Oct 7, 2025

US12435006 - Armor plating made of fine-grain boron carbide and silicon carbide

An antiballistic armor-plating component, includes a ceramic body made of a material comprising, as percentages by volume, between 35% and 55% of silicon carbide, between 20% and 50% of boron carbide, between 15% and 35% of a metallic silicon phase or of a metallic phase including silicon.

Assignee: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN
Inventors: Jérôme Sant, Jérôme Brulin
Filing date: 2020-12-18

The patent describes an antiballistic armor-plating component made from a ceramic body that includes specific proportions of silicon carbide and boron carbide, along with a metallic silicon phase. It emphasizes the size distribution of the grains, ensuring optimal performance in ballistic protection.

Claim 1

An antiballistic armor-plating component, comprising a ceramic body made of a material comprising, as percentages by volume: between 35% and 55% of silicon carbide, between 20% and 50% of boron carbide, between 15% and 35% of a metallic silicon phase or of a metallic phase comprising silicon, between 35% and 55% of silicon carbide, between 20% and 50% of boron carbide, between 15% and 35% of a metallic silicon phase or of a metallic phase comprising silicon, and wherein, as percentages by volume of said material: the boron carbide grains with an equivalent diameter greater than 30 micrometers represent less than 5%, the boron carbide grains with an equivalent diameter less than 5 micrometers represent more than 15% and less than 35%, the silicon carbide grains with an equivalent diameter greater than 30 micrometers represent less than 5%, and the silicon carbide grains with an equivalent diameter greater than or equal to 5 micrometers and less than or equal to 30 micrometers represent between 35% and 55%. the boron carbide grains with an equivalent diameter greater than 30 micrometers represent less than 5%, the boron carbide grains with an equivalent diameter less than 5 micrometers represent more than 15% and less than 35%, the silicon carbide grains with an equivalent diameter greater than 30 micrometers represent less than 5%, and the silicon carbide grains with an equivalent diameter greater than or equal to 5 micrometers and less than or equal to 30 micrometers represent between 35% and 55%.

Google Patents

https://patents.google.com/patent/US12435006

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12435006