目的 传统的锰基热敏传感器的测温区间在室温以上,无法满足军用包装在宽温域环境下温度精确监测的需求,开发面向军用包装的高精度宽温域热敏传感器,助力军用包装智能化。方法 采取经针对性改进后的固相法,引入Fe元素对Mn-Co-Ni三元体系NTC热敏传感器进行掺杂,制备4组灵敏度高与稳定性优的热敏传感器。结果 4组组分物相准确,且均在特定中低温范围（-20~60 ℃）呈现出良好的NTC效应。其中编号为A2的Fe0.6Ni0.3Co0.9Mn1.2O4组分在温度区间内具有高精度的使用优势,且温域适应性好,其在反应灵敏度的关键指标热敏常数B25-50值上高达到3 839.59 K,还具有室温电阻低（4.961 kΩ）的低能耗优势。结论 成功制备出了综合电性能较好的热敏传感器,Fe元素对Mn-Co-Ni三元体系的掺入对电性能带来较高的提升,器件在特定温度区间具有较好的灵敏度和稳定性,在军用包装环境智能监测领域具有极大的应用前景。
Abstract
Traditional manganese-based thermistors operate above room temperature, which can not meet the demand for accurate temperature monitoring of military packaging in wide-temperature environments. Therefore, it is necessary to develop high-precision, wide-temperature-range thermistors for military packaging to promote its intelligentization. In this study, Fe elements were doped into the NTC (Negative Temperature Coefficient) thermistor with a Mn-Co-Ni ternary system by a specifically improved solid-phase method, and four groups of sensors with high sensitivity and excellent stability were fabricated. The results showed that the four groups of components had accurate phases and exhibited good NTC effects in a specific medium-low temperature range (-20-60 ℃). Among them, the Fe0.6Ni0.3Co0.9Mn1.2O4 component (coded as A2) stood out with high precision and good temperature adaptability. Its thermosensitive constant B25-50 value, a key indicator of reaction sensitivity, reached as high as 3 839.59 K, and it also had the advantage of low energy consumption due to its low room-temperature resistance (4.961 kΩ). A thermistor with excellent comprehensive electrical properties is successfully prepared. The doping of Fe elements into the Mn-Co-Ni ternary system significantly improves the electrical properties of the sensor. The device exhibits good sensitivity and stability in the specific temperature range, thus holding great application prospects in the field of intelligent environmental monitoring for military packaging.
关键词
热敏电阻 /
军用包装 /
负温度系数 /
Fe掺杂 /
B值 /
传感器
Key words
thermistor /
military packaging /
Negative Temperature Coefficient (NTC) /
Fe doping /
B value /
sensor
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