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A platform for research: civil engineering, architecture and urbanism
Silicon carbide bulletproof ceramic and preparation method thereof
The invention provides silicon carbide bulletproof ceramic and a preparation method thereof. The silicon carbide bulletproof ceramic is prepared from the following raw materials in parts by weight: 80 parts of alpha-SiC powder, 20-30 parts of boron carbide powder, 0.8-1 part of a first dispersing agent, 0.5-0.8 part of a second dispersing agent, 10-18 parts of an organic aid and 0.5-2 parts of a sintering aid. The preparation method comprises the following steps: dispersing powder, proportioning, performing water-based spray granulation, performing dry pressing, performing secondary densification pressing, performing shrinkage sintering and performing pressureless sintering. By adopting a secondary densification pressing and shrinkage sintering process, a ceramic biscuit is densified for multiple times, the close bonding capacity among particles is improved, and the effect of reinforcing phase boron carbide is fully exerted, so that the toughness and the strength performance of the silicon carbide ceramic are improved. Experiments show that compared with a traditional process, the bending strength of the bulletproof ceramic is improved by 11.63%, the Vickers hardness is improved by 8.35%, the fracture toughness is improved by 15.9%, and the comprehensive mechanical property is remarkably improved.
本发明提供一种碳化硅防弹陶瓷及其制备方法，包括以下重量份原料：α‑SiC粉体80份，碳化硼粉体20‑30份，第一分散剂0.8‑1份，第二分散剂0.5‑0.8份，有机助剂10‑18份，烧结助剂0.5‑2份。通过粉体分散、配料、水基喷雾造粒、干压成型、二次致密化压制、收缩烧结和无压烧结工艺制作而成。通过采用二次致密化压制和收缩烧结工艺，对陶瓷素坯进行多次致密化，提高颗粒间紧密结合能力，充分发挥增强相碳化硼的作用，以提高碳化硅陶瓷的韧性和强度性能。实验表明，相较于传统工艺，本方案防弹陶瓷的抗弯强度提高了11.63%，维氏硬度提高了8.35%，断裂韧性提高了15.9%，综合力学性能有了显著提高。
Silicon carbide bulletproof ceramic and preparation method thereof
The invention provides silicon carbide bulletproof ceramic and a preparation method thereof. The silicon carbide bulletproof ceramic is prepared from the following raw materials in parts by weight: 80 parts of alpha-SiC powder, 20-30 parts of boron carbide powder, 0.8-1 part of a first dispersing agent, 0.5-0.8 part of a second dispersing agent, 10-18 parts of an organic aid and 0.5-2 parts of a sintering aid. The preparation method comprises the following steps: dispersing powder, proportioning, performing water-based spray granulation, performing dry pressing, performing secondary densification pressing, performing shrinkage sintering and performing pressureless sintering. By adopting a secondary densification pressing and shrinkage sintering process, a ceramic biscuit is densified for multiple times, the close bonding capacity among particles is improved, and the effect of reinforcing phase boron carbide is fully exerted, so that the toughness and the strength performance of the silicon carbide ceramic are improved. Experiments show that compared with a traditional process, the bending strength of the bulletproof ceramic is improved by 11.63%, the Vickers hardness is improved by 8.35%, the fracture toughness is improved by 15.9%, and the comprehensive mechanical property is remarkably improved.
本发明提供一种碳化硅防弹陶瓷及其制备方法，包括以下重量份原料：α‑SiC粉体80份，碳化硼粉体20‑30份，第一分散剂0.8‑1份，第二分散剂0.5‑0.8份，有机助剂10‑18份，烧结助剂0.5‑2份。通过粉体分散、配料、水基喷雾造粒、干压成型、二次致密化压制、收缩烧结和无压烧结工艺制作而成。通过采用二次致密化压制和收缩烧结工艺，对陶瓷素坯进行多次致密化，提高颗粒间紧密结合能力，充分发挥增强相碳化硼的作用，以提高碳化硅陶瓷的韧性和强度性能。实验表明，相较于传统工艺，本方案防弹陶瓷的抗弯强度提高了11.63%，维氏硬度提高了8.35%，断裂韧性提高了15.9%，综合力学性能有了显著提高。
Silicon carbide bulletproof ceramic and preparation method thereof
一种碳化硅防弹陶瓷及其制备方法
WANG BIN (author) / HOU JINGYUAN (author) / WANG CHENJIAO (author) / LIU PENG (author) / LI HUI (author) / HUANG KAI (author) / JING CHANGLONG (author)
2024-05-10
Patent
Electronic Resource
Chinese
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