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Theses

Contribution à l'étude de la carbonisation et de la graphitation de mélanges constitués d'un liant à base de brai de houille et de carbone granulaire : Influence de la formulation du mélange sur les propriétés des céramiques noires

Abstract : This work was dedicated to the thermal treatment of heat exchanger tubes made of black ceramics, and to the study of their characterisation. Controlled amount of sulphur is added to coal tar pitch in order to increase the mechanical properties of the tubes. This element strongly modifies the binder evolution during the thermal treatment (drop of the weight lost). Moreover, for a sulphur weight fraction higher than 10%, the graphitation of the semi-coke is strongly limited by sulphur induced crosslinking of mesogen molecules. The investigation of the thermal treatment of the tubes has shown the major role of the final temperature on the properties, while no influence of the heating rate could be observed. The dependence of the orientation of the filler grains on the properties of the tube was evidenced.
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http://docnum.univ-lorraine.fr/prive/SCD_T_2005_0139_CLAUSSE.pdf
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https://hal.univ-lorraine.fr/tel-01746523
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Submitted on : Thursday, March 29, 2018 - 10:39:35 AM
Last modification on : Wednesday, March 24, 2021 - 10:24:04 AM

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  • HAL Id : tel-01746523, version 1

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Vincent Clausse. Contribution à l'étude de la carbonisation et de la graphitation de mélanges constitués d'un liant à base de brai de houille et de carbone granulaire : Influence de la formulation du mélange sur les propriétés des céramiques noires. Autre. Université Henri Poincaré - Nancy 1, 2005. Français. ⟨NNT : 2005NAN10139⟩. ⟨tel-01746523⟩

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