Fu-Quan Tan, Qing-Guo Bai, Bin Yu, Jian-Feng Wang, Zhong-Hua Zhang
{"title":"块状纳米多孔镍钯合金的电荷控制成分/微结构调节和电化学致动性能","authors":"Fu-Quan Tan, Qing-Guo Bai, Bin Yu, Jian-Feng Wang, Zhong-Hua Zhang","doi":"10.1007/s12598-024-02831-5","DOIUrl":null,"url":null,"abstract":"<p>Bulk nanoporous (np) metallic actuators have attracted increasing attention due to their large strain and low stimulation voltage. However, studies focusing upon the combined effect of composition and structure on the actuation performance of metallic actuators are relatively scarce, and its underlying mechanism needs to be clarified. Herein, a series of bulk np-NiPd samples with different compositions and microstructures were fabricated using a dealloying-coarsening-dealloying strategy and charge-controlled electrochemical dealloying, and the process involves only one component of precursor alloy. It has been found that the np-NiPd cubes show a composition/structure-dependent mechanical property and electrochemical actuation performance. Specially, the np-Ni<sub>70</sub>Pd<sub>30</sub> sample with a homogeneously porous structure and good network connectivity exhibits significantly larger strain amplitude and faster strain rate than other hierarchically porous NiPd samples (np-Ni<sub>50</sub>Pd<sub>50</sub> and np-Ni<sub>20</sub>Pd<sub>80</sub>). Moreover, the np-Ni<sub>70</sub>Pd<sub>30</sub> sample demonstrates good actuation stability with high strain retention after hundreds of cycles. Notably, the maximum strain amplitude (1.17%) is even comparable to that of advanced lead-free piezoceramic, and the maximum strain rate exceeds those of many reported metallic actuator materials. Our work indicates that good network connectivity plays a vital role in facilitating large/fast strain response in metallic actuators.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":null,"pages":null},"PeriodicalIF":9.6000,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Charge-controlled compositional/microstructural regulations and electrochemical actuation performance of bulk nanoporous Ni-Pd alloys\",\"authors\":\"Fu-Quan Tan, Qing-Guo Bai, Bin Yu, Jian-Feng Wang, Zhong-Hua Zhang\",\"doi\":\"10.1007/s12598-024-02831-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Bulk nanoporous (np) metallic actuators have attracted increasing attention due to their large strain and low stimulation voltage. However, studies focusing upon the combined effect of composition and structure on the actuation performance of metallic actuators are relatively scarce, and its underlying mechanism needs to be clarified. Herein, a series of bulk np-NiPd samples with different compositions and microstructures were fabricated using a dealloying-coarsening-dealloying strategy and charge-controlled electrochemical dealloying, and the process involves only one component of precursor alloy. It has been found that the np-NiPd cubes show a composition/structure-dependent mechanical property and electrochemical actuation performance. Specially, the np-Ni<sub>70</sub>Pd<sub>30</sub> sample with a homogeneously porous structure and good network connectivity exhibits significantly larger strain amplitude and faster strain rate than other hierarchically porous NiPd samples (np-Ni<sub>50</sub>Pd<sub>50</sub> and np-Ni<sub>20</sub>Pd<sub>80</sub>). Moreover, the np-Ni<sub>70</sub>Pd<sub>30</sub> sample demonstrates good actuation stability with high strain retention after hundreds of cycles. Notably, the maximum strain amplitude (1.17%) is even comparable to that of advanced lead-free piezoceramic, and the maximum strain rate exceeds those of many reported metallic actuator materials. Our work indicates that good network connectivity plays a vital role in facilitating large/fast strain response in metallic actuators.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical Abstract</h3>\\n\",\"PeriodicalId\":749,\"journal\":{\"name\":\"Rare Metals\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2024-06-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rare Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s12598-024-02831-5\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12598-024-02831-5","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Charge-controlled compositional/microstructural regulations and electrochemical actuation performance of bulk nanoporous Ni-Pd alloys
Bulk nanoporous (np) metallic actuators have attracted increasing attention due to their large strain and low stimulation voltage. However, studies focusing upon the combined effect of composition and structure on the actuation performance of metallic actuators are relatively scarce, and its underlying mechanism needs to be clarified. Herein, a series of bulk np-NiPd samples with different compositions and microstructures were fabricated using a dealloying-coarsening-dealloying strategy and charge-controlled electrochemical dealloying, and the process involves only one component of precursor alloy. It has been found that the np-NiPd cubes show a composition/structure-dependent mechanical property and electrochemical actuation performance. Specially, the np-Ni70Pd30 sample with a homogeneously porous structure and good network connectivity exhibits significantly larger strain amplitude and faster strain rate than other hierarchically porous NiPd samples (np-Ni50Pd50 and np-Ni20Pd80). Moreover, the np-Ni70Pd30 sample demonstrates good actuation stability with high strain retention after hundreds of cycles. Notably, the maximum strain amplitude (1.17%) is even comparable to that of advanced lead-free piezoceramic, and the maximum strain rate exceeds those of many reported metallic actuator materials. Our work indicates that good network connectivity plays a vital role in facilitating large/fast strain response in metallic actuators.
期刊介绍:
Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.