Preparation and Properties of ZrB2-SiC Ceramic Composites Reinforced by Carbon Nanotubes
Source abstract
Abstract
研究了用热压烧结方法制备的不同碳纳米管（CNTs）含量的ZrB2-SiC-xwt%CNTs（x=0、1.0、2.5、4.0）复合材料的工艺条件、力学性能和微观结构.用TEM观察了试样的微观结构,用SEM观察了试样断口形貌和裂纹扩展情况,并对其强韧化机制进行了分析.研究表明,碳纳米管主要分布沉积在ZrB2颗粒内部,形成内晶型结构,在CNTs含量为2.5%时,相对密度、维氏硬度和弯曲强度分别为99.6%、21.7GPa和542MPa,断裂韧性达到6.10MPa·m^（1/2）.碳纳米管加入后材料致密性提高、晶粒细化,所形成的内晶型结构是材料强度和韧性得以提高的原因.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Boron and Carbon Nanomaterials Research
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