▎ 摘　　要

NOVELTY - A nanopowder modified silicon carbide-boron carbide complex phase ceramic comprises 90-98 wt.% silicon carbide powder and boron carbide powder, 1-5 wt.% carbon powder, 1-5 wt.% zirconium oxide powder, and 1-5 wt.% nanographene powder. The mass ratio of silicon carbide powder to boron carbide powder is 1:4-4:1. The silicon carbide powder comprises 5-20 wt.% nano-silicon carbide powder and micro-silicon carbide powder. The boron carbide powder comprises 5-20 wt.% nano-boron carbide powder and micro-boron carbide powder. USE - The nanopowder modified silicon carbide-boron carbide complex phase ceramic is useful in armor protection application e.g. helicopter protection, human body protection and armored vehicle protection applications. ADVANTAGE - The nanopowder modified silicon carbide-boron carbide complex phase ceramic has improved hardness, strength and uniformity, low sintering temperature, and high preparation efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the nanopowder modified silicon carbide-boron carbide complex phase ceramic, which involves mixing nano-silicon carbide powder, nano-boron carbide powder, carbon powder, nano-graphene powder, deionized water, and dispersant by ball milling to obtain a pre-slurry, adding zirconia powder, micro-silicon carbide powder and micro-boron carbide powder to the pre-slurry, mixing, adding an organic binder, mixing by ball milling to obtain ceramic slurry, spray granulating the ceramic slurry under controlled spray pressure, air inlet temperature and air outlet temperature to prepare granulated powder, pressure forming the granulated powder to obtain a ceramic green component, pre-sintering the ceramic green component in a high-temperature vacuum/atmosphere sintering furnace, cooling to 500-900°C, rapidly heating the ceramic green component at 500-900°C for a certain period of time, and cooling to room temperature.