Sustainable Pyrotechnics: Combustion Behavior of B₄C/Bi₂O₃ for Delay Compositions.

ABSTRACT: Understanding the combustion behavior of greener pyrotechnic delay compositions is key to developing more sustainable and efficient materials for practical applications. This study explores B₄C, a high-reactivity fuel, and Bi₂O₃, an efficient oxidizer, as eco-friendly alternatives to traditional formulations. Thermodynamic calculations guided formulation design, predicting major combustion products. After formulation, the compositions were granulated, pressed at varying pressures (64-385 MPa), burned, and analyzed for their burning rates. Results show that increasing compaction leads to a progressive decrease in burning rates, as reduced porosity shifts combustion from convective to conductive. Particle size influences combustion up to a certain limit, whil

SUBMITTER: Vianna Cantini DF 

PROVIDER: S-EPMC12854626 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature