Chemical design and chemical process for functional ceramics using ionomers

使用离聚物的功能陶瓷的化学设计和化学工艺

• 批准号: 06453119
• 负责人: KAKIHANA Masato
• 金额: $ 4.54万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06453119/
• 关键词: Ionomer; Functional ceramics; Chemical design; Chemical process; Polymerized complex method; Polymer metal complex

Central in the present work is to prepare homogeneous multicomponent gel precursors for the synthesis of various advanced ceramic materials at reduced temperatures. To reach this goal, studies under the many aspects ranging from the basic aspects of the solution chemistry closely connected to metal-chelate complex formations in various solvents to the polymer science including the field of the gel science have been systematically carried out. Of particular importance is how to prepare hetero-metallic complexes with a desired stoichiometry as a suitable molecular precursor for ceramic materials. Various spectroscopic techniques involving Raman, infrared and NMR were used as tools to gain insight into molecular species or bonding type that are formed either in a starting solution or in a polymeric product. Another important part of the work is to study the evolution of structure during the heat treatment of the gel precursors. This also was done using the above listed spectroscopic techn … More iques as well as X-ray diffraction techniques. The main results obtained were summarized as below :1) Heterometallic complexes were designed in various M-Ti-citric acid (CA) systems, where M=Ba, Sr, Pb, and Y.A unique method for the identification of heterometallic complexes in solutions was established by employing ^<13>C-NMR spectroscopy. Polyesterification between ethyleneglycol and CA was carried out in the presence of these complexes in order to obtain homogeneous multi-component gels.2) Structural evolution of multi-component ceramics was studied by use of Raman and NMR spectroscopies. Characterization of the final product was developed mainly by Raman scattering and X-ray diffraction techniques. Particular attention was paid to determining conditions of reducing the synthesis temperatures.3) Overall outcome : A scheme to prepare homogeneous multicomponent gel precursors, that can be used for the high-pure synthesis of multi-component ceramics at reduced temperatures was built up. Less

目前工作的核心是制备均匀的多组分凝胶前体，用于在降低的温度下合成各种先进陶瓷材料。为了实现这一目标，从与金属螯合物密切相关的溶液化学的基本方面进行了许多方面的研究。在包括凝胶科学领域在内的聚合物科学领域，特别重要的是如何制备具有所需化学计量的异金属配合物作为陶瓷材料的合适分子前体。拉曼、红外和核磁共振被用作深入了解起始溶液或聚合物产品中形成的分子种类或键合类型的工具，该工作的另一个重要部分是研究热处理过程中结构的演变。这也是使用上面列出的光谱技术以及 X 射线衍射技术完成的。获得的主要结果总结如下：1）以各种方式设计了异金属配合物。 M-Ti-柠檬酸(CA)系统，其中M＝Ba、Sr、Pb和Y。通过采用乙二醇和CA之间的13 C-NMR光谱法建立了用于鉴定溶液中的异金属络合物的独特方法。在这些配合物的存在下进行，以获得均匀的多组分凝胶。2）利用拉曼和光谱研究了多组分陶瓷的结构演化。最终产品的表征主要通过拉曼散射和 X 射线衍射技术来确定降低合成温度的条件。3) 总体结果：制备均质多组分凝胶前体的方案。用于在降低的温度下高纯合成多组分陶瓷的技术已经建立起来。

项目成果

H.Arima,H.Kakihana,M.Yashima,M.Yoshimura: "Polymerized complex synthesis of pure BaTiO_3 at reduced temperature" European Journal of Solid State and Inorganic Chemistry. 32. 863-871 (1995)

H.Arima、H.Kakihana、M.Yashima、M.Yoshimura：“低温下纯 BaTiO_3 的聚合复合合成”欧洲固体与无机化学杂志。

M. Arima, M. Kakihana, M. Yashima, M. Yoshimura: "Polymerized complex synthesis of pure BaTiO_3 at reduced temperature" European Journal of Solid State and Inorganic Chemistry. 32. 863-871 (1995)

M. Arima、M. Kakihana、M. Yashima、M. Yoshimura：“在降低温度下纯 BaTiO_3 的聚合复合合成”《欧洲固体与无机化学杂志》。

M.Kakihana: ""Sol-Gel Preparation of High Temperature Super-conducting Oxides"" Journal of Sol-Gel Science & Technology. 6. 7-55 (1996)

M.Kakihana：“高温超导氧化物的溶胶凝胶制备”《溶胶凝胶科学杂志》

H.Mazaki, H.Yasuoka, M.Kakihana and M.Yoshimura: ""Complex susceptibilities of Co-doped YBa_2Cu_3O_<7-d> synthesized by the polymerized complex method"" Journal of the Japan Society of Powder & Powder Metallurgy. 41. 355-360 (1994)

H.Mazaki、H.Yasuoka、M.Kakihana 和 M.Yoshimura：““通过聚合复合法合成的共掺杂 YBa_2Cu_3O_<7-d> 的复合磁化率”” 日本粉末学会杂志

M. Kakihana, M. Arima, M. Yashima M. Yoshimura, Y. Nakamura, H. Mazaki H. Yasuoka: "Polymerized complex route to the synthesis of multi-component oxides" Ceramic Transactions. 55. 65-76 (1995)

M. Kakihana、M. Arima、M. Yashima M. Yoshimura、Y. Nakamura、H. Mazaki H. Yasuoka：“合成多组分氧化物的聚合复杂路线”《陶瓷交易》。