期刊
OPTICAL MATERIALS
卷 101, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.optmat.2020.109728
关键词
Nd:YAG transparent ceramics; Vacuum pre-sintering; Hot isostatic pressing; Air annealing; Microstructure
资金
- National key R&D Program of China [2017YFB0310500]
- National Natural Science Foundation of China [61575212]
- Key research project of the frontier science of the Chinese Academy of Sciences [QYZDB-SSW-JSC022]
- Act 211 Government of the RF [02. A03.21.0006]
- NSFC-RFBRNSFC-RFBR [1151101157/18-52-53039-GammaPhiEH_a]
Using the nanopowders made by a reverse co-precipitation as raw materials, neodymium doped yttrium aluminum garnet (Nd:YAG) transparent ceramics were fabricated by vacuum pre-sintering with subsequent hot isostatic pressing (HIP) post-treatment. The green bodies were pre-sintered in vacuum at 1450 degrees C-1800 degrees C for 2 h and then HIPed at 1750 degrees C for 3 h under 200 MPa Ar atmosphere. Densification behavior and microstructure of the Nd:YAG ceramics before and after the HIP-treatment were investigated. Influences of the annealing temperature on transmittance and microstructure of the Nd:YAG ceramics were also studied. The ceramics presintered at 1750 degrees C for 2 h and post-HIPed at 1750 degrees C for 3 h without any additional annealing in air were shown to have the best in-line transmittance of 79.1% at 1064 nm.
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