High performance of La-doped Y2O3 transparent ceramics

• DOI: 10.1007/s40145-020-0392-7
• Publication Date: 2020-06-18T10:04:01Z
• Authors: Lei Zhang; Jun Yang; Hongyu Yu; Wei Pan
• Keywords: TP785-869; thermal properties; Clay industries. Ceramics. Glass; 02 engineering and technology; mechanical properties; 0210 nano-technology; Y2O3 transparent ceramics; optical transmittance; sintering kinetics

AbstractAs an optical material, Y2O3transparent ceramics are desirable for application as laser host materials. However, it is difficult to sinter and dense of Y2O3hinders the preparation of high-quality optical ceramics via traditional processes. In this work, we use La2O3as a sintering aid for fabricating high-transparency Y2O3ceramics using a vacuum sintering process. It is demonstrated that the in-line optical transmittance of 15.0 at% La-doped Y2O3at 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 Y2O3transparent ceramics are significantly improved upon the increase of La2O3sintering additives. The results indicate that a La-doped Y2O3transparent ceramic is a promising candidate for a laser host material.