| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ćurković, Lidija
Faculty of Mechanical Engineering and Naval Architecture
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Preparation and Characterization of Poly(vinyl-alcohol)/Chitosan Polymer Blend Films Chemically Crosslinked with Glutaraldehyde: Mechanical and Thermal Investigationscitations
- 2023Comprehensive Study on Environmental Behaviour and Degradation by Photolytic/Photocatalytic Oxidation Processes of Pharmaceutical Memantinecitations
- 2022Improving Sustainability of Technical Ceramics Production: Synergistic Approach
- 2021Improving Sustainability of Technical Ceramics Production: Synergistic Approach
- 2021Graphene-Based TiO2 Nanocomposite for Photocatalytic Degradation of Dyes in Aqueous Solution under Solar-Like Radiationcitations
- 2020Photocatalytic degradation of organic pollutant using TiO2/rGO nanocomposites under simulated sunlight
- 2020Titania-Coated Alumina Foam Photocatalyst for Memantine Degradation Derived by Replica Method and Sol-Gel Reactioncitations
- 2019Effect of Additives on Stability of Alumina—Waste Alumina Suspension for Slip Casting: Optimization Using Box-Behnken Designcitations
- 2015SEM-EDS Analysis of Composite Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub> Ceramics Eroded with SiC Particles
- 2015Effects of cold isostatic pressing and granule size distribution on the densification of alumina ceramicscitations
- 2014Influence of Surface Roughness of Alumina Ceramics on Indentation Sizecitations
- 2012Fracture Toughness of Alumina Ceramics Determined by Vickers Indentation Techniquecitations
- 2010Study of microstructure and corrosion kinetic of steel guitar strings in artificial sweat solutioncitations
- 2009Determining the Fracture Toughness of Alumina Ceramics from Vickers Indentationscitations
- 2008Chemical Stability of Alumina Ceramics in Sulphuric Acid
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article
Influence of Surface Roughness of Alumina Ceramics on Indentation Size
Abstract
<jats:title>Abstract</jats:title><jats:p>Alumina (Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>) is one of the most important technical ceramic materials due to its good properties and its acceptable price. For some purposes, it is important to achieve either a very smooth or a rough surface of the ceramic object. The aim of this study was to evaluate the influence of different surface finish processes on the surface roughness of alumina and, consequently, on the measured Knoop hardness. Four types of samples were prepared, each with a different surface finish – ground with different SiC abrasive papers or polished with diamond pastes with different granulation. For each sample three indentation loads were used: 0.4903 N (HK 0.05), 4.903 N (HK 0.5) and 49.03 N (HK 5). It has been noticed that all samples exhibited a decrease in hardness with the increasing applied test load, a phenomenon known as the normal indentation size effect (ISE). In order to investigate this occurrence, three mathematical models were applied, i. e., Meyer's law, the proportional specimen resistance model (PSR) and modified proportional specimen resistance model (MPSR). The results showed that the alumina surface roughness significantly affects the measured Knoop hardness. Dependence of Knoop hardness and the indentation load can be quantified by all three mathematical models.</jats:p>