High performance of La-doped Y2O3 transparent ceramics

• 作者: Hongyu YU Jun YANG Lei ZHANG Wei PAN
• 来源期刊: 先进陶瓷（英文版）
• 年，卷（期）: 2020,（4）
• 所属期刊栏目: Research Article
• 页码范围: 493-502
• 页数: 10页
• 语种: 英文

摘要

As an optical material,Y2O3 transparent ceramics are desirable for application as laser host materials.However,it is difficult to sinter and dense of Y2O3 hinders the preparation of high-quality optical ceramics via traditional processes.In this work,we use La2O3 as a sintering aid for fabricating high-transparency Y2O3 ceramics using a vacuum sintering process.It is demonstrated that the in-line optical transmittance of 15.0 at％ La-doped Y2O3 at a wavelength of 1100 nm achieves a transmittance of 81.2％.A sintering kinetics analysis reveals that a grain-boundary-diffusion-controlled mechanism dominates the faster densification at high La3+ concentrations.It is also shown that both the mechanical and thermal properties of Y2O3 transparent ceramics are significantly improved upon the increase of La2O3 sintering additives.The results indicate that a La-doped Y2O3 transparent ceramic is a promising candidate for a laser host material.