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浏览/检索结果: 共2条，第1-2条 帮助 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 Laser additive manufacturing and post-heat treatment on microstructure and mechanical properties of 9Cr steel 期刊论文 INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 2022, 卷号: 198 作者:  Feng, Junyi;  Zhang, Peilei;  Jia, Zhiyuan;  Yu, Zhishui;  Fang, Chao 收藏  |  浏览/下载：20/0  |  提交时间：2022/12/22 Laser melting deposition (LMD)  9Cr steel  Different powder size  Post-heat treatment  Mechanical properties  Microstructure   Upconversion luminescence properties of Y2O3:Yb 3+, Er3+ nanostructures (EI CONFERENCE) 会议论文 De G.; Qin W.; Zhang J.; Zhang J.; Wang Y.; Cao C.; Cui Y. 收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25 Cubic Y2O3 nanostructures doped with Yb3+ and Er3+ ions were synthesized by a facile hydrothermal method. Three distinct shapes such as nanotubes  nanospheres and nanoflakes formed in the products by adjusting the pH value of reacting solution. Powder X-ray diffraction analyses indicate that all the three nanostructures are pure cubic phase  while electron microscopy measurements confirm the formation of different morphologies. These nanostructures exhibit strong visible upconversion luminescence under the excitation of a 978-nm diode laser. In Yb3+- and Er3+- codoped Y2O3 nanocrystals  the relative intensity of green emission became stronger as the size and morphology of sample changed from tubes to flakes. 2006 Elsevier B.V. All rights reserved.