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Y2O3-MgO Composite Nano-ceramics Prepared from Core-shell Nano-powders
增强出版- 发光学报 Vol. 42, Issue 7, Pages: 997-1006(2021)
- 作者机构：
1.宁波大学 材料科学与化学工程学院，浙江 宁波 315201
2.中国科学院 宁波材料技术与工程研究所，浙江 宁波 315201
3.中国科学院大学，北京 100049
4.中国科学院 过程工程研究所，湿法冶金清洁生产技术国家工程实验室，中科院绿色过程与工程重点实验室，北京 100190
- 作者简介：
[ "江宏涛(1995-)，男，浙江平湖人，硕士研究生，2018年于南京工业大学获得学士学位，主要从事红外窗口材料的制备与研究。E-mail: jianghongtao@nimte.ac.cn" ]
[ "冯少尉(1990-)，男，山东泰安人，博士研究生，2018年于上海大学获得硕士学位，主要从事透明光功能陶瓷的研究。E-mail: swfeng@ipe.ac.cn" ]
[ "陈红兵(1964-)，男，陕西汉阴人，博士，教授，1997年于中国科学院上海光学精密机械研究所获得博士学位，主要从事新型闪烁材料、高性能弛豫铁电材料、非线性光学材料、闪烁陶瓷材料的单晶生长、性能表征与器件应用的研究。E-mail: chenhongbing@nbu.edu.cn" ]
- 基金信息：国家重点研究发展项目(2017YFC0111602;2016YFC0104502);国家自然科学基金(12074393);中科院福建创新研究院(FJCXY18040203);浙江省重点研发计划(2021C01024);浙江省自然科学基金(LQ21E020007);宁波市自然科学基金(202003N4346);内蒙古自治区科技计划(2019GG263)
DOI：10.37188/CJL.20210095
CLC：
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Hong-tao JIANG, Hai-ming QIN, Shao-wei FENG, et al. Y2O3-MgO Composite Nano-ceramics Prepared from Core-shell Nano-powders. [J]. 发光学报 42(7):997-1006(2021)
Hong-tao JIANG, Hai-ming QIN, Shao-wei FENG, et al. Y2O3-MgO Composite Nano-ceramics Prepared from Core-shell Nano-powders. [J]. 发光学报 42(7):997-1006(2021) DOI： 10.37188/CJL.20210095.
摘要
由于优异的光学和机械性能，Y,2,O,3,-MgO复相纳米陶瓷被认为是红外透明陶瓷的重要候选材料. 尽管如此，在近红外和中红外波段严重的光散射和不必要的吸收方面仍然存在巨大的挑战，这阻碍了该材料在极端恶劣环境中的应用. 在目前的工作中，先通过尿素沉淀法制备了Y,2,O,3,-MgO核壳结构纳米粉体，然后在放电等离子体烧结下制备了Y,2,O,3,-MgO复相纳米陶瓷. 通过热重和差示扫描量热法(TG/DSC)、X射线衍射和扫描电子显微镜分析了核壳结构纳米粉及复相纳米陶瓷. Y,2,O,3,-MgO核壳结构纳米粉体的尺寸约为250 nm，并且制备的陶瓷的平均晶粒尺寸约为360 nm. 透过率在6 μm处为57%，维氏硬度为820 HV. 粉末合成方法为复相纳米陶瓷提供了一种新颖的解决方案，可以轻松调节粒径和不同组分的比例.
Abstract
Y,2,O,3,-MgO composite nano-ceramics are regarded as a significant candidate of infrared transparent ceramics on account of excellent optical and mechanical properties. Nevertheless, a huge challenge remains regarding the critical optical scattering and needless absorption in the near- and mid-infrared bands, which hinders its applications in extreme harsh environments. In present work, Y,2,O,3,-MgO core-shell structure nano-powders were prepared ,via, urea precipitation method before that Y,2,O,3,-MgO composite nano-ceramics were prepared under spark plasma sintering. Thermogravimetric and differential scanning calorimetry(TG/DSC), X-ray diffraction and scanning electron microscope were performed to analyze as prepared core-shell structure nano-powders and composite nano-ceramics. The size of Y,2,O,3,-MgO core-shell structure nano-powders is about 250 nm, and average grain size of the prepared ceramics is approximately 360 nm. The transmittance is 57% at 6 μm, and the Vickers hardness is 820 HV. The powder synthesis method accomplished in present work offers a novel solution for composite nano-ceramics, which easily regulate particle size and proportion of different components.
关键词
Y2O3-MgO复相纳米陶瓷核壳结构纳米粉体尿素沉淀法放电等离子烧结
Keywords
Y2O3-MgO composite nano-ceramicscore-shell structure nano-powderurea precipitation methodspark plasma sintering
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