摘要
对不同硅含量的铝合金无压浸渗Si3N4预制件制备了Si3N4/Al复合材料,并对其性能进行了研究分析。结果表明:在无压浸渗过程中,Si3N4与铝合金发生了界面反应;Si3N4/Al复合材料的断裂机制以基体的韧性撕裂和增强体的脆性断裂为主;当无压浸渗用铝合金中硅质量分数从0增加到12%时,Si3N4/Al复合材料的硬度由69HRA增加到77HRA,抗弯强度由498MPa降低至333MPa。
Si3N4/Al composites with different silicon contents were prepared by pressureless infiltration,and microstrcuture and properties of the composites were investigated.The results show that interfacial reaction happened between the aluminium alloy and Si3N4.Ductile fracture of the aluminium alloy matrix and cleavage fracture of Si3N4 were the main fracture machanism of the composites.With the silicon mass fraction of the aluminium alloy increased from 0to 12%,the hardness of the composites increased from 69HRA to 77HRA and the bending strength decreased from 498MPa to 333MPa.
出处
《理化检验（物理分册）》
CAS
2014年第6期409-412,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
基金
安徽省教育厅自然科学研究资助项目(2012AJZR0018)
