High efficiency synthesis of Nd:YAG powder by a spray co-precipitation method for transparent ceramics
High efficiency synthesis of Nd:YAG powder by a spray co-precipitation method for transparent ceramics
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DOI：
10.1016/j.jeurceramsoc.2017.12.059
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发表时间：
2017-12
影响因子：
5.7
通讯作者：
Wei Jing;L. Fang;Yu Shengquan;Xiangbo Ji;Tao Xu;Jian Zhang;Z. Pan;Yuan Ze-rui;Bin Kang;Deng Jianguo;Wenlong Yin;Hui Huang
中科院分区：
文献类型：
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作者：
Wei Jing;L. Fang;Yu Shengquan;Xiangbo Ji;Tao Xu;Jian Zhang;Z. Pan;Yuan Ze-rui;Bin Kang;Deng Jianguo;Wenlong Yin;Hui Huang
采用喷雾共沉淀法制备了Nd：YAG纳米粉体。研究了喷雾速度和溶液浓度对煅烧前驱体晶化过程的影响。结果表明，由于Y和Al混合均匀程度的不同，采用三种不同的晶化工艺可以得到纯相的YAG。在850 °C下获得纯YAG粉末，并且相纯度持续到1600 °C。采用凝胶注模成型法和热等静压烧结法制备了透射率分别为80.2%@400 nm和83.1%@1064 nm的透明陶瓷。并对透明陶瓷的显微结构和激光性能进行了测试。获得了7.015W的最大激光输出，振荡阈值和斜率效率分别为0.235W和59.4%。
A spray co-precipitation method was developed to efficiently synthesize Nd:YAG nano-powders. The effects of spray speeds and solution concentrations on the crystallization processes of calcined precursors have been studied. The results indicated that the pure phase of YAG could be obtained by three different crystallization processes owing to different homogeneity levels of Y and Al mixing. Pure YAG powder was obtained at 850 °C and the phase purity persisted to 1600 °C. Using the obtained powders, transparent ceramics with the in-line transmittance up to 80.2%@400 nm and 83.1%@1064 nm were fabricated by gel-casting method and hot isostatic pressing sintering. Furthermore, the microstructure and laser properties of the transparent ceramics have been measured. The maximum laser output of 7.015 W has been obtained with an oscillation threshold and a slope efficiency of 0.235 W and 59.4%, respectively.