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Thursday, May 18, 2006 - 11:20 AM
APP16.4

Characterization of AlCuFeB Quasicrystalline Coatings Sprayed by APS

H. Liao, LERMPS-UTBM, Belfort, France; A. Stihle, P. Bertrand, N. Allain, University of Technology Belfort - Montbeliard, Belfort Cedex, France; S. Kenzary, Ecole des Mines, Nancy, France; C. Coddet, University of Technology Belfort-Montbeliard, Belfort Cedex, France

 

Quasicrystal materials are solids with N fold symmetry, where N = 5 or N >6. Despite their well-known brittleness at room temperature, that limits their technological application as bulk materials, these materials demonstrate attractive physical and chemical properties such as hardness and low friction coefficient.This work was thus undertaken to study the potential application of composite coatings based on the AlCuFe quasicristalline phase for wear resistance. Aluminium and steel were considered as the matrix and AlCuFeB as the second phase. Specific powders were prepared using gas atomization and these powder were deposited on aluminium substrates using atmospheric plasma spraying.Optical microscopy and SEM with EDX analysis were employed for microstructural characterization. An X-ray diffractometer was used to identify the phases of the coating. The rate of porosity was determined from cross section image analysis and tribological test were also be performed.


Summary: This work was thus undertaken to study the potential application of composite coatings based on the AlCuFe quasicristalline phase for wear resistance. Aluminium and steel were considered as the matrix and AlCuFeB as the second phase. Specific powders were prepared using gas atomization and these powder were deposited on aluminium substrates using atmospheric plasma spraying.