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Refractories Research at Polytech’Orléans : Design, Corrosion and Thermo-mechanical Modelling. Research Center for Materials at High Temperature (CRMHT - UPR 4212 CNRS) Polytech’Orléans, 8 rue Léonard de Vinci F-45072 Orléans Cedex 2, France.

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Refractories Research at Polytech’Orléans :

Design, Corrosion and Thermo-mechanical Modelling

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Research Center for Materials at High Temperature

(CRMHT - UPR 4212 CNRS)

Polytech’Orléans, 8 rue Léonard de Vinci

F-45072 Orléans Cedex 2, France

Simulation of corrosion of a refractory material by Al2O3-CaO liquid oxides

Microstructures after corrosion

  • Research group : Refractory materials, design and corrosion
  • Head : Jacques POIRIER, Tel. : 33 (0) 2 38 41 70 51, jacques.poirier@univ-orleans.fr
  • Activities
  • Corrosion of refractory materials by gases, metals and liquid oxides at high
  • temperature (between 1200 and 1700°C)
    • - Identification of the chemical reactions
    • - Transport of the liquid phases in the capillary network
    • - Modelling of the thermo chemical mechanisms associated these reactions
  •  Evolution of the mineral phases and the glasses at high temperature
  • - Micro-structural observations
    • -Thermodynamic interpretation and kinetic modelling
  •  Refractory materials (design, making) for specific applications
  • Experimental facilities :
  • Optical microscopy, scanning electron microscopy, X-ray analysis, poresizer
  • measurement, laser granulometry, specific area measurement….
  • Heating up to 1700°C, simulation of thermal shocks and corrosion equipments
  • High temperature spectroscopies (NMR, EPR, Infrared, Raman, Brillouin)

Physico-chimistry

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Brick

Joint

Scale of the REV

Scale of the structure

(equivalent material)

Scale of the

components

Laboratory of Mechanics of Systems and Processes

UMR 8106 CNRS – ENSAM – University of Orléans

Polytech’Orléans, 8 rue Léonard de Vinci

F-45072 Orléans Cedex 2, France

Researchgroup : Thermo-mechanical modelling of refractory structures

Head: Alain GASSER, Tel. : 33 (0) 2 38 49 49 36, alain.gasser@univ-orleans.fr

Objective: to build tools for numerical simulation to design structures with ceramic materials.

Principle: construction of simplified equivalent material by multi-scales approach accounting for joint expansion and nonlinear behaviour according to the temperature.

Experimental set up and simulation facilities: tension-compression (10T), Finite Element Software (Abaqus, Castem, Patran/Nastran).

Thermo-mechanics

Damage simulation of a coal-fired power plant

Lead oven modelling

(mesh, temperature field, Von Mises stresses in the metallic part)

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s

e

Competences and collaboration

The development of methods and industrial tools allowing the choice of materials (for a given application) and the numerical analysis of structures with refractory parts. These numerical tools will be powerful only if they take into account the physicochemical and thermo-mechanical material properties.

Numerical

simulation

Thermo-mechanical

behaviour

From ceramics to modelling of structures

Corrosion

Equivalent

material

Thermo-chemical

behaviour

Evolution of

mineral phases

Industrial partners in the following fields:

Raw materials, energy, metallurgy (iron and steel industry, foundries), ceramics