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个人信息Personal Information
副教授
博士生导师
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：材料科学与工程学院
学科：航空宇航制造工程. 材料加工工程. 飞行器设计
办公地点：综合实验1号楼 414B
电子邮箱：yfzu@dlut.edu.cn
Interfacial microstructure and mechanical properties of the superplastically joined TiO2-doped ZTA ceramics
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论文类型：期刊论文
发表时间：2020-03-27
发表刊物：MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
收录刊物：EI、SCIE
卷号：779
ISSN号：0921-5093
关键字：Superplastic joining; Zirconia toughened alumina; TiO2 doping; Fracture microscopy
摘要：The superplastic joining experiments of the x wt.% TiO2-doped ZTA (zirconia toughened alumina) composite ceramics (x = 0, 1, 4 and 8) were conducted at 1300 degrees C in this study. The interfacial microstructures showed that, with the increase of the TiO2 amount, the macro/micro-sized cavities, cracks, and the welding line at the joined interface were reduced gradually and finally eliminated. Moreover, the shear strength and joint efficiency of the ZTA joints were enhanced from 21.2 MPa/8.8% to 74.5 MPa/29.9%, 145.6 MPa/64.2% and 187.6 MPa/92.0% by doping 1 wt%, 4 wt% and 8 wt% TiO2 dopant, respectively. Based on the interfacial microstructure and fracture micmtopography of the TiO2-doped ZTA joints, the results were discussed in terms of the relationship between fracture mode and TiO2 amount.