Patent ID: 11873257
Assignee: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  F | IPC C  F

Claim 18:
19. A process for manufacturing the ceramic body of the armor-plating component as claimed in claim 1 comprising:
a) preparing a starting feedstock including:
at least one powder of boron carbide particles, of which a median diameter of the particles is between 30 micrometers and 150 micrometers,
a first powder of silicon carbide particles, of which a median diameter of the first powder of particles is at least 1.5 times smaller than the median diameter of boron carbide grains,
a second powder of silicon carbide particles, of which a median diameter is at least 5 times smaller than the median diameter of the first powder of silicon carbide particles,
an aqueous solvent,
optionally, a carbon precursor,
optionally, shaping additives,

b) shaping the starting feedstock into the form of a preform;
c) removal from a mold after setting or drying;
d) optionally, drying the preform;
e) loading the preform, in contact with a source of silicon or a silicon alloy into a furnace;
f) firing the preform under an inert atmosphere or under vacuum, so as to infiltrate the preform with the source of molten silicon and consolidate it.