@article{LI2024, 
author = {Jian-Yu LI and Jia-Qi LI and Meng MA and Chun-Yu GE and Zi-Fan ZHAO and Jing FENG},
title = {Effect of Sintering Agent Li2CO3 on Thermal-Mechanical-Optical Properties of Yttrium Tantalate Transparent Ceramics},
year = {2024},
journal = {Advanced Ceramics},
volume = {45},
number = {3},
pages = {268-278},
keywords = {YTaO4 ceramics, sintering auxiliaries, coefficient of thermal expansion, young’s modulus, transmittance},
url = {https://www.sciopen.com/article/10.16253/j.cnki.37-1226/tq.2024.03.006},
doi = {10.16253/j.cnki.37-1226/tq.2024.03.006},
abstract = {Tantalum pentoxide and yttrium oxide were used as base materials. By adding alkali metal sintering agent Li2CO3, the doped tantalate ceramic samples were prepared by high temperature solid-phase sintering. The effects of alkali metal sintering agent Li2CO3 on the physical and chemical properties of rare earth yttrium tantalate coating were studied by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), laser pulse method (LFA), thermal-mechanical analyzer (TMA) and UV-visive-near-infrared spectrophotometer. The results show that under the sintering system at 1530℃, the ceramic is compact, resulting in Li3TaO4 ceramic. With more Li2CO3 inclusion, the higher Li3TaO4 of the second phase is generated. With a stable thermal expansion coefficient, the range of 8.2-8.6×10-6K-1(900℃); The Young's modulus and hardness of the samples decreased with the increase of the added sintering aid dose. When 6% alkali metal sintering agent Li2O3 is mixed into the ceramic, the transmittance rate of YTaO4 ceramic can be stable at more than 80%, which shows that YTaO4 ceramic has superior potential of optical ceramics.}
}