Effect of ball-milling granulation with PVB adhesive on the sinterability of co-precipitated Yb:YAG nanopowders
Effect of ball-milling granulation with PVB adhesive on the sinterability of co-precipitated Yb:YAG nanopowders
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PVB胶粘剂球磨造粒对共沉淀Yb:YAG纳米粉体烧结性能的影响
DOI：
10.1016/j.jallcom.2013.12.022
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发表时间：
2014-03
影响因子：
6.2
通讯作者：
Fenfen Jiang
中科院分区：
文献类型：
--
作者：
Xingtao Chen;Tiecheng Lu;Nian Wei;Zhongwen Lu;Wei Zhang;Benyuan Ma;Yongbin Guan;Wei Liu;Fenfen Jiang
利用共沉淀原料粉，对聚乙烯醇丁醛（PVB）胶粘剂球磨造粒工艺参数进行了优化。评价了PVB的用量（0-1.5 wt%）和球磨时间（0-20 h）对所得粉末的相组成、粒度和形貌的影响。结果表明：球磨10 h破坏了颗粒的烧结颈，0.5 wt% PVB胶粘剂有利于球磨造粒，提高了造粒粉的分散性；结果表明，用0.5 wt% PVB球磨10 h后，粉末具有较高的烧结活性。利用这些颗粒状纳米粉体，在1750℃真空烧结15 h，得到了密度为理论密度99.6%的近乎全致密的Yb:YAG陶瓷。Yb:YAG陶瓷在可见光区透光率高达80%，在1030 nm处透光率高达82%。样品呈无孔结构，平均晶粒尺寸约为9 μm。实验证明，PVB胶粘剂球磨造粒是提高纳米粉体烧结性能的一种简便有效的方法。
Ball-milling granulation parameters with polyvinyl butyral (PVB) adhesive have been optimized for the preparation of granulated Yb:YAG powders, using the co-precipitated raw powders. The influence of the amount of PVB (0–1.5 wt%) and ball-milling time (0–20 h) on the phase composition, particle size and morphologies of resultant powders is evaluated. The results show that ball milling for 10 h breaks the sintering neck of the particles while 0.5 wt% PVB adhesive contributes to ball-milling granulation and boosts the dispersion of granulated powders. It is found that when ball-milled with 0.5 wt% PVB for 10 h, the powders show high sintering activity. Using these granulated nanopowders, nearly full dense Yb:YAG ceramic with 99.6% of theoretical density was obtained by vacuum sintering at 1750 °C for 15 h. The optical transmittance of Yb:YAG ceramic reaches up to 80% in the visible light region and 82% at 1030 nm. The sample exhibit pore-free structures and the average grain size is about 9 μm. Experimental evidence proved that ball-milling granulation with PVB adhesive could be an effective and facile method to improve sinterability of nanopowders.
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影响因子：
2.2
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影响因子：
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作者：
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影响因子：
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作者：
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作者：
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