Powder Metallurgical Processing and Development of Functional Composites

粉末冶金加工及功能复合材料的开发

• 批准号: 11221203
• 负责人: WATANABE Ryuzo
• 金额: $ 50.11万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11221203/
• 关键词: harmonic design of composite; particle assembling; monodisperse particles; orifice ejection method; thermoelectric materials; piezoelectric materials; powder slurry process; spark plasma sintering; パーコレーション制御; ノイズ解析

1. Preparation of monodisperse particles : The pulsated-orifice-ejection apparatus for the production of monodisperse particles was devised, and the formation details of the spherical alloy particles were clarified. 2. Function control of particle assembly : The relation between the configuration structure and the function manifestation were studied with particular emphasis on percolation and functionally graded structures. The electrical conductivity, as well as thermoelectric property, was confirmed to manifest by arraying as many as 1000 particles. 3. Particle assembling experiment : Several assembling methods such as picking up with a suction pen, flowing onto a configuration template and linear arraying into a vertical tube, were tested for an effective assemblage of spherical particles, and the manipulating specifications for each of the methods were established. 4. Composite structure formation by the slurry dispensing assemblage : A method dispensing particle slurry and arrayin … More g onto a plate to form a pre-designed composite structure configuration was devised. This method was confirmed to have several advantages for the formation of composite structures, in that it enables us to directly from a three dimensional composite structure and also give us possibilities of various materials selection and combination. 5. Bonding of the arrayed particles and function of the assemblage : Four kinds of bonding were identified for the interparticle bonding, and their formation mechanisms were clarified. The Seebeck coefficient of a linear particle assemblage of Bi-Sb alloy was measured, and a value comparable to that for single crystal was obtained. 6. Functional grading of piezoelectric ceramics : The bending characteristics of unimorph and bimorph actuators with functionally graded structures were evaluated, and we confirmed that they have sufficient bending displacement with a bonding integrity. 7. Composite structure of Al_2O_3-YAG ceramics : A eutectic alloy type of Al_2O_3-YAG ceramics was prepared by spark-plasma sintering. An isometric microstructure was found to be formed, and the products showed good high temperature strength. Less

1。单分散颗粒的制备：设计了单分散颗粒的产生的脉冲 - 脉冲 - 注射设备，并阐明了球形合金颗粒的形成细节。 2。粒子组装的功能控制：研究了构型结构与功能表现之间的关系，特别着重于渗透和功能分级结构。通过数量多达1000个颗粒来证实电导率以及热电特性。 3。粒子组装实验：对几种组装方法，例如用任务笔拾取，流向配置模板和线性阵列进入垂直管，测试了有效的球形颗粒组合，并确定了每种方法的操纵规范。 4。通过浆料分配组合形成的复合结构形成：一种将粒子浆和arrayin的方法……更多的g在板上形成，形成了预设计的复合结构构型。该方法被确认具有形成复合结构的几个优势，因为它使我们能够直接从三维复合结构中进行，还可以使我们有可能选择各种材料选择和组合。 5。阵列颗粒的键合和组合的功能：鉴定出四种键合成颗粒键合，并将其形成机理储藏。测量了BI-SB合金的线性粒子组合的塞贝克芯，并获得了与单晶相当的值。 6。压电陶瓷的功能分级：评估了具有功能分级结构的Unimorph和Bimorph驱动器的弯曲特性，我们确认它们具有具有粘结完整性的足够弯曲位移。 7。al_2O_3-yag陶瓷的复合结构：通过Spark-plasma烧结制备了电子合金类型的Al_2O_3-YAG陶瓷。发现一个等距显微结构形成，并且产物显示出良好的高温强度。较少的

项目成果

R.Watanabe, A.Kaswasaki: "Harmonic design and fabrication of functional composite materials by controlled particle assembling-Development of Assembling Methods"Materia Japan. 41-3. 162-165 (2002)

R.Watanabe、A.Kaswasaki：“通过受控粒子组装进行功能复合材料的谐波设计和制造 - 组装方法的开发”Materia Japan。

李, 渡辺, 田中, 江刺: "シリコンモールディング法による3次元マイクロ構造体の作製と微小電気機械システムへの応用"マテリアルインテグレーション. 14・8. 45-50 (2001)

Lee、Watanabe、Tanaka、Esashi：“通过硅模制方法制造三维微结构及其在微机电系统中的应用”材料集成14・8（2001）。

磯部,大森,平井: "アーク溶融法を用いて作製したAl2O3・YAG共晶材料の組織とその高温安定性"J.Ceramic Society of Japan. 109・1. 66-70 (2001)

Isobe、Omori、Hirai：“用电弧熔化法制备的Al2O3/YAG共晶材料的结构及其高温稳定性”J.日本陶瓷学会109・1（2001）。