权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of new and high performance piezoelectric smart devices having multifunctionality

新型高性能多功能压电智能器件的开发

基本信息

批准号：
18560672
负责人：
ASANUMA Hiroshi
金额：
$ 2.5万
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：
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

In this research, new aluminum matrix composites embedded with the piezoelectric ceramic fiber which have an internal electrode were developed to realize multifunctional and high performance piezoelectric devices, and the following results were obtained. 1. The brittle metal-core piezoelectric fiber can be embedded in aluminum matrix without damage by the interphase forming/bonding method. Using this method, hollow piezoelectric fiber can be filled with the residual alloy produced during the process to form its internal electrode as well as successful embedment in the aluminum matrix. 2. As the poling - electric field relationship of this composite generates a hysteresis loop, it is clear that the embedded metal-core piezoelectric fiber is working as piezoelectric material. The waveform of the out-put voltage generated in the oscillation test and the impact test shows the possibility of strain and impact sensing. 3. As the responding waveform generated in the impact test of the aluminum matrix composite is superior to that of the resin matrix one. The performance of the device using the hollow piezoelectric fiber is as good as the one using the metal-core piezoelectric fiber. 4. The residuals of eutectic alloy and voids around the embedded piezoelectric fiber produced in the thin and patch type device can be removed by modification of the fabrication process, and the output voltage of this device reaches 6 times of that of the conventional one. 5. The compressive residual stress working on the embedded piezoelectric fiber was evaluated using the electron beam moire method, and it was shown that the piezoelectric fiber is subjected to a very high compressive stress of about 1 Gpa, and was also shown that the very high and isotropic residual stress doesn't disturb generation of the high output voltage because the value did not change even after removal of if by heat treatment.

为了实现多功能、高性能的压电器件，本研究开发了新型铝基复合材料-内嵌有内电极的压电陶瓷纤维复合材料，并取得了以下成果。1.采用界面成形/粘结法将脆性金属芯压电纤维无损伤地埋入铝基体中。利用该方法，可以将加工过程中产生的残余合金填充到中空压电纤维中，形成中空压电纤维的内电极，并成功地嵌入到铝基体中。2.由于该复合材料的极化-电场关系产生磁滞回线，很明显，嵌入的金属芯压电纤维作为压电材料工作。在振荡试验和冲击试验中产生的输出电压波形表明了应变和冲击传感的可能性。3.由于铝基复合材料在冲击试验中所产生的响应波形优于树脂基复合材料，因此铝基复合材料的冲击响应波形具有上级的特点。采用中空压电纤维的器件性能与采用金属芯压电纤维的器件性能相当。4.通过改进制作工艺，可消除贴片式压电薄膜器件中的共晶合金残留物和埋入压电纤维周围的空洞，其输出电压可达常规器件的6倍。5.使用电子束云纹法来评估作用在嵌入的压电纤维上的压缩残余应力，并且表明压电纤维受到约1Gpa的非常高的压缩应力，并且还表明非常高且各向同性的残余应力不干扰高输出电压的产生，因为即使在通过热处理去除IF之后，该值也不改变。