Institutt for materialteknologi
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Detailed investigation of the shearing mechanism of β" precipitates in Al-Mg-Si alloys
(Peer reviewed; Journal article, 2020)The mechanism behind shearing of β'' precipitates in Al-Mg-Si alloys during deformation is investigated by applying advanced transmission electron microscopy (TEM) techniques and frozen phonon multislice TEM image simulations ... -
Charcoal as an Alternative Reductant in Ferroalloy Production: A Review
(Peer reviewed; Journal article, 2020)This paper provides a fundamental and critical review of biomass application as renewable reductant in integrated ferroalloy reduction process. The basis for the review is based on the current process and product quality ... -
Pre-reduction Behaviour of Manganese Ores in H2 and CO Containing Gases
(Peer reviewed; Journal article, 2020)This paper presents results of a study conducted on the pre-reduction of Assmang and Comilog ores with gases of CO+CO2 and CO+H2+CO2 up to 1 000°C. Non-isothermal experiments were carried out in a vertical thermogravimetric ... -
Development of Al-TiC Wire Feedstock for Additive Manufacturing by Metal Screw Extrusion
(Peer reviewed; Journal article, 2020)The development of customised aluminium alloys for welding and additive manufacturing (AM) is proposed to solve several quality issues and to enhance the mechanical integrity of components. The introduction of ceramic grain ... -
Wire and Arc Additive Manufacturing with TiC-Nanoparticle Reinforced AA5183 Alloy
(Peer reviewed; Journal article, 2020)Wire and arc additive manufacturing of aluminium-ceramic composites shows great potential to produce high strength materials. By incorporation of nanoparticles in the feedstock wire, fine-grained material with low ... -
Formation and evolution of the interfacial structure in Al/steel compound castings during solidification and heat treatment
(Peer reviewed; Journal article, 2020)In this work, Al7SiMg/steel compound castings were produced through a low-pressure die casting process. All steel inserts were galvanized, where half of them were flux-coated to further improve the wettability and remove ... -
Comparison of Students' Perceived Learning in Two Similar Lab Courses with Different Teaching Staffs
(Journal article, 2020)At the Norwegian University of Science and Technology (NTN), two subjects with similar chemistry laboratory exercises have different practices with respect to the use of permanent and temporary staffs. In an ever-increasing ... -
Transformation Kinetics of Burnt Lime in Freshwater and Sea Water
(Peer reviewed; Journal article, 2020)Calcium oxide (CaO), also known as burnt lime, is being considered as a possible treatment to reduce the negative impact of sea urchins on tare forests in northern coastal waters and blue-green algal blooms in the surrounding ... -
Effect of anion exchange ionomer content on electrode performance in AEM water electrolysis
(Journal article; Peer reviewed, 2020)Anion exchange membrane water electrolysis (AEMWE) has acquired substantial consideration as a cost-effective hydrogen production technology. The anion ionomer content in the catalyst layers during hydrogen and oxygen ... -
A unified approach for the calculation of in-plane dielectric constant of films with interdigitated electrodes
(Peer reviewed; Journal article, 2020)Interdigitated electrodes (IDEs) on dielectric films is an important electrode design in electrical components such as transducers and sensors. Further development and use of IDEs for characterization of the in-plane ... -
First-principles study of tensile and shear strength of Fe-Al and α-AlFeSi intermetallic compound interfaces
(Peer reviewed; Journal article, 2021)First-principles virtual tensile and shear strength calculations have been performed on the Fe2Al5// Fe4Al13 and -AlFeSi// Fe4Al13 interfaces. The Fast Inertial Relaxation Engine (FIRE) algorithm is used for optimizing ... -
Modeling interfacial mass transfer driven bubble growth in supersaturated solutions
(Peer reviewed; Journal article, 2020)A commonly encountered phenomenon in chemical processes is bubble evolution driven by supersaturation. On the continuum scale, this essentially involves interfacial mass transfer resulting in the growth of bubbles and their ... -
New Insights into Silicon Purification by AlloyingLeaching Refining: A Comparative Study of MgSi, CaSi, and CaMgSi Systems
(Peer reviewed; Journal article, 2020)In the present work, a comparative study of the silicon alloying–leaching purification process was carried out on the recently developed Mg–Si system, the Ca–Si system, and the novel ternary Ca–Mg–Si system. Insights were ... -
Reaction pathway of the hydrothermal synthesis of AgCuO2 from in situ time-resolved X-ray diffraction
(Journal article; Peer reviewed, 2020)AgCuO2 is an interesting semiconductor oxide with appealing optical and electronic properties. While the oxide has been synthesized in bulk by different approaches, no study on the formation mechanism has been carried out ... -
Performance of a thermoelectric module based on n-type (La0.12Sr0.88)0.95TiO3-δ and p-type Ca3Co4-xO9+δ
(Journal article; Peer reviewed, 2020)Here, we present the performance of a thermoelectric (TE) module consisting of n-type (La0.12Sr0.88)0.95TiO3 and p-type Ca3Co4-xO9+δ materials. The main challenge in this investigation was operation of TE module in different ... -
Spectroscopic study of partially oxidized BN nanoscrolls induced by low frequency ultrasonic radiation
(Journal article; Peer reviewed, 2020)In comparison to carbon nanostructures, hexagonal boron nitride (hBN) nanostructures show better biocompatibility and lower cytotoxicity. However, research studies on hBN nanostructures for biomedical applications are still ... -
Controlled growth of SrxBa1-xNb2O6 hopper- and cube-shaped nanostructures by hydrothermal synthesis
(Journal article; Peer reviewed, 2020)Controlling the shape and size of nanostructured materials has been a topic of interest in the field of material science for decades. In this work, the ferroelectric material SrxBa1-xNb2O6 (x = 0.32–0.82, SBN) was prepared ... -
Phosphorus separation from metallurgical-grade silicon by magnesium alloying and acid leaching
(Peer reviewed; Journal article, 2020)n this paper, the separation of phosphorus from metallurgical-grade silicon was investigated based on an Mgalloying and HCl leaching approach. Experimental results show that P concentration was reduced from initial15.1pp ... -
Ni/NiO nanosheets for alkaline hydrogen evolution reaction: In situ electrochemical-Raman study
(Journal article; Peer reviewed, 2020)Nickel/Nickel oxide (Ni/NiO) nanosheets heterostructure is a cheap and active catalyst for hydrogen evolution reaction (HER) in alkaline electrolytes. However, the reason for this activity is still under debate. Herein ... -
On the formation mechanism of Ba0.85Ca0.15Zr0.1Ti0.15O3 thin films by aqueous chemical solution deposition
(Journal article; Peer reviewed, 2020)Here we report on the development of an environmentally friendly, simple and robust aqueous chemical solution route for the fabrication of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) thin films. Using a stable aqueous precursor solution, ...
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