US 11,873,257 B2
Boron carbide and silicon carbide armour
Jérôme Brulin, Saint-Martin-de-Crau (FR); and Jérôme Sant, Les Angles (FR)
Assigned to SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, Courbevoie (FR)
Appl. No. 17/632,660
Filed by SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, Courbevoie (FR)
PCT Filed Jul. 31, 2020, PCT No. PCT/EP2020/071719
§ 371(c)(1), (2) Date Feb. 3, 2022,
PCT Pub. No. WO2021/023671, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 1908958 (FR), filed on Aug. 5, 2019.
Prior Publication US 2022/0274885 A1, Sep. 1, 2022
Int. Cl. C04B 35/563 (2006.01); C04B 35/565 (2006.01); C04B 35/626 (2006.01); C04B 35/64 (2006.01); C04B 35/657 (2006.01); F41H 5/04 (2006.01)
CPC C04B 35/563 (2013.01) [C04B 35/565 (2013.01); C04B 35/6264 (2013.01); C04B 35/64 (2013.01); C04B 35/657 (2013.01); F41H 5/0414 (2013.01); C04B 2235/3821 (2013.01); C04B 2235/3826 (2013.01); C04B 2235/428 (2013.01); C04B 2235/604 (2013.01); C04B 2235/6581 (2013.01); C04B 2235/782 (2013.01); C04B 2235/786 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An antiballistic armor-plating component, comprising a ceramic body made of a material comprising, as percentages by volume:
between 20% and 75% of boron carbide,
between 5% and 30% of a metallic silicon phase or of a metallic phase comprising silicon,
between 20% and 70% of silicon carbide,
and wherein, as percentages by volume:
more than 60% of the grains with an equivalent diameter greater than 60 micrometers are boron carbide grains,
the boron carbide grains with an equivalent diameter greater than 30 micrometers represent more than 20%,
the silicon carbide grains with an equivalent diameter greater than or equal to 10 micrometers represent more than 10%, and
the silicon carbide grains with an equivalent diameter less than 10 micrometers represent more than 10%.