, only 4 % of hydrogen production today is from water electrolysis. The most efficient low-temperature electrolyzer is the proton exchange membrane electrolyzer (PEMWE), where the bipolar ... -
Corrosion protection of metals/alloys by EPD (electrophoretic deposition)
Aas, Linda Berg (Master thesis, 2014)A solid oxide fuel cell consists of multiple cells stacked on top of each other. Between the individual cells is an interconnect component. In intermediate temperature solid oxide fuel cells, this component is made of ... -
De-Icing Coatings Based on Solar Illumination
Stemsrud, Johannes (Master thesis, 2023)Avising av overflater er viktig for ulike strukturer i kaldt klima, som veier, høyspentlinjer, vindmøller eller i luftfartsindustrien. Målet med dette arbeidet er å undersøke fabrikasjonsprosessen og karakterisere fire ... -
De-icing coatings based on solar illumination Preparation and characterization
Sletvold, Stine (Master thesis, 2022)Målet med dette prosjektet har bestått av å lage og karakterisere et overflatebelegg som kan utnytte energien i solstråler til avising av vindmøller og andre installasjoner utsatt for isakkumulering. Belegget består av tre ... -
De-icing coatings based on solar illumination Preparation and characterisation
Lagmannsveen, Ann Kristin (Master thesis, 2020)Dette prosjektet har hatt som mål å lage og karakterisere et overflatebelegg som utnytter energien i solstråler til avising av flyvinger, vindmøller og andre installasjoner som er utsatt for isakkumulering. Belegget består ... -
Development of Asymmeteric Membranes for Oxygen Separation by Tape Casting and Dip Coating
Talic, Belma (Master thesis, 2013)Ceramic membranes made from mixed ionic and electronic conductive oxide materials have received much attention over the last decade due to their ability to separate oxygen from air at 100 % selectivity. The flux through ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
Luneng, Raymond (Master thesis, 2015)Prevention of ice formation is an important yet dicult task for many industries operating under freezing conditions, such as aeronautics and the oil industry. Ice accumulation can severely limit the operational eciency, ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
Vassmyr, Hanna Sandvoll (Master thesis, 2016)Icing is a problem for several industries, and current methods for removal of ice have several difficulties as they are time consuming, energy intensive and may be environmentally harmful. A better solution to the icing ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
Hornnes, Vegard (Master thesis, 2017)Ice accumulation on outdoor infrastructure is a major problem for many industries. Several strategies are commonly employed to remove ice, but they are often expensive or have negative environmental consequences. An ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications - Steel Substrates
Moe, Ole-Bjørn Ellingsen (Master thesis, 2015)Icing is a major problem for ships, airplanes, and wind turbines, among many other applications. To reduce or remove icing is extremely costly and is constantly in need of manpower. In this thesis the possibility of a ... -
Diffusion couple study of the interaction between Cr2O3 and MnCo2O4 doped with Fe and Cu
Talic, Belma; Hendriksen, Peter Vang; Wiik, Kjell; Lein, Hilde Lea (Peer reviewed; Journal article, 2019)Manganese cobalt spinel oxides are promising coating materials for the protection of ferritic stainless steel interconnects in solid oxide fuel cell (SOFC) stacks. The interaction between such coatings and the steel is ... -
Effect of coating density on oxidation resistance and Cr vaporization from solid oxide fuel cell interconnects
Talic, Belma; Falk-Windisch, Hannes; Venkatachalam, Vinothini; Hendriksen, Peter Vang; Wiik, Kjell; Lein, Hilde Lea (Journal article; Peer reviewed, 2017)Manganese cobalt spinel oxides are promising materials for protective coatings for solid oxide fuel cell (SOFC) interconnects. To achieve high density such coatings are often sintered in a two-step procedure, involving ... -
Effect of pre-oxidation on the oxidation resistance of Crofer 22 APU
Talic, Belma; Molin, Sebastian; Hendriksen, Peter Vang; Lein, Hilde Lea (Journal article; Peer reviewed, 2018)The ferritic stainless steel Crofer 22 APU is attractive for the use as interconnects in solid oxide fuel cell stacks. The oxidation rate of this alloy in air at 800 °C was reduced by pre-oxidation at higher temperatures ...