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人眼安全激光用Er:YAG陶瓷的致密化、显微结构与光学性能
作者:刘强1 刘婧1 2 李江2 曾燕萍2 巴学巍2 潘裕柏2 程晓农1 郭景坤2 
单位:1. 江苏大学材料科学与工程学院 江苏 镇江 210031 2. 中国科学院上海硅酸盐研究所透明光功能无机材料重点实验室 上海 200050 
关键词:稀土离子掺杂钇铝石激光陶瓷 固相反应烧结 显微结构 光学性能 
分类号:
出版年,卷(期):页码:2013,41(10):1323-1330
DOI:
摘要:
以高纯商业Y2O3、α-Al2O3和Er2O3粉体为原料,以TEOS(正硅酸乙酯)和MgO为烧结助剂,采用固相反应和真空烧结技术制备了0.5%Er:YAG透明陶瓷,并对样品的致密化行为、显微结构演化和光学性能进行了系统的研究。结果表明:1 760 ℃烧结的Er:YAG透明陶瓷(保温时间50 h)的结构均匀致密,平均晶粒尺寸约为30 μm,几乎没有晶界和晶内气孔。厚度为4 mm的Er:YAG陶瓷样品在1 200 nm处的直线透过率高达83.2%,样品的气孔率低达1.96 × 10–6。
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Transparent 0.5%Er:YAG laser ceramic was fabricated via the solid-state reaction and the vacuum-sintering technique. Commercial Y2O3, α-Al2O3, and Er2O3 powders were used as starting materials. Tetraethoxysilane (TEOS) and MgO were utilized as sintering aids. The densification behavior, the microstructure evolution and the optical properties of the prepared Er:YAG ceramics were investigated. The results show that Er:YAG transparent ceramics vacuum-sintered at 1 760 ℃ for 50 h are dense and homogeneous in structure, with the average grain size of 30 μm. For the prepared sample, the grain boundary is clean, and no second phase is observed. For the sample with the thickness of 4 mm, the in-line transmittance is 83.2% at 1 200 nm. The porosity of the sample is 1.96 × 10–6.
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基金项目:
国家自然科学基金(51002172;91022035),上海市自然科学基金(10ZR1433900)。
作者简介:
参考文献:
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