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Establishment of Net-shaping Process of Ceramics by Electrophoretic Deposition

陶瓷电泳沉积净成形工艺的建立

基本信息

批准号：
18560706
负责人：
UCHIKOSHI Tetsuo
金额：
$ 2.57万
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：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

项目摘要

The stability of alumina ethanol suspensions prepared with phosphate esters (PE) having three different alkoxy functional groups (ethyl, butyl and butoxyethyl and the corresponding effects on the electrophoretic deposition characteristics were investigated. The mechanism of particle charging was characterized by measuring the suspension pH, conductivity, zeta-potential and deposition yield under various experimental conditions. The highest stability was observed for the suspension prepared with the butoxyethyl acid phosphate though the zeta-potentials of the three suspensions were very similar. This was attributed to the steric repulsion of the alkoxy functional group. The phosphate esters made the alumina particles positively charged which allowed the cathodic deposition to occur. The zeta-potential, deposition yield and green density were functions of the PE addition amount The highest green density was obtained at the highest zeta-potential, however, the deposition rate for this PE amount was the lowest. The over-addition of PE caused decreases in the zeta potential and green density, but an increase in the adhesion of the deposit to a metal substrate. Thick deposits with smooth surfaces were obtained from the over-added PE suspension.The uniform coating and the line patterning of a conductive polypyrrole (Ppy) film on non-conductive ceramic materials was performed for use as substrates in the electrophoretic deposition (EPD) process. The Ppy was synthesized by chemical oxidation in the pyrrole (Py) solution. The line patterning of Ppy was conducted by a photo lithographic technique using Fe (III) ions as the oxidant. The direct shaping or the line pattering of alumina or zirconia particles by EPD was carried out using the Ppy films as cathodes.

研究了具有三种不同烷氧基（乙基、丁基和丁氧基乙基）的磷酸酯（PE）制备的氧化铝乙醇悬浮液的稳定性及其对电泳沉积特性的影响。颗粒充电的机制，其特征在于通过测量悬浮液的pH值，电导率，zeta电位和沉积产率在各种实验条件下。虽然三种悬浮液的zeta-电位非常相似，但对于用丁氧基乙基酸式磷酸盐制备的悬浮液观察到最高的稳定性。这归因于烷氧基官能团的空间排斥。磷酸酯使氧化铝颗粒带正电，这允许发生阴极沉积。Zeta电位、沉积产率和绿色密度是PE添加量的函数。在最高Zeta电位下获得最高的绿色密度，然而，该PE量的沉积速率最低。PE的过量添加导致zeta电位和绿色密度的降低，但存款的附着力的金属基板的增加。通过过量添加聚乙烯悬浮液，在非导电陶瓷材料上均匀涂覆导电聚吡咯（Ppy）薄膜，并在电泳沉积（EPD）过程中形成导电聚吡咯（Ppy）薄膜的线条图案。在吡咯（Py）溶液中通过化学氧化法合成了Ppy。使用Fe（III）离子作为氧化剂通过光刻技术进行Ppy的线图案化。以Ppy膜为阴极，用电泳法对氧化铝或氧化锆颗粒进行了直接成型或线图案化。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Conductive Polymer Coating on Non-conductive Ceramic Substrates for Use in Electrophoretic Deposition Process

用于电泳沉积工艺的非导电陶瓷基板上的导电聚合物涂层

DOI：
发表时间：
2008
期刊：
J. Am. Ceram. Soc 91
影响因子：
0
作者：
T. Uchikoshi;S. Furumi;N. Shirahata;T. Suzuki;Y. Sakka
通讯作者：
Y. Sakka

Patterning of Conductive Polypyrrole Electrodes on Nonconductive Ceramic Substrates for Electrophoretic Deposition Processing

用于电泳沉积加工的非导电陶瓷基板上导电聚吡咯电极的图案化

DOI：
发表时间：
2007
期刊：
影响因子：
0
作者：
A. Miki;T. Uchikoshi;T. S. Suzuki;Y. Sakka;打越哲郎,鈴木達,目義雄;T.Uchikoshi,S.Furumi,T.S.Suzuki,N.Shirahata,Y.Sakka
通讯作者：
T.Uchikoshi,S.Furumi,T.S.Suzuki,N.Shirahata,Y.Sakka

導電性ポリマーを用いた非導電性セラミック基材上へのEPD用電極パターンの形成

使用导电聚合物在非导电陶瓷基板上形成 EPD 电极图案