Design of novel ceramics with crystalline-oriented layers produced by electrophoretic deposition under a high magnetic field

高磁场下电泳沉积制备的具有晶体取向层的新型陶瓷的设计

• 批准号: 16560597
• 负责人: SUZUKI Tohru
• 金额: $ 2.3万
• 依托单位: National Institute for Materials Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560597/
• 关键词: strong magnetic field; electric field; ceramics; orientation; laminate; suspension; dispersion; strength; 磁場; 微粒子

Anisotropic designs of ceramics have attracted attention, because of their improved electrical, mechanical and other properties. Texture structured ceramics have been produced by hot forming, Templated Grain Growth (TGG) and so on. However, shape and orientation direction are limited, when using these techniques. On the other hand, we have reported that development of texture can be controlled by slip casting in a strong magnetic field followed by heating even for diamagnetic ceramics such as alumina, titania, zinc oxide and so on. Electrophoretic deposition (EPD) is also applied to shaping textured ceramics from stable colloidal suspension which is placed in a strong magnetic field. We demonstrate in this study that laminar ceramics with different crystalline-oriented layer are produced by EPD in a strong magnetic field. The alumina powder was dispersed in a suspension by using an ultrasonic homogenizer and a magnetic stirrer. The suspension was placed in a superconducting magnet, and then a strong magnetic field of 10T was applied to the suspension to rotate each particle by a magnetic torque attributed to the anisotropic susceptibility. The direction of the electric field relative to the magnetic field was altered to control the dominant crystal faces. The sintering was conducted at 1873K for 2h in air without a magnetic field. We confirmed in our previous reports that c-axis of alumina with the hexagonal unit cell was parallel to the direction of magnetic field. The composite with different crystalline-oriented layer was fabricated by alternately changing the angle between the directions of the magnetic and electric fields layer by layer during EPD in 10T. Bending strength of laminar composite depended on the direction of multilayered microstructure. Crack was propagated by bending in a zig-zag path. The crack path was along the direction of orientation in each layer.

陶瓷的各向异性设计因其改进的电气、机械和其他性能而引起了人们的关注。织构结构陶瓷可通过热成型、模板晶粒生长（TGG）等方法生产。然而，当使用这些技术时，形状和取向方向受到限制。另一方面，我们报道了即使对于氧化铝、二氧化钛、氧化锌等反磁性陶瓷，也可以通过在强磁场中注浆成型并随后加热来控制织构的发展。电泳沉积 (EPD) 也适用于将稳定的胶体悬浮液置于强磁场中来成型纹理陶瓷。我们在这项研究中证明了具有不同晶体取向层的层状陶瓷是通过强磁场中的 EPD 生产的。使用超声波均化器和磁力搅拌器将氧化铝粉末分散在悬浮液中。将悬浮液放置在超导磁体中，然后向悬浮液施加10T的强磁场，以通过归因于各向异性磁化率的磁扭矩旋转每个颗粒。改变电场相对于磁场的方向以控制主要晶面。烧结在没有磁场的空气中在1873K下进行2小时。我们在之前的报告中证实，具有六方晶胞的氧化铝的c轴与磁场方向平行。在10T的EPD过程中，通过逐层交替改变磁场和电场方向之间的角度，制备了具有不同晶体取向层的复合材料。层状复合材料的弯曲强度取决于多层微观结构的方向。裂纹通过锯齿形路径弯曲而扩展。裂纹路径沿着每层的取向方向。

项目成果

Fabrication of Textured Ceramics by Electrophoretic Deposition under a Strong Magnetic Field

强磁场下电泳沉积制备织构陶瓷

• 发表时间: 2005
• 期刊: MATERIAL STAGE 5
• 作者: Tohru S.;Suzuki;Hiroshi Tsuda;鈴木 達;Jung-Ryul Lee;鈴木 達;Yoshio Akimune;鈴木 達;李 政律;鈴木 達;津田 浩;打越 哲郎;津田 浩;Tohru S. Suzuki;津田 浩;T.S.Suzuki;Tohru S. Suzuki;津田 浩;Tohru S. Suzuki;李 政律;Tohru S. Suzuki;Hiroshi Tsuda;T.Uchikoshi
• 通讯作者: T.Uchikoshi

Control of texture in feeble magnetic ceramics using colloidal processing in a strong magnetic field

利用强磁场中的胶体加工控制弱磁性陶瓷的织构

• 发表时间: 2006
• 期刊: J. Jpn. Soc. Powder Powder Metallugy 53
• 作者: 會田哲夫;高辻則夫;松木賢司;小原卓;鎌土重晴;鈴木 達;T.S.Suzuki;佐藤 寿;T.S.Suzuki;會田 哲夫;T.Uchikoshi;Hisashi Sato;T.Uchikoshi;Tetsuo Aida;T.S.Suzuki;津田 浩;津田 浩;打越 哲郎;津田 浩;Tohru S. Suzuki
• 通讯作者: Tohru S. Suzuki

微粒子分散を利用した固化成形プロセスと組織制御

利用细颗粒分散的凝固成型过程和结构控制

• 发表时间: 2006
• 期刊: E＆G((株)工業調査会) 11
• 作者: 會田哲夫;高辻則夫;松木賢司;小原卓;鎌土重晴;鈴木 達;T.S.Suzuki;佐藤 寿;T.S.Suzuki;會田 哲夫;T.Uchikoshi;Hisashi Sato;T.Uchikoshi;Tetsuo Aida;T.S.Suzuki;津田 浩;津田 浩;打越 哲郎;津田 浩;Tohru S. Suzuki;Hiroshi Tsuda;Tohru S. Suzuki;Hiroshi Tsuda;T.S.Suzuki;津田 浩;T.S.Suzuki;津田 浩;T.Uchikoshi;津田 浩;鈴木 達
• 通讯作者: 鈴木 達

強磁場によるセラミックス結晶配向制御プロセス

利用强磁场控制陶瓷晶体取向的工艺

• 发表时间: 2005
• 期刊: 工業材料 53・8
• 作者: Tohru S.;Suzuki;Hiroshi Tsuda;鈴木 達;Jung-Ryul Lee;鈴木 達;Yoshio Akimune;鈴木 達
• 通讯作者: 鈴木 達

Control of texture in alumina by colloidal processing in a strong magnetic field

• DOI: 10.1016/j.stam.2006.01.014
• 发表时间: 2006-01
• 期刊: Science and Technology of Advanced Materials
• 影响因子: 5.5
• 作者: Tohru S. Suzuki;T. Uchikoshi;Y. Sakka