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PhD - Coupling of slag infiltration and resulting mechanical property changes (University of Aachen)

ABG-75646 Sujet de Thèse
12/03/2018 > 35 et < 45 K€ brut annuel
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Universite de Limoges, Projet Europeen ATHOR
Aachen - Allemagne
PhD - Coupling of slag infiltration and resulting mechanical property changes (University of Aachen)
  • Chimie
  • Physique
  • Sciences de l’ingénieur
Refractories, elastic, mechanical, infiltration, slag, corrosion, resonant frequency, thermal shock


ATHOR description (4 years ETN)
Refractories are heat-resistant materials used as inner linings of high temperature furnaces, reactors and processing units. ATHOR (Advanced THermomechamcal multiscale modeling of Refractory linings) is an innovative, collaborative and Interdisciplinary project that brings together 6 academic beneficiaries and 8 private partners. The main objective is to develop high-end engineering technologies in material engineering and numerical simulations thanks to an intensive cooperation between academia, raw materials suppliers, refractory producers and end-users. Starting from material characterization, all significant properties will be Investigated, including fracture behaviour, tension and compression creep behaviour, corrosion and thermal shock resistance. The interdisciplinary aspects will be addressed thanks to a multiscale approach looking at the influences of micro-, meso- and macro-characteristics on each other. To conduct their research and interlink the different topics, the 15 recruited researchers will take advantage of the most sophisticated numerical tools to model, design and predict the life of different lining configurations in critical operation conditions. The ATHOR network Is deeply committed to provide a combination of research and training activities which will support and enlarge the initiative of the Federation for International Refractory Research and Education (FIRE).

Specific subject of ESR 6 (one of 15 PhD students of the ATHOR ETN project)
Coupling of slag infiltration and resulting mechanical property changes
Objectives: To examine the relationships between the microstructural damages caused by slag infiltration and by thermal shock, the mechanical and elastic properties will be monitored in-sltu with thermal and chemical load, getting closer to industrial conditions for a better classification of suitable material according to the exposure. Furthermore, the microstructural characterization should help to Identify the Impact of the wear conditions (thermal gradient, slag viscosity,...) and their Interactions on the refractory behaviour.
Expected Results: The recent acquisition of high temperature Resonant Frequency Damping Analyser will record In-situ elastic properties Induced by the coupled Influence of temperature and slag Infiltration. With the help of a high temperature thermal shock furnace and different thermal gradients combined with corrosion a better understanding of the actual microstructural damages occurring In the steel Industry (ETN Partner) can be achieved. In comparison with cycling creep In compression test, the rate of Young's Modulus decay will enable to study the alteration kinetics occurring through thermal shocking between Intact and corroded materials. For an optimal understanding of the microstructural evolution, the post mortem microstructure will be examined applying high resolution analyses (SEM, HT-XRD).


Nature du financement

Financement public/privé

Précisions sur le financement

Horizon 2020 MSCA, grant 764987

Présentation établissement et labo d'accueil

Universite de Limoges, Projet Europeen ATHOR

PhD main locations: The recruited ESR will be offered the possibility to conduct 3 years PhD studies at the Institute of Mineral Engineering (GHI) of RWTH Aachen University, Germany, but also to visit other network partners for secondments, and to attend the training events of the network.

Profil du candidat

Applicant Profile: The candidate must have a good level of knowledge In thermodynamics and thermochemistry as well as refractory-related material behaviour

Eligibility criteria

Early-stage researchers (ESR) are those who are, at the time of recruitment by the host, in the first four years (full-time equivalent) of their research careers. This is measured from the date when they obtained the degree which formally entitles them to embark on a doctorate, either in the country in which the degree was obtained or in the country in which the research training is provided, irrespective of whether or not a doctorate was envisaged. That means typically, for European (or Worldwide) applicants, in the first four years after their master degree.

Conditions of international mobility of researchers: Researchers are required to undertake trans-national mobility (i.e. move from one country to another) when taking up the appointment. At the time of selection by the host organisation, researchers must not have resided or carried out their main activity (work, studies, etc.) in the country of their host organisation for more than 12 months in the 3 years immediately prior to their recruitment. Short stays, such as holidays, are not taken into account.

English language: Network fellows (ESRs) must demonstrate that their ability to understand and express themselves in both written and spoken English is sufficiently high for them to derive the full benefit from the network training.

Date limite de candidature


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