| Autor: |
Koo K; Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea., Kwon YT; Metal Powder Department, Korea Institute of Materials Science (KIMS), Changwon 51508, Republic of Korea., Park JY; Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea., Choa YH; Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea. |
| Jazyk: |
angličtina |
| Zdroj: |
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2024 Mar 06; Vol. 16 (9), pp. 11872-11879. Date of Electronic Publication: 2024 Feb 26. |
| DOI: |
10.1021/acsami.3c17135 |
| Abstrakt: |
Recently, there has been an escalating demand for advanced materials with superior magnetic properties, especially in the actuator domain. High coercivity ( H ci ), an essential magnetic property, is pivotal for programmable shape changes in magnetic actuators and profoundly affects their performance. In this study, a new Sm 2 Fe 17- x Cu x N 3 magnet with a high H ci was achieved by modifying the temperature of the reduction-diffusion process─lowering it from 900 to 700 °C through the introduction of Cu and finer control over the structure and morphology of the Sm 2 Fe 17- x Cu x N 3 magnetic component within the actuator composite. Consequently, the Sm 2 Fe 17- x Cu x N 3 magnet demonstrated a remarkable H ci of 11.5 kOe, eclipsing the value of 6.9 kOe attained by unalloyed Sm 2 Fe 17 N 3 at reduced temperatures. By capitalizing on the enhanced magnetic properties of the Sm 2 Fe 17- x Cu x N 3 composite and incorporating poly(ethylene glycol) into the elastomer matrix, we successfully fabricated a robust actuator. This innovative approach harnesses the strengths of hard magnets as actuators, offering stability under high-temperature conditions, precision control, longevity, wireless functionality, and energy efficiency, highlighting the vast potential of hard magnets for a range of applications. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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