THE EFFECT OF VARIOUS FACTORS ON THE PHYSICAL AND TECHNICAL CHARACTERISTICS OF B(4)C
DOI:
https://doi.org/10.52340/caat.2021.23.1.61Abstract
Purpose
The purpose of the study is to study the effect of boron isotope concentration, additives and density on the mechanical properties of boron carbide products.
Method
Ceramic samples were prepared by hot pressing at 2000 ° C and under a pressure of 40 MPa. Scanning microscopic examination was performed. The physical and mechanical characteristics of the ceramics have been determined.
Result
The effect of density, isotopic composition and additives on the physical and mechanical properties of boron carbide ceramics was determined.
Conclusion
The isotope effect on boron carbide hardness is not clearly defined. In particular, boron carbides enriched in boron isotopes do not have improved hardness compared to naturally isotopic boron carbide. The hardness of boron carbide is slightly affected by changes in the parameters of the crystalline structure, which is caused by a deviation from the natural concentration. Crack resistance is mainly influenced by the number of pores, which is one of the inhibitors of crack propagation. The hardness and modules of resilience increase with increase the density of the ceramics. The optimal amount of dopant also affects the physical and mechanical characteristics, which contributes to the refinement of the microstructure, the stability of the system and the improvement of the physical-mechanical characteristics.
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