Blar i Institutt for materialteknologi på tittel
Viser treff 162-181 av 2562
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Atomic level bonding mechanism in steel/aluminum joints produced by cold pressure welding
(Journal article, 2019)Cold pressure welding of aluminum alloys and steels offers an attractive, cost-effective opportunity of joining the two most important structural materials. Aim of this work is to investigate the bonding mechanism between ... -
Atomic origins of dendrite formation on alkali and earthalkali metal surfaces
(Doctoral theses at NTNU;2021:313, Doctoral thesis, 2021)"The Li-ion rechargeable battery has been paramount in the on-going transition from a fossil- to a renewable energy-based society, but the state-of-the art Li-ion battery with a graphite anode is approaching its limit with ... -
Atomic Structure of Hardening Precipitates in Al-Mg-Si Alloys: Influence of Minor Additions of Cu and Zn
(Peer reviewed; Journal article, 2023)Shifting toward sustainability and low carbon emission necessitates recycling. Aluminum alloys can be recycled from postconsumer scrap with approximately 5% of the energy needed to produce the same amount of primary alloys. ... -
Atomic structures of precipitates in Al–Mg–Si alloys with small additions of other elements
(Journal article; Peer reviewed, 2018)In Al–Mg–Si alloys, additions of only a few weight percent of Mg and Si enable formation of hardening precipitates during heat treatment. The precipitation is complex and is influenced by chemical compositions and ... -
Atomic-scale 3D imaging of individual dopant atoms in an oxide semiconductor
(Peer reviewed; Journal article, 2022)The physical properties of semiconductors are controlled by chemical doping. In oxide semiconductors, small variations in the density of dopant atoms can completely change the local electric and magnetic responses caused ... -
Atomistic approach to simulate kink migration and kink-pair formation in silicon: The kinetic activation-relaxation technique
(Journal article; Peer reviewed, 2019)The energy conversion efficiency of solar cells based on multicrystalline silicon is greatly deteriorated by dislocations. However, an in-depth understanding on the dislocation motion dynamics down to atomic scale is still ... -
Atomistic details of precipitates in lean Al–Mg–Si alloys with trace additions of Ag and Ge studied by HAADF-STEM and DFT
(Journal article, 2017)Bonding energies and volume misfits for alloying elements and vacancies in multicomponent Al–Mg–Si alloys have been calculated using density functional theory (DFT). A detailed atomic scale analysis has been done for ... -
Atomistic modelling of Fe-Al and α-AlFeSi intermetallic compound interfaces
(Doctoral theses at NTNU;2020:86, Doctoral thesis, 2020)The joining of aluminum and steel has been considered an efficient solution for building light-weight technology, particularly in the automotive, aerospace and shipbuilding industries. It is an immense challenge to join ... -
Automated Metal Cleanliness Analyzer (AMCA) – An Alternative Assessment of Metal Cleanliness in Aluminum Melts
(Peer reviewed; Journal article, 2021)The established industry standards for assessing the cleanliness of aluminum melts are PoDFA (Porous Disc Filtration Apparatus) and LiMCA (Liquid Metal Cleanliness Analyzer) analyses. PoDFA provides the necessary qualitative ... -
Automatisert sanntidsmålesystem av borevæskeparametere
(Bachelor thesis, 2021)Borevæsker brukes i alle boreoperasjoner i olje- og gassindustrien. Borevæsken bidrar til at boreoperasjonen gjennomføres på en trygg og vellykket måte. Borevæskens hovedfunksjoner er å smøre borekronen, transportere ... -
Autopsy of refractory lining in anode kilns with open and closed design
(Journal article, 2018)Aluminosilicate refractory lining constitutes a major part of anode baking kilns, and during anode baking the lining is exposed to harsh conditions which limits the lifetime. Here, autopsies of refractory linings from both ... -
Avaliação experimental e simulação computacional da dissolução de partículas de cloreto de sódio em salmoura em escoamento
(Journal article; Peer reviewed, 2014)A mathematical model to predict the dissolution of salt particles suspended in a brine flow is provided. The model consists of a system of three partial differential equations (PDE) based on mass conservation of salt ... -
Azobenzene-based self-assembled monolayer modified gold electrodes: Thioacetate suppresses, thiole enhances perchlorate adsorption
(Journal article; Peer reviewed, 2022) -
B diffusion in slag during slag refining for solar grade silicon
(Master thesis, 2011)Mass transfer rate of B during slag refining has been investigated in the resistance tube furnace at temperature 1600 ºC and the mass transfer coefficients of B have been determined. The values of mass transfer coefficients ... -
B-cation ordering and dielectric properties of relaxor ferroelectric Pb(Sc1/2Nb1/2)O3
(Master thesis, 2013)Molten salt synthesis and solid state synthesis were used to make relaxor ferroelectric Pb(Sc1/2Nb1/2)O3,abbreviated PSN in most literature. Many studies have previously been conducted on this material to obtain so called ... -
BaBi2O6: A Promising n-Type Thermoelectric Oxide with the PbSb2O6 Crystal Structure
(Journal article, 2021)Thermoelectric materials offer the possibility of enhanced energy efficiency due to waste heat scavenging. Based on their high-temperature stability and ease of synthesis, efficient oxide-based thermoelectrics remain a ... -
Band gap alterations of graphitic carbon nitride for photoelectrochemical water splitting
(Master thesis, 2023)En viktig energibærer for framtiden er hydrogengass, hvor utviklingen av effektive grønne produksjonsmetoder er nødvendig for å minimere miljøpåvirkningen av global oppvarming. En slik metode er fotoelektrolyse av vann, ... -
Barium titanate-based bilayer functional coatings on Ti alloy biomedical implants
(Peer reviewed; Journal article, 2021)Piezoelectric coatings have the ability to functionalise conventional structural materials into responsive devices. Today, piezoelectric coatings have been applied to both rigid and flexible substrates for sensing, actuating, ... -
Barrier Oxide Growth and Dissolution on Aluminium in Aqueous Media
(Doctoral theses at NTNU;2016:326, Doctoral thesis, 2016)The oxide formed during anodization of aluminium has been a subject of attention since the beginning of the 20th century, due to its protective properties. The oxide consists of two layers, a dense layer adjacent to the ... -
Bauschinger effect modelled by yield surface distortions
(Journal article; Peer reviewed, 2019)A model for distorting the yield surface by flattening the part in the reverse of the loading direction, is suggested. As the basis for the distortion, the model applies a pair of second-order back-stress tensors of similar ...