Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Silicon carbide whisker-toughened aluminum oxide composite ceramic material for bulletproof armor and preparation method thereof
The invention relates to the field of composite materials for bulletproof armor, in particular to a silicon carbide whisker-toughened aluminum oxide composite ceramic material for bulletproof armor and a preparation method thereof. The composite ceramic material is composed of silicon carbide whiskers with a volume fraction of 5%-80% and aluminum oxide. Microscopically, the silicon carbide whiskers are preferentially arranged in an aluminum oxide matrix along a group of parallel planes. The preparation method of the composite ceramic material comprises the following steps: carrying out freezecasting and vacuum freeze drying treatment on water-based slurry containing the silicon carbide whiskers and the aluminum oxide powder to obtain a porous green body with an oriented lamellar structure, and sequentially carrying out pressure forming, organic matter removal and sintering densification treatment on the green body to obtain the aluminum oxide composite ceramic material toughened by the silicon carbide whiskers. The fracture toughness, impact toughness and repeated impact resistance of the composite ceramic material are remarkably improved compared with single silicon carbide ceramic and single aluminum oxide ceramic; and the composite ceramic material is expected to be applied to the field of bulletproof armor to effectively improve the protection capacity and durability of the bulletproof armor.
本发明涉及防弹装甲用复合材料领域，具体为一种以碳化硅晶须增韧的防弹装甲用氧化铝复合陶瓷材料及其制备方法。该复合材料由体积分数为5％～80％的碳化硅晶须和氧化铝组成，微观上碳化硅晶须在氧化铝基体中沿一组平行的平面择优排列。该复合材料的制备方法：对含有碳化硅晶须和氧化铝粉体的水基浆料进行冷冻铸造和真空冷冻干燥处理，得到具有定向片层结构的多孔坯体，依次对坯体进行压力成型、去有机质和烧结致密化处理，得到以碳化硅晶须增韧的氧化铝复合陶瓷材料。本发明复合陶瓷材料的断裂韧性、冲击韧性和抗多次冲击性能相比于单一的碳化硅和氧化铝陶瓷均有显著提升，有望应用于防弹装甲领域，有效提升防弹装甲的防护能力和耐用性。
Silicon carbide whisker-toughened aluminum oxide composite ceramic material for bulletproof armor and preparation method thereof
The invention relates to the field of composite materials for bulletproof armor, in particular to a silicon carbide whisker-toughened aluminum oxide composite ceramic material for bulletproof armor and a preparation method thereof. The composite ceramic material is composed of silicon carbide whiskers with a volume fraction of 5%-80% and aluminum oxide. Microscopically, the silicon carbide whiskers are preferentially arranged in an aluminum oxide matrix along a group of parallel planes. The preparation method of the composite ceramic material comprises the following steps: carrying out freezecasting and vacuum freeze drying treatment on water-based slurry containing the silicon carbide whiskers and the aluminum oxide powder to obtain a porous green body with an oriented lamellar structure, and sequentially carrying out pressure forming, organic matter removal and sintering densification treatment on the green body to obtain the aluminum oxide composite ceramic material toughened by the silicon carbide whiskers. The fracture toughness, impact toughness and repeated impact resistance of the composite ceramic material are remarkably improved compared with single silicon carbide ceramic and single aluminum oxide ceramic; and the composite ceramic material is expected to be applied to the field of bulletproof armor to effectively improve the protection capacity and durability of the bulletproof armor.
本发明涉及防弹装甲用复合材料领域，具体为一种以碳化硅晶须增韧的防弹装甲用氧化铝复合陶瓷材料及其制备方法。该复合材料由体积分数为5％～80％的碳化硅晶须和氧化铝组成，微观上碳化硅晶须在氧化铝基体中沿一组平行的平面择优排列。该复合材料的制备方法：对含有碳化硅晶须和氧化铝粉体的水基浆料进行冷冻铸造和真空冷冻干燥处理，得到具有定向片层结构的多孔坯体，依次对坯体进行压力成型、去有机质和烧结致密化处理，得到以碳化硅晶须增韧的氧化铝复合陶瓷材料。本发明复合陶瓷材料的断裂韧性、冲击韧性和抗多次冲击性能相比于单一的碳化硅和氧化铝陶瓷均有显著提升，有望应用于防弹装甲领域，有效提升防弹装甲的防护能力和耐用性。
Silicon carbide whisker-toughened aluminum oxide composite ceramic material for bulletproof armor and preparation method thereof
以碳化硅晶须增韧的防弹装甲用氧化铝复合陶瓷材料及其制备方法
LIU ZENGQIAN (Autor:in) / JIAO DA (Autor:in) / ZHANG YINING (Autor:in) / ZHANG ZHEFENG (Autor:in)
27.11.2020
Patent
Elektronische Ressource
Chinesisch
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