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On the Bi2O3-Al2O3-PbO system

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On the Bi2O3-Al2O3-PbO system

F. Oudich, Nicolas David, J. M. Fiorani, Michel Vilasi

To cite this version:

F. Oudich, Nicolas David, J. M. Fiorani, Michel Vilasi. On the Bi2O3-Al2O3-PbO system. XXXIX

JEEP - 39TH EDITION OF THE JOINT EUROPEAN DAYS ON EQUILIBRIUM BETWEEN

PHASES, Mar 2013, Nancy, France. �10.1051/matecconf/20130301009�. �hal-01289980�

(2)

On the Bi

2

O

3

-Al

2

O

3

-PbO system

F. Oudich, N. David, J.M. Fiorani, and M. Vilasi

Institut Jean Lamour, UMR 7198 CNRS, Equipe 206 - Surface et interface: réactivité chimique des matériaux, Université de Lorraine, Nancy, France

The present work is dedicated to the description of the pseudo-binary Al2O3-Bi2O3 and the isothermal section at

600°C of the system Al2O3-Bi2O3-PbO according to a

Calphad approach. It takes part of the complete description of the complex system Pb-Bi-Fe-(Al,Cr)-O. Such study is of high interest for the nuclear community that aims to develop protective coatings for the MEGAPIE spallation target to prevent the T91 steel from corrosion due to contact with lead-bismuth eutectic liquid.

A survey in literature has revealed a discrepancy between equilibrium phases diagrams related to the Al2O3

-Bi2O3 system where four different compounds were

reported. Therefore, an experimental reinvestigation of the system was necessary. Samples were prepared from mixtures of powders of high purity at different compositions then annealed at different temperatures. Different techniques were used to characterize the samples: XRD, SEM (EDS and WDS) and DTA. Only two stoichiometric compounds were found to be stable at low temperature, and invariant transformations were determined. The same process was used in case of addition of PbO. A modeling of the binary is also proposed.

 

Web of Conferences DOI: 10.1051/

C

Owned by the authors, published by EDP Sciences, 2013 , 201 / 3030100901009 (2013) 3 matecconf MATEC

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2 0 , which . permits unrestricted use, distributi and reproduction in any medium, provided the original work is properly cited.

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