Study on the Development of Giant Magnetostrictive Materials for Applications of Dynamical Systems in Wide Frequency Range

宽频动力系统应用超磁致伸缩材料的研究

• 批准号: 08650126
• 负责人: EDA Hiroshi
• 金额: $ 1.41万
• 依托单位: Ibaraki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650126/
• 关键词: giant magnetostrictive material; giant magnetostrictive pump; high band width giant magnetostrictive material; 3 dimension vibration sensor; giant magnetostrictive torque sensor; Tb-Dy-Fe alloy; actuator; sintered giant magnetostrictive material

In this research, the following two issues have been established. These results were obtained on the basis of past research efforts regarding enhancement of the band width of the frequency response in giant magnetostrictive materials (GMM) and improvement on their dynamic characteristics.(1) Improvement of frequency response can be achieved by increase of electric resistance of GMM.A useful alternative to it is to decrease the thickness or the diameter of GMM,which theoretically enhances the response by the power of two.Main achievement of this study is that an unique method has been developed to satisfy the two means at the same time. This method was materialized by employing a technique by which magnetic powders of spin coating magnetic tapes are produced. This is a key technology in this study to fabricate fine powders of GMM whose diameter is in the range of 10 to 30 micrometers. Also mixing the GMM powders with high molecular resin significantly contributed increase of the electric resistance of the compound. As a result, the driving frequency range has been pushed from previous 1kHz to 500 kHz.(2) This method was substantiated by means of shear combination of mechanical engineering and precision engineering. That is, fabrication of thin layrs of GMM was attained by utilizing conventional dicing technology in Silicon wafers. Additional technology was incorporated by externally controlling magnetization so that the crystallization direction is chosen along <111> which is the largest magnetostriction direction. This method is called Modified Bridgman Method. Dicing a GMM ingot prepared in the aforementioned method yielded thin layrs of 0.1 mm in thickness. As a result, outstanding magneto elastic energy of E=32000 J/m^3 and stable response up to 1 MHz have been achieved.Development of novel products : as shown in Item 11, two patents have been filed based on this study.(i) Giant magnetostrictive vibration sensor(ii) Giant magnetostrictive pump

在本研究中，建立了以下两个问题。这些结果是在过去关于增强超磁致伸缩材料（GMM）的频率响应的带宽和改善其动态特性的研究努力的基础上获得的。(1)通过增加GMM的电阻可以改善其频率响应，而减小GMM的厚度或直径则可以改善其频率响应，理论上可以提高2的幂次方。该方法通过采用生产旋涂磁带的磁性粉末的技术来实现。这是本研究中制备直径在10 - 30 μ m范围内的GMM细粉的关键技术。此外，将GMM粉末与高分子树脂混合显著地有助于化合物的电阻的增加。因此，驱动频率范围已从以前的1 kHz推到500 kHz。(2)通过机械工程和精密工程的剪切组合，对该方法进行了验证。也就是说，通过在硅晶片中利用常规切割技术来实现GMM薄层的制造。通过从外部控制磁化强度来引入附加技术，使得结晶方向<111>沿着最大磁致伸缩方向沿着选择。这种方法被称为改良布里奇曼法。将用上述方法制备的GMM锭切割，得到厚度为0.1mm的薄层。结果，获得了E=32000 J/m^3的出色磁弹性能和高达1 MHz的稳定响应。新产品开发：如第11项所示，基于本研究已申请了两项专利。(i)超磁致伸缩振动传感器（ii）超磁致伸缩泵

项目成果

H., Eda・S., Yamauchi・Y., Tomita: "Surface Generation and Grinding Temperature in Ultraprecision Super High Speed Grinding" Proc.4th Int.Conf.UME(in Braunschweif). 351-355 (1997)

H.、Eda・S.、Yamauchi・Y.、Tomita：“超精密超高速磨削中的表面生成和磨削温度”Proc.4th Int.Conf.UME（布伦瑞克）351-355（1997）。

H., Eda・Y., Ymamamoto, etal: "Smart Vibration Sensor Using Giant Magnetostrictive Materials" Int.Jour.JSME,Series C. 40・2. 260-265 (1997)

H.、Eda·Y.、Ymamamoto 等人：“使用巨磁致伸缩材料的智能振动传感器”Int.Jour.JSME，系列 C. 40·265 (1997)。

江田 弘(兼編集)他多数: "生産加工の原理" 日本機会学会編(日刊工業新聞社), 369 (1998)

Hiroshi Eda（兼主编）等：日本机械学会编《生产加工原理》（日刊工业新闻），369（1998）

H.Eda etal: "Principle of production Proceses" Edited by Japan Society of Mechanical Engineers. 0-369 (1998)

H.Eda等：《生产过程原理》，日本机械工程学会编。

"Vibration Controlling System Manufactured by Giant Magnetostriction Actuator of Space Stracture" Researching Project by NASDA. 0-325 (1997)

NASDA研究项目“空间结构巨磁致伸缩驱动器制造的振动控制系统”。