Evaluation of shear strength on metal/ceramics interface by stress measurement

通过应力测量评估金属/陶瓷界面的剪切强度

• 批准号: 21760552
• 负责人: HASEGAWA Makoto
• 金额: $ 2.91万
• 依托单位: Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760552/
• 关键词: 強度; 靱性; 界面; せん断応力; 結晶方位; 蛍光分光法; 接合体; 界面強度; 応力測定

Delamination of an interface under shear loading by the residual stress of the material or mechanically applied load is one of the problem in metal/ceramics bonded interfaces such as coating materials and electric devices. In this research, modeled materials of thermal barrier coatings are formed by diffusion bonding and air plasma spray method. Stress distribution of Al_2O_3 and interfacial strain energy release rate in mode II loading condition on Ni(Pt)Al/Al_2O_3 interface were evaluated. Stress components were decided by the crystal orientation of Al_2O_3 measured from EBSD technique and stresses measured from the photo-stimulated luminescence spectrum method. Shear stress components were decided by converting the stress component.

由于材料的残余应力或机械施加的载荷，界面在剪切载荷下的分层是金属/陶瓷粘合界面（如涂层材料和电子器件）中的问题之一。本研究采用扩散键合和空气等离子喷涂的方法制备热障涂层模型材料。研究了Ni(Pt)Al/Al_2O_3界面II型加载条件下Al_2O_3的应力分布和界面应变能释放率。应力分量由EBSD法测得的Al_2O_3晶体取向和光激发发光光谱法测得的应力确定。通过转换应力分量确定剪切应力分量。