Design of dielectric and pyroelectric properties by use of spark plasma sintering method

利用放电等离子烧结法设计介电和热释电性能

• 批准号: 13650733
• 负责人: KAKEGAWA Kazuyuki
• 金额: $ 2.62万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650733/
• 关键词: Spark plasma sintering; Dielectrics; Pyroelectrics; Distribution of composition; Soft-chemistry; Perovskite; Diffusion; Composite

A method of a fabrication of pyroelectric material that exhibits high pyroelectric coefficient over a wide temperature region was developed using spark plasma sintering method (SPS) by a gradation of composition between two different compositions. Conditions were widely determined and the pyroelectric material which exhibits high pyroelectric coefficient in the region between 20℃ and 50℃ was obtained. In the beguiling of this research, similar property was attained by a diffusion treatment of a SPS-sintered body from a mixture of two compositions. By this method, crack is often caused because of the volume change by diffusion. Newly developed method cleared this problem. So, the newly developed method can be applied to a wide area. In order to obtain a material having few defects, starting material is desired to be fixed at higher temperatures. However, firing at high temperatures lowers the sinterability of the material. This was overcome by a use of nano-milling technology. Preparation of BaNd_2Ti_4O_<12>/Bi_4Ti_3O_<12>/Bi_4Nd_2Ti_4O_<12> laminated material was also succeeded using the characteristics of SPS. As a preparation of starting material, methods to fabricate nano-sized zinc oxide and niobium oxide were succeeded.

利用放电等离子烧结法（SPS），通过两种不同成分之间的成分梯度，开发了一种制备在宽温度范围内表现出高热释电系数的热释电材料的方法。通过对制备条件的广泛选择，获得了在20 ~ 50℃范围内具有高热释电系数的热释电材料。在这项研究的欺骗，获得了类似的性能，通过扩散处理的SPS烧结体从两种成分的混合物。用这种方法，裂纹往往是由于扩散引起的体积变化而引起的。新开发的方法解决了这个问题。因此，新开发的方法可以应用于广泛的领域。为了获得具有很少缺陷的材料，期望在较高温度下固定起始材料。然而，在高温下烧制降低了材料的可烧结性。这是通过使用纳米研磨技术来克服的。利用SPS的特点成功制备了<12>BaNd_2Ti_4O_3/<12>Bi_4Ti_3O_3/Bi_4Nd_2Ti_4O_3<12>叠层材料。以纳米氧化锌和纳米氧化铌为原料，成功地制备了纳米氧化锌和纳米氧化铌。

项目成果

N.Uekawa, M.Suzuki, T.Ohmiya, F.Mori, Y.J.Wu, K.Kakegawa: "Synthesis of Rutile and Anatase TiO_2 Nanoparticles from Ti-peroxy Compound Aqueous Solution with Polyols"J.Mater.Res.. 18巻. 797-803 (2003)

N.Uekawa，M.Suzuki，T.Ohmiya，F.Mori，Y.J.Wu，K.Kakekawa：“从钛过氧化合物水溶液与多元醇合成金红石和锐钛矿 TiO_2 纳米颗粒”J.Mater.Res.. 18 卷.797-803 (2003)

N. Uekawa, J. Kajiwara, N. Mochizuki, K. Kakegawa, Y. Sasaki: "Synthesis of ZnO Nanoparticles by Decomposition of Zinc Peroxide"Chemistry Letters. 2001巻. 606-607 (2001)

N. Uekawa、J. Kajiwara、N. Mochizuki、K. Kakekawa、Y. Sasaki：“通过过氧化锌的分解合成 ZnO 纳米颗粒”，《化学快报》2001 年卷 606-607（2001 年）。

N. Uekawa, T. Sukegawa, K. Kakegawa, Y. Sasaki: "Synthesis of Lead Nickel Niobate - Barium Titanate System by Oxidation of Polyethylene Glycol-Cation Complex"Journal of the American Ceramic Society. 85巻2号. 329-334 (2002)

N. Uekawa、T. Sukekawa、K. Kakekawa、Y. Sasaki：“通过聚乙二醇阳离子复合物的氧化合成铌酸铅镍 - 钛酸钡体系”，《美国陶瓷学会杂志》，第 85 卷，第 2 期。 329-334 (2002)

K.Kakekawa, N.Uekawa, Y.J.Wu, Y.Sasaki: "Change in the compositional distribution in perovskite solid solutions during the sintering by PS"Mater.Sci.Eng.. B99. 11-14 (2003)

K.Kakekawa、N.Uekawa、Y.J.Wu、Y.Sasaki：“PS 烧结过程中钙钛矿固溶体成分分布的变化”Mater.Sci.Eng.. B99。

N.Uekawa, N.Mochizuki, J.Kajiwara, F.Mori, K.Kakegawa: "Nonstoichiometric Properties of Zinc Oxide Nanoparticles Prepared by Decomposition of Zinc Peroxide"Phys.Chem.Chem.Phys.. 5. 929-935 (2003)

N.Uekawa、N.Mochizuki、J.Kajiwara、F.Mori、K.Kakekawa：“过氧化锌分解制备的氧化锌纳米粒子的非化学计量性质”Phys.Chem.Chem.Phys.. 5. 929-935 (2003)