Grain refininf agent for cast magnesium products

Details Grain refininf agent for cast magnesium products Grain refininf agent for cast magnesium products

B - Operations, Transporting

22

D

B22D 27/20 (2006.01) B02C 17/00 (2006.01) B02C 19/16 (2006.01) B22F 9/04 (2006.01) C22C 1/02 (2006.01) C22C 1/03 (2006.01) C22C 1/10 (2006.01) C22C 23/00 (2006.01)

Patent

CA 2386334

The invention relates to a grain refining agent for cast magnesium products, comprising particles formed of a matrix of a ductile material, in which are uniformly dispersed nucleation particles of at least one element or compound selected from the group consisting of zirconium, silicon carbide, titanium carbide and mixtures of carbon with silicon or titanium, the nucleation particles having an average particle size of 0.05 to 5 µm. The dispersion of the nucleation particles within a matrix of ductile material improves their wettability, overcomes problems caused by gas adsorption on the surface of the particles and reduces their agglomeration during inoculation into molten magnesium or alloy thereof.

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