Abstract Terbium aluminum garnet (TAG) transparent ceramics were fabricated by solid-state reactive sintering in vacuum combined with hot isostatic pressing (HIP) post-treatment using tetraethoxysilane (TEOS) as sintering aid. The influences of TEOS amount on the densification, microstructure and optical properties of TAG ceramics were investigated. The in-line transmittance of the TAG ceramic with 0.2 wt% TEOS additive, which was fabricated by pre-sintering at 1700 °C for 20 h and HIP post-treating at 1700 °C for 3 h, can reach about 66% in the visible and near-infrared regions. With appropriate amount of sintering aid, the transmittance of TAG ceramics in the visible wavelength range can be improved significantly by prolonging the holding time.

中文翻译：

---

Tb3Al5O12 磁光陶瓷的固态反应烧结制备与表征

摘要 以四乙氧基硅烷（TEOS）为烧结助剂，通过真空固相反应烧结结合热等静压（HIP）后处理制备铽铝石榴石（TAG）透明陶瓷。研究了TEOS用量对TAG陶瓷致密化、微观结构和光学性能的影响。通过在 1700 °C 下预烧结 20 h 和在 1700 °C 下 HIP 后处理 3 h 制备的具有 0.2 wt% TEOS 添加剂的 TAG 陶瓷的在线透光率可以达到约 66%。可见光和近红外区域。加入适量的烧结助剂，可以通过延长保温时间，显着提高TAG陶瓷在可见波长范围内的透射率。