经过分级的基于KNN的无超声波转换器用于广泛温度无损测试成像
Yi Quan1, Jie Xing2, Chunlong Fei1
1Faculty of Intergrated Circuit, Xidian University, Xi'an 710071, China.
ACS applied materials & interfaces
|March 19, 2025
概括
这项研究开发了先进的无酸 (KNN) 陶和超声波传感器,用于高分辨率非破坏性测试 (NDT) 成像. 这些新设备保持了高达120°C的性能,使NDT能够在具有挑战性的热环境中使用.
科学领域:
- 材料科学 材料科学 材料科学
- 非破坏性测试 (NDT) 是一种非破坏性测试.
- 超声波是一种超声波.
背景情况:
- 开发无压电材料对于先进的NDT应用至关重要.
- 现有的超声波传感器在高温环境中面临限制.
- 基于酸盐酸盐 (KNN) 的陶具有广泛温度应用的潜力.
研究的目的:
- 为了优化材料和设备的广泛温度,高分辨率的NDT成像.
- 开发和整合等级无KNN陶与宽温度超声波传感器.
- 为了证明在超过100°C的高温下NDT成像的可行性.
主要方法:
- 工程等级的KNN陶具有多个晶相 (O-T/R-O-T/R-T) 以提高热稳定性和压电性能.
- 设计和制造的超声波传感器使用优化分级KNN陶.
- 评估了传感器性能,包括压电常数偏差和成像能力,在30°C至120°C的温度范围内.
主要成果:
- 经过分级的KNN陶表现出最小的压电常量偏差 (<3.5%),即使在140°C.
- 制造的超声波传感器表现出强大的热稳定性和30°C至120°C的高分辨率成像.
- 在测试的温度谱中取得了成功的C-扫描成像,验证了在各种热条件下NDT的潜力.
结论:
- 这项研究首次成功展示了基于KNN的超声波传感器在100°C以上的广泛温度成像能力.
- 经过分级KNN陶和专用传感器的综合方法克服了在NDT中以前的温度限制.
- 这些发现代表了NDT在高温工业和操作环境中的应用的重大进步.
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