摘要
采用环氧树脂胶黏剂作为粘结剂,通过一种简单的模压方法,在5 MPa压力下常温固化,制备了一系列Al2O3/steel-epoxy层状复合陶瓷材料。结果显示,Al2O3/epoxy界面和steel/epoxy界面结合紧密。相比于氧化铝薄片,Al2O3/steel-epoxy层状复合陶瓷材料强度差别不大,但具有更高的断裂韧性、冲击韧性和断裂吸收能。裂纹扩展分析认为层状复合材料断裂韧性和能量吸收的提高主要得益于裂纹尖端钝化和捕获、裂纹桥连、层间脱粘和steel-epoxy层的塑性变形等机制。
A series of Al2O3/steel-epoxy laminated composites were prepared by using epoxy resin adhesive as binder via a simple process in a leaky mould at a pressure of 5MPa.The results indicate that the interfaces of Al2O3/epoxy and steel/epoxy are joined tightly,and the laminated composites have much higher fracture toughness,impact toughness and energy consumption than the Al2O3 monolith,as well as having a close strength to Al2O3.The crack propagation behavior indicates that the improvement of toughness and energy consumption attribute to the mechanisms of crack blunting and arresting,crack bridging,interface debonding,ductile deformation of steel-epoxy mesh layer.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2013年第4期453-458,共6页
Journal of Inorganic Materials
基金
Science and Technology Program of Guangdong Province of China(2010B090400330)
关键词
层状复合材料
氧化铝
界面
钢丝-环氧树脂
机械性能
韧化机制
laminated composites
alumina
interfaces
steel-epoxy
mechanical properties
toughening mechanism
