Nuclei-growth optimization for fine-grained BaTiO_3 by precision-controlled mechanical pretreatment of starting powder mixture

C. Ando; R. Yanagawa; H. Chazono

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Nuclei-growth optimization for fine-grained BaTiO_3 by precision-controlled mechanical pretreatment of starting powder mixture

机译：精细控制的起始粉末混合物的机械预处理，优化了细晶粒BaTiO_3的晶核生长

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By a solid-state process, well-crystallized BaTiO_3 (BT) particles with their average grain size below 0.2 mu m were obtained. Wet and dry mechanical pretreatment processes were combined to obtain fine particulate mixture comprising BaCO_3 and TiO_2 with the highest possible homogeneity without causing appreciable agglomeration. Degree of homogenization was quantitatively evaluated by different microscopic techniques, in an attempt to optimize nuclei-growth processes. Reaction processes were discussed on the basis of thermal analyses in conjunction with the particulate morphology. The granulometrical and crystallographical properties of the present particulate products are comparable with or even superior to commercially available high-valued products fabricated via a hydrothermal or sol-gel route.

机译：通过固态工艺，获得了平均结晶度低于0.2微米的结晶良好的BaTiO_3（BT）颗粒。将湿式和干式机械预处理工艺结合起来，以获得包含BaCO_3和TiO_2的细颗粒混合物，该混合物具有尽可能高的均一性，而不会引起明显的团聚。为了优化细胞核的生长过程，通过不同的显微镜技术对均质程度进行了定量评估。基于热分析结合颗粒形态讨论了反应过程。本发明颗粒产品的粒度和晶体学性能与通过水热或溶胶-凝胶途径制造的市售高价值产品相当甚至更好。

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来源
《Journal of Materials Research》 |2004年第12期|p.3592-3599|共8页
作者
C. Ando; R. Yanagawa; H. Chazono;
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作者单位

Material Development Department, Taiyo Yuden Co., Ltd., Haruna-machi, Gunma 370-3347, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类工程材料学;
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Nuclei-growth optimization for fine-grained BaTiO_3 by precision-controlled mechanical pretreatment of starting powder mixture

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