Browsing Institutt for materialteknologi by Title
Now showing items 1016-1035 of 2509
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Heterogeneous nucleation and grain growth of inoculated aluminium alloys: An integrated study by in-situ X-radiography and numerical modelling
(Journal article; Peer reviewed, 2017)A comprehensive study on the heterogeneous nucleation and grain growth of Al-10 wt.%Cu alloys inoculated with Al-5Ti-1B was carried out. To further reveal the solute segregation stifling mechanism, in-situ near-isothermal ... -
Hierarchical structure in Al-Cu alloys to promote strength/ductility synergy
(Peer reviewed; Journal article, 2021)Experimental evidence demonstrated that equal channel angular pressing (ECAP) at cryogenic temperature, in comparison with ECAP at room temperature, led to promoted strength-ductility synergy in an Al-2.5wt.%Cu alloy. The ... -
High capacity Mg batteries based on surface-controlled electrochemical reactions
(Journal article; Peer reviewed, 2018)Mg batteries are one of several new battery technologies expected to partially substitute lithium-based batteries in the future due to the lower cost and higher safety. However, the development of Mg batteries has been ... -
High capacity nanostructured Li2FexSiO4/C with Fe hyperstoichiometry for Li-ion batteries
(Journal article; Peer reviewed, 2013-02-17)Li2FeSiO4-based materials have attracted a great deal of interest as cathodes for lithium ion batteries for its excellent thermal stability and good cycling ability. Nanoporous Li2FeSiO4/C composites with varying Fe ... -
High interfacial charge storage capability of carbonaceous cathodes for Mg batteries
(Journal article; Peer reviewed, 2018)A rechargeable Mg battery where the capacity mainly originates from reversible reactions occurring at the electrode/electrolyte interface efficiently avoids the challenge of sluggish Mg intercalation encountered in ... -
High performance multicrystalline silicon: Grain structure and iron precipitation
(Journal article; Peer reviewed, 2017)We report results from a national project about impurities in high performance multicrystalline silicon: Contamination sources, transport routes, interaction with crystal defects and impact on solar cell efficiency parameters. ... -
High Performance Wear Resistant Bainite Steel for Agricultural Application
(Master thesis, 2021)Dette arbeidet er en del av forskningsprosjektet TailorPro, som har som formål å utvide forståelsen av varmebehandlingsprosesser av nye og eksisterende stållegeringer, i den hensikt å maksimere produkters levetid. I henhold ... -
High piezoelectricity by multiphase coexisting point: Barium titanate derivatives
(Journal article; Peer reviewed, 2018)BaTiO3-based lead-free piezoelectric materials have long been known as “a mediocre class of piezoelectric materials.” However, they have seen significant renewed interest in recent years ever since the discovery of high ... -
High Power Batteries probed by Neutron Scattering
(Doctoral theses at NTNU;2017:195, Doctoral thesis, 2017)Rechargeable batteries are currently powering a large range of applications, including power and emergency storage systems, HEVs and EVs, and various portable electronic devices. Increasing the use of batteries as a ... -
High Pressure Die Casting of Aluminium and Magnesium Alloys- Microstructure Heat Treatment, Energy Absorption Characteristics and Microstructure
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:207, Doctoral thesis, 2009)The high-pressure die-casting process (HPDC) is extensively used as a commercial process for the production of complex near net shape automotive castings. Owing to the fast and turbulent filling of the liquid metal into ... -
High Pressure Die Casting of Aluminium and Magnesium Alloys: Grain Structure and Segregation Characteristics
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:57, Doctoral thesis, 2004)Cold chamber high pressure die casting, (HPDC), is an important commercial process for the production of complex near net shape aluminium and magnesium alloy castings. The work presented in the thesis was aimed at investigating ... -
High Pressure Die Casting of Light Metals: Heat Transfer in the HPDC process
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:197, Doctoral thesis, 2014)Heat transfer during cold chamber High Pressure Die Casting High Pressure Die Casting (HPDC) is achieved by pouring liquid metal into a steel cylinder and forcing this metal into a die cavity using high pressure. The ... -
High resolution crystal orientation mapping of ultrathin films in SEM and TEM
(Peer reviewed; Journal article, 2022)Ultrathin metallic films are important functional materials for optical and microelectronic devices. Dedicated characterization with high spatial resolution and sufficient field of view is key to the understanding of the ... -
High strength and ductile high solid solution Al-Mg alloy processed by a novel hard-plate rolling route
(Journal article, 2017)Achieving bimodal grain structure via cold rolling remains a challenge for Al–Mg alloys. In the present work, a high tensile strength (∼525 MPa) and ductile (∼14%) Al–9Mg alloy was fabricated by a novel hard-plate rolling ... -
High Temperature Cathodic Disbondin of Organic Coatings on Submerged Steel Structures
(Master thesis, 2011)There are currently no standard test methods for testing the cathodic disbonding properties of organic coatings at temperatures above 100 C. There are several subsea oil and gas reservoirs with high temperatures, some as ... -
High temperature corrosion and corrosion protection of metallic interconnects for SOFC
(Doctoral thesis at NTNU;2015:155, Doctoral thesis, 2015)Reducing solid oxide fuel cells (SOFCs) operation temperature from 900-100 °C to 700-800 °C, has made the substitution of traditional lanthanum chromate (LaCrO3) ceramic interconnect with metallic interconnect possible. ... -
High temperature interaction between Si–B alloys and Si3N4
(Peer reviewed; Journal article, 2021)Si3N4 is a candidate crucible material for Si–B alloys in high temperature thermal energy storage system. In this regard, the phase formation in the Si–B alloys and the interaction between the alloys and Si3N4 were ... -
High Temperature Interaction of Si-B Alloys with Graphite Crucible in Thermal Energy Storage Systems
(Journal article; Peer reviewed, 2019)Si-B alloys are proposed as a potential phase change material (PCM) in the novel high temperature thermal energy storage systems. For successfully introducing the new PCM, the selection of proper refractory material in the ... -
High temperature X-ray diffraction and thermo-gravimetrical analysis of the cubic perovskite Ba0.5Sr0.5Co0.8Fe0.2O3-δ under different atmospheres
(Journal article; Peer reviewed, 2015)Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) with the cubic perovskite structure is known to be metastable at low temperature under an oxidizing atmosphere. Here, the thermal and chemical expansion of BSCF were studied by in situ high ... -
High thermoelectric performance and low thermal conductivity in Cu2−yS1/3Se1/3Te1/3 liquid-like materials with nanoscale mosaic structures
(Journal article, 2017)Mosaic-crystal microstructure is one of the optimal strategies for decoupling and balancing thermal and electrical transport properties in thermoelectric materials. Herein, we successfully achieve the desired nanoscale ...