Fabrication of YAG transparent ceramics by two-step sintering
2007; Elsevier BV; Volume: 34; Issue: 7 Linguagem: Inglês
10.1016/j.ceramint.2007.05.015
ISSN1873-3956
AutoresZhihui Chen, Jiangtao Li, Jiujun Xu, Zhang-gui Hu,
Tópico(s)Solid State Laser Technologies
ResumoYttrium aluminum garnet (YAG) nanopowders with mean particle size of about 50 nm synthesized by a modified co-precipitation method were used to sinter bulk YAG ceramic by two-step sintering method. Full densification was achieved by heating the sample up to 1800 °C followed by holding at 1550 °C for 10 h. Transparent YAG ceramics were obtained by suppressing grain-boundary migration while promoting grain-boundary diffusion during the two-step sintering process. The microstructure of the YAG ceramic is homogeneous without abnormal grain growth and the transmittance of the sintered sample is 43%.
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