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Materials science
ArticleName Using wollastonite as a metallomatrix composite materials filler and alloys structure modifier
ArticleAuthor Panichkin A. V.,Soymin N. Ya., Karpenyuk A. N., Ermekov G. A., Kshibekova B. B.

Centre of Earth Sciences, Metallurgy and Ore Beneficiation:

A. V. Panichkin, Vice President, e-mail:

N. Ya. Soymin, Senior Researcher

A. N. Karpenyuk, Leading Researcher

G. A. Ermekov, Senior Researcher

B. B. Kshibekova, Junior Researcher


Calculations data of the Gibbs energy of interaction reactions between wollastonite, light metals and basic alloying elements of aluminium and magnesium alloys are presented in the paper. Based on this, prediction of the most probable reactions was made. Interaction of magnesium and aluminium melts with wollastonite surface was investigated by the method of diffusion pairs. It was shown that reaction diffusion is evolving in that case. Aluminium reacts with wollastonite at the temperatures above 800 oC, therewith calcium and silicon are recovering to the elemental state and formation of Al2O3, Ca2Al(Al,Si)2O7, Ca3Al2O6, CaAl4O7, CaAl2Si2 compounds takes place. Magnesium intensively interacts with wollastonite at the temperatures above the melting point which leads to obtaining MgO, CaMgSi, Ca2SiO4 compounds. Assumptions about mechanism of light-metals base alloys structure modification by wollastonite were made. Possibility to use a needle-shaped wollastonite as a filler of alumomatrix composites was shown.

keywords Wollastonite, modifying additive, discrete filler, interaction with melt, aluminium, magnesium, reactive diffusion, intermediate phases

1. Chernoglazova T. V., Giros A. M. Promyshlennost Kazakhstana — Industry in Kazakhstan. 2000. No. 3. pp. 30–35.
2. Vollastonit (Wollastonite). Ed. V. V. Petrov and etc. Moscow: Nauka, 1982. 109 p.
3. Roskill Information Service. London, 1996. pp. 140-149.
4. Deer W. A., Howie R. A., Zussman J. M. Prirodoobrazuyushchie mineraly (Nature-formed minerals): Mir, 1965. Vol. 2. 278 p.
5. Bulleten inostrannoy kommercheskoy informatsii (Bulletin of Foreign Commercial Information). 2000. No. 86 (8130). P. 14.
6. Smiryagin A. P. Promyshlennye splavy tsvetnykh metallov (Industrial non-ferrous alloys). Moscow: Nauka, 1965. 285 p.
7. Geguzin Ya. E. Diffuzionnaya zona (Diffusion zone). Moscow: Nauka, 1979. 344 p.
8. Bokshtein B. S. Diffuziya v metallakh (Diffusion in Metals). Moscow: Metallurgy, 1978. 248 p.
9. Arkhangelskaya O. V., Kuprina V. V., Polkopina O. F. Diagrammy sostoyaniya v metallovedenii (State diagrams in Metals Science). Kiev: Naukova Dumka, 1984. pp. 35–42.

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