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XIANG Dingai,GOU Li,RAN Junguo
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向定艾,苟 立,冉均国
Abstract:
Neodymium-doped yttrium aluminium garnet(Nd:YAG)powders were synthesized by co-precipitation with forward-titration and reverse-titration,respectively. The phase composition,morphology,particle size distribution of the powders were determined. The powder obtained by forward-titration was of major-phase YAG and a trace amount of YAM with a grain size about 24.7 nm,while the powder by reverse-titration was of pure-phase YAG with a grain size 26.6 nm. The average particle sizes of these powders were 1.26 mm and 1.86 mm respectively. The former was well dispersed with a narrow size distribution. Nd:YAG transparent ceramic was sintered at 1800 ℃ in vacuum. A few pores were observed in the forward-titration sample as compared with a few big holes and more pores at the grain boundaries of the reverse-titration sample. The transmission of the polished samples with thickness of 1mm were 72% and 42% at 1064 nm,65% and 35% at 400 nm respectively.
摘要:
用共沉淀法正滴和反滴工艺制备了掺钕钇铝石榴石(Nd:YAG)粉体。测试了粉体的相组成、显微形貌、粒度分布。结果表明:经1100 ℃煅烧后,正滴工艺得到粉体主相为YAG(Y3Al5O12),但有少量的YAM(Y4Al2O9),反滴工艺则得到纯的YAG。晶粒尺寸分别为24.7 nm 和26.6 nm,平均粒径分别为1.26 mm和1.86 mm,前者的粒径分布要窄,分散性要好。采用真空烧结技术在1800 ℃烧结制备了Nd:YAG陶瓷,正滴工艺制备YAG陶瓷晶粒间存在少量气孔,反滴工艺样品存在少量大的孔洞和许多晶界气孔。厚1 mm抛光样品在1064 nm处透过率分别为72%和42%,在400 nm处分别为65%和35%。
XIANG Dingai,GOU Li,RAN Junguo. Fabrication of neodymium-doped yttrium aluminium garnet transparent ceramics by co-precipitation:The effect of titration precipitation method[J]. .
向定艾,苟 立,冉均国. 共沉淀法制备掺钕钇铝石榴石透明陶瓷:滴加方式的影响 [J]. CIESC Journal.
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https://hgxb.cip.com.cn/EN/Y2011/V30/I3/597