US 12,065,722 B2
Metal matrix composite material and method of manufacturing same
Joel Porret, Marin-Epagnier (CH); and Yves Winkler, Schmitten (CH)
Assigned to The Swatch Group Research and Development Ltd, Marin (CH)
Filed by The Swatch Group Research and Development Ltd, Marin (CH)
Filed on Oct. 31, 2019, as Appl. No. 16/669,616.
Claims priority of application No. 18206669 (EP), filed on Nov. 16, 2018.
Prior Publication US 2020/0157009 A1, May 21, 2020
Int. Cl. C22C 32/00 (2006.01); C04B 35/101 (2006.01); C04B 35/106 (2006.01); C04B 35/14 (2006.01); C04B 35/44 (2006.01); C04B 35/56 (2006.01); C04B 35/565 (2006.01); C04B 35/58 (2006.01); C04B 35/584 (2006.01)
CPC C22C 32/0021 (2013.01) [C04B 35/1015 (2013.01); C04B 35/106 (2013.01); C04B 35/14 (2013.01); C04B 35/44 (2013.01); C04B 35/5611 (2013.01); C04B 35/565 (2013.01); C04B 35/58071 (2013.01); C04B 35/58078 (2013.01); C04B 35/584 (2013.01); C22C 32/00 (2013.01); C22C 32/0026 (2013.01); C04B 2235/786 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A sintered composite material having a grainy appearance, the sintered composite material comprising:
ceramic particles in a range of from 5 to 50 vol. %; and
a metal matrix which is in a range of from 50 to 95 vol. % of the sintered composite material, the sintered composite material being a grainy composite material,
wherein the metal matrix is obtained from a metal powder formed by a plurality of particles having a D90 value of a cumulative function of less than 100 μm,
wherein the ceramic particles comprise corundum and having a diameter in a range from 0.1 to 2 mm are dispersed in the metal matrix, provide the sintered composite material with a grainy appearance, and form a remainder of the sintered composite material, and
wherein one or more elements of the metal matrix from metal powder are diffused into the ceramic particles to form infused ceramic particles having a diffused distribution of the one or more elements into the infused ceramic particles.