高防护系数SiC陶瓷制备技术研究

探讨酚醛树脂作为喷雾造粒的粘结剂和烧结的添加剂对制备无压烧结SiC陶瓷装甲的影响。理化分析结果和实弹测试结果表明,酚醛树脂在烧结过程中起到提供C源的和粘结剂的双重作用。采用该工艺制备的SiC陶瓷平均抗弯强度为460MPa,平均断裂韧性为4.8MPa·m1/2,抗底推式模拟穿甲弹最高防护系数达5.6。这表明将性能优异的无压烧结SiC陶瓷装甲应用于武器装备将是今后军工材料重点研究和发展的方向。

Research on fabricating technology of high-protection coefficient silicon carbide ceramic armor

This paper discusses effects of phenolic resin as sintering additives and binder of spray granulation on pressureless sintering of SiC ceramic armor. Physical and chemical analysis results and ballistic testing results show that phenolic resin plays dual role of provision of C source and the binder in the process of sintering. SiC ceramic armor has average flexural strength of 460 MPa, average fracture toughness of 4.8 MPa·m1/2, maximum protection coefficient of 5.6 for anti simulation penetrators. This indicates that pressureless sintering SiC ceramic should be a researching and developing direction for armor weapons and equipment in the future.