文章基本信息

标题：Sol Freeze Dry Nd:YAG Nanopowder Synthesis and Sinterability Studies
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作者：Rekha Mann ; Kiranmala Laishram ; Sheikh Ashfaq Ahmed 等
期刊名称：Defence Science Journal
印刷版ISSN：0976-464X
出版年度：2015
卷号：65
期号：5
页码：418-422
语种：English
出版社：Defence Scientific Information & Documentation Centre
摘要：Citrate nitrate sol freeze dry synthesis of 2 atomic % neodymium ion doped Yttrium Aluminium Oxide (Nd:YAG) nanopowders was explored for the first time. Sol was prepared by dissolving nitrates of Al3+, Y3+ and Nd3+ keeping molar ratio to be 5: 2.94: 0.06. Total metal ion to citric acid ratio was optimised at 1 is to 0.25. Sol was freeze dried at -80 °C for 48 h. Dried mass thus obtained was calcined at 1000 °C for 2 h to give phase pure Nd:YAG as characterised by FTIR and XRD. Particles were in the size range of 35 nm - 50 nm with close to spherical morphology as observed by TEM. Nanopowder was compacted and sintered at 1700 °C for 5 h under 10-6 mbar followed by hot isostatic press at 1750 °C for 4 h under 200 MPa, to give 71 per cent transmission at 1064 nm indicating synthesis of well sinterable Nd:YAG nanopowders.
关键词：Freeze dry, Nd:YAG, transparent ceramic, vacuum sintering, HIP, Nd:YAG nanopowder, sinterability