Abstract
For production of plasma sprayed protective deposits and self-standing ceramic parts many different feedstock powders are used. The powders are very often of a composite type prepared by various technologies and mostly chemically very inhomogeneous. A method has been developed for evaluation of chemical homogeneity of both, the feedstock powders and the sprayed materials. The backscattered electron images along with the element mapping of dopant have been used as the basic measurement. The homogeneity coefficients were determined by quantitative point analysis with ZAF corrections. The results show that under all spraying parameters there is always a certain redistribution of all species leading to a better homogeneity. But generally, the more homogeneous the feedstock powder, the better the homogeneity of the deposits on both micro and macro scale.
Similar content being viewed by others
References
J. Dubský, B. Kolman, F. Kroupa, A. Macků,Proc. 5th Conference on Aluminium Oxide, Center of Material Science, Prague Inst. of Chem. Tech., Prague, 1990, p. 52.
P. Chráska, J. Dubský, B. Kolman, J. Ilavský, J. Forman,J. Therm. Spray Technol. 1992,1, 301.
P. Chráska, M. Hrabovský,Proc. ITST'92, Orlando, FL, U.S.A, ASM International, June 1992, p. 81.
K. F. J. Heinrich,X-Ray Optics and Microanalysis, 4th Intl. Conf. on X-Ray Optics and Microanalysis (R. Castaing, P. Deschamps, J. Philibert, eds.), 1966, p. 1509.
M. Hrabovský, V. Kopecký, V. Sember,Proc. 16th Symp. of Plasma Physics and Technology, Prague, April 1993, p. 243.
B. Kolman, J. Forman, J. Dubský, P. Chráska,Proc. NTST 93, Anaheim, CA, U.S.A, ASM International, June 1993, p. 353.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kolman, B., Forman, J., Dubský, J. et al. Homogeneity studies of powders and plasma sprayed deposits. Mikrochim Acta 114, 335–342 (1994). https://doi.org/10.1007/BF01244560
Issue Date:
DOI: https://doi.org/10.1007/BF01244560