Fabrication and mechanical behavior of nano-grained LaGdZr2O7 transparent ceramic. Issue 22 (15th November 2021)

• Record Type: Journal Article
• Authors: Deng, Jirui; Huang, Zhangyi; Wang, Junpu; Tang, Zhe; Liang, Hao; Zhang, Lu; Lu, Tiecheng; Qi, Jianqi; Chen, Bin; He, Duanwei
• Is Part Of: Ceramics international. Volume 47:Issue 22(2021)
• Page Start: 32471
• Page End: 32475
• Publication Date: 2021-11-15
• Subjects: Nano-grained ceramic -- Mechanical properties -- LaGdZr2O7 -- Transparent ceramic -- High pressure; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.08.134
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Herein, we report transparent LaGdZr2 O7 nano-grained ceramics with an average grain size of 10 nm prepared using the high-pressure sintering method at 5.0 GPa/450 °C. These ceramics showed improved plastic deformation as compared to transparent micro-grained LaGdZr2 O7 ceramics. Moreover, the fracture toughness of the nano-grained ceramics reached up to 3.4 MPam 1/2, which is 79 % higher than that of the micro-grained samples. This improvement in the fracture toughness of the nano-grained ceramics was associated with the presence of a large number of weak grain boundaries in them.