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增强的热稳定性和高的广泛温度范围 (La_0.2Ce_0.2Nd_0.2Sm_0.2Eu_0.2) NbO₄陶

Hao Sun¹, Yunfei Wang¹, Yafei Liu¹

¹Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry of CAS, Urumqi 830011, China.

ACS applied materials & interfaces

|February 28, 2024

概括

研究人员开发了新的高热敏电阻陶,用于要求高温应用. 这些先进的材料在广泛的温度范围内提供了卓越的热稳定性和精度,克服了以前的限制.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
陶工程陶工程陶工程

背景情况:

高温应用需要先进的热电阻材料,具有卓越的热稳定性和电性能.
目前在广泛温度范围内实现高热稳定性和精度的局限性阻碍了高温应用.

研究的目的:

设计和研究使用高战略的新型高温热敏电阻陶.
为了解决现有热电阻材料中有限的热稳定性和精度的瓶,用于高温使用.

主要方法:

合成的高陶的组成 (La_0.2Ce_0.2Nd_0.2Sm_0.2Eu_0.2) 的NbO₄.
材料属性的表征,包括晶格扭曲,粒度边界,位移密度,电荷载体传输和粒度边界电阻.
在广泛的温度范围内评估热稳定性和精度 (室温至1523K).

主要成果:

高构成引发了显著的格子扭曲,粒度边界和位移密度.
这些微观结构特征增强了电荷载体传输,降低了粒边界阻力.
开发的热敏电阻陶表现出高精度和从室温到1523 K的热稳定性,经过1000小时的1173 K,老化值为0.42%,老化值低.

结论:

高率策略是开发先进的高温热敏电阻陶的有效方法.
这项工作代表了提高热敏电阻材料性能和扩大操作温度范围的突破.
新型 (La_0.2Ce_0.2Nd_0.2Sm_0.2Eu_0.2) NbO₄陶在下一代高温应用中显示出显著的前景.

关键词:

具有高的.微观结构的微观结构热稳定性的热稳定性热敏电阻陶的陶制品温度范围广泛的温度范围.

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