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Effect of mechanical activation on the crystallization and properties of iron-rich glass materials

Published online by Cambridge University Press:  04 March 2013

Claudia M. García-Hernández ,
Jorge López-Cuevas  and
José L. Rodríguez-Galicia
Claudia M. García-Hernández
Affiliation:
Centro de Investigación y de Estudios Avanzados del IPN, Unidad Saltillo, Carr. Saltillo-Monterrey, Km. 13.5, C.P. 25900, Ramos Arizpe, Coahuila, México.
Jorge López-Cuevas
Affiliation:
Centro de Investigación y de Estudios Avanzados del IPN, Unidad Saltillo, Carr. Saltillo-Monterrey, Km. 13.5, C.P. 25900, Ramos Arizpe, Coahuila, México.
José L. Rodríguez-Galicia
Affiliation:
Centro de Investigación y de Estudios Avanzados del IPN, Unidad Saltillo, Carr. Saltillo-Monterrey, Km. 13.5, C.P. 25900, Ramos Arizpe, Coahuila, México.
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Abstract

The effect of mechanical activation (MA) of the precursor mixture of raw materials and/or the parent glass, on the microstructure and physical and mechanical properties of iron-rich glass-ceramic materials of the system SiO2-B2O3-BaO-Fe2O3, has been studied. MA of the materials is conducted for 0, 2 or 6h using a high energy attrition milling device. Crystallization treatments are given to the parent glass at 650, 750 or 850°C for 5h. Crystallization of the samples is promoted by increased treatment temperature, and especially also by double MA at 850°C. With increasing crystallization temperature, both the density and the compressive strength increase, while porosity decreases. However, at 850°C, prolonged MA decreases both the density and the compressive strength due to an increment in porosity caused by the growth of the BaFe12O19 crystals.

Keywords

Femechanical alloyingsynthesis
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1485: Symposium 7d – Advanced Structural Materials—2012 , 2012 , pp. 89 - 94
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

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