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Room Temperature Oxidation Of AI-Cu-Fe and Al-Cu-Fe-Cr Quasicrystals

Published online by Cambridge University Press:  10 February 2011

Patrick J. Pinhero
Affiliation:
Materials Chemistry Program, Ames Laboratory, Ames, IA 50011 Dept. of Chemistry, Iowa State University, Ames, IA 50011
Daniel J. Sordelet
Affiliation:
Metallurgy and Ceramics Program, Ames Laboratory, Ames, IA 50011
James W. Anderegg
Affiliation:
Materials Chemistry Program, Ames Laboratory, Ames, IA 50011
Pierre Brunet
Affiliation:
GDR CINQ, Centre d’ Ingdnierie des Matériaux, EMN, Parc de Saurupt, F- 54042 Nancy
Jean-Marie Dubois
Affiliation:
GDR CINQ, Centre d’ Ingdnierie des Matériaux, EMN, Parc de Saurupt, F- 54042 Nancy
Patricia A. Thiel
Affiliation:
Materials Chemistry Program, Ames Laboratory, Ames, IA 50011 Dept. of Chemistry, Iowa State University, Ames, IA 50011
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Abstract

We have investigated formation of oxides on quasicrystalline and crystalline alloy surfaces of similar composition, in different oxidizing environments. This includes a comparison between a quaternary orthorhombic approximate of Al-Cu-Fe-Cr quasicrystal and the ternary Al-Cu-Fe quasicrystalline and crystalline phases. We noted that each sample showed the following common trends: preferential oxidation of the Al, enrichment in the concentration of Al present at the surface upon oxidation, water concentration is directly related to oxide thickness, and the oxide thickness displays a strong correlation with the bulk concentration of Al in the sample.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

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