涂层复合界面变形断裂过程的介观、微观研究

Application properties of a coating material conceivably depend on the interfacial bonding of the coating and substrate. Failure of a coating material is mostly induced from the interfacial cracking and the interfacial properties are controlled by the interface microstructure. In this study, it is investigated that the microstructures of the bonding interfaces of Ni/Fe, Cu/Ni, Al2O3/Ti and the interfacial fracture micro-process of a Al2O3/Ti interface, and then the relationship between the microstructure and fracture process of bonding interfaces with the macro-properties of the coating materials. The results of this study are useful for controlling and improving the interfacial properties, and the macro-properties as well, of the coating materials.

使用介观、微观研究手段观察和分析具有不同弹塑性性能的涂层和基体材料的复合界面在各种加载模式和受力状态下，界面区变形断裂的动态过程。包括界面区微结构、微缺陷变化、晶体取向变化、微裂纹的萌生、扩展和聚集等，分析和研究不同受力状态下界面变形断裂机制及其内在联系，探索建立新的界面压痕技术及其与其它界面性能评价技术的可比关系。