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浏览/检索结果: 共6条，第1-6条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Effects of yttrium on wettability and interactions between molten superalloy and SiO2-based ceramic core 会议论文 作者:  Zi, Yun;  Meng, Jie;  Zou, Mingke;  Xu, Wei;  Li, Jinguo 收藏  |  浏览/下载：6/0  |  提交时间：2020/12/18 Alumina  Aluminum oxide  Hafnium oxides  Silica  Silicon  Superalloys  Wetting  Yttrium  Yttrium aluminum garnet  ZirconiaHigh quality  High temperature  Interface reactions  SiO2-based ceramic core  Superalloy castings  Wetting angle  Y3Al5O12   Energy transfer in Y3Al5O12:Ce 3, Pr3+ and CaMoO4:Sm3, Eu 3 phosphors (EI CONFERENCE) 会议论文 Zhang J.; Wang L.; Jin Y.; Zhang X.; Hao Z.; Wang X.-J. 收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25 Non-radiative energy transfers (ET) from Ce3 to Pr3+ in Y3Al5O12:Ce3  Pr3+ and from Sm3 to Eu3 in CaMoO4:Sm3  Eu3 are studied based on photoluminescence spectroscopy and fluorescence decay patterns. The result indicates an electric dipoledipole interaction that governs ET in the LED phosphors. For Ce3 concentration of 0.01 in YAG:Ce3  Pr3+  the rate constant and critical distance are evaluated to be 4.510-36 cm 6 s-1 and 0.81 nm  respectively. An increase in the red emission line of Pr3+ relative to the yellow emission band of Ce 3  on increasing Ce3 concentration is observed. This behavior is attributed to the increase of spectral overlap integrals between Ce3 emission and Pr3+ excitation due to the fact that the yellow band shifts to the red spectral side with increasing Ce3 concentration. In CaMoO4:Sm3  Eu3  Sm 3Eu3 transfer occurs from 4G5/2 of Sm3 to 5D0 of Eu3. The rate constant of 8.510-40 cm6 s-1 and the critical transfer distance of 0.89 nm are evaluated. 2010 Elsevier B.V. All rights reserved.   复合溶胶-凝胶法制备TiAl合金表面防护涂层及其高温抗氧化性能 会议论文 第十四届全国钛及钛合金学术交流会, 上海, 2010-10-18 田晓; 贾清; 崔玉友; 杨锐 收藏  |  浏览/下载：17/0  |  提交时间：2013/08/21 γ-TiAl合金  覆层防护  陶瓷涂层  高温氧化   Characteristics of intensity modulation in single-mode microchip Nd:YAG lasers with anisotropic feedback and its application 会议论文 Proceedings of the SPIE - The International Society for Optical Engineering, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, Beijing, China, INSPEC Yidong Tan; Shulian Zhang 收藏  |  浏览/下载：5/0 Laser confocal feedback profilometry 会议论文 Proceedings of the SPIE - The International Society for Optical Engineering, Interferometry XIV: Techniques and Analysis, San Diego, CA, USA, INSPEC Xinjun Wan; Shulian Zhang; Zhou Ren 收藏  |  浏览/下载：6/0 Synthesis and characterization of Er3+: Y3Al5O12 nanocrystalline powders prepared by sol-gel method 会议论文 3rd Asian Conference on Crystal Growth and Crystal Technology (CGCT-3), OCT 16-19, 2005 作者:  Li, ZF;  Yuan, DR;  Duan, XL;  Shi, XZ;  Song, JA 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/31 preparation  YAG nanocrystalline powders  sol-gel method