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Wide-temperature-range negative-temperature-coefficient thermal sensitive ceramic material and preparation method thereof
The invention relates to a wide-temperature-range negative-temperature-coefficient thermal sensitive ceramic material and a preparation method thereof. The thermal sensitive ceramic material comprises the following components in percentage by weight: 58.17 to 71.47 percent of lanthanum trioxide, 20.53 to 23.01 percent of aluminum oxide, 3.98 to 15.36 percent of cerium dioxide and 1.54 to 5.94 percent of niobium pentoxide, the chemical composition of the thermal sensitive ceramic material is La (1-x) CexAl (1-y) NbyO3, x is equal to 0.05 to 0.20, and y is equal to 0.025 to 0.10. The NTC thermistor has the advantages that the NTC thermistor has an ultra-wide temperature interval (25-1500 DEG C), the resistance value and the B value are good in consistency, the resistance drift rate is smaller than 0.375% after the NTC thermistor is aged for 500 hours at the high temperature, the stability is high, the service life is long, and the like.
本发明涉及一种宽温域负温度系数热敏陶瓷材料及其制备方法。所述热敏陶瓷材料按重量百分比包括：三氧化二镧58.17‑71.47％、三氧化二铝20.53‑23.01％、二氧化铈3.98‑15.36％和五氧化二铌1.54‑5.94％，其化学组成为La1‑xCexAl1‑yNbyO3，其中，x＝0.05‑0.20，y＝0.025‑0.10。本发明的NTC热敏电阻具有超宽的温度区间(25℃～1500℃)，电阻值和B值一致性较好，在高温下老化500小时后电阻漂移率小于0.375％，稳定性高，使用寿命长等优点。
Wide-temperature-range negative-temperature-coefficient thermal sensitive ceramic material and preparation method thereof
The invention relates to a wide-temperature-range negative-temperature-coefficient thermal sensitive ceramic material and a preparation method thereof. The thermal sensitive ceramic material comprises the following components in percentage by weight: 58.17 to 71.47 percent of lanthanum trioxide, 20.53 to 23.01 percent of aluminum oxide, 3.98 to 15.36 percent of cerium dioxide and 1.54 to 5.94 percent of niobium pentoxide, the chemical composition of the thermal sensitive ceramic material is La (1-x) CexAl (1-y) NbyO3, x is equal to 0.05 to 0.20, and y is equal to 0.025 to 0.10. The NTC thermistor has the advantages that the NTC thermistor has an ultra-wide temperature interval (25-1500 DEG C), the resistance value and the B value are good in consistency, the resistance drift rate is smaller than 0.375% after the NTC thermistor is aged for 500 hours at the high temperature, the stability is high, the service life is long, and the like.
本发明涉及一种宽温域负温度系数热敏陶瓷材料及其制备方法。所述热敏陶瓷材料按重量百分比包括：三氧化二镧58.17‑71.47％、三氧化二铝20.53‑23.01％、二氧化铈3.98‑15.36％和五氧化二铌1.54‑5.94％，其化学组成为La1‑xCexAl1‑yNbyO3，其中，x＝0.05‑0.20，y＝0.025‑0.10。本发明的NTC热敏电阻具有超宽的温度区间(25℃～1500℃)，电阻值和B值一致性较好，在高温下老化500小时后电阻漂移率小于0.375％，稳定性高，使用寿命长等优点。
Wide-temperature-range negative-temperature-coefficient thermal sensitive ceramic material and preparation method thereof
一种宽温域负温度系数热敏陶瓷材料及其制备方法
XIE YONGXIN (author) / XUE YAN (author) / ZHAO PENGJUN (author) / ZHANG HUIMIN (author) / CHANG AIMIN (author)
2024-06-25
Patent
Electronic Resource
Chinese
Preparation method of composite negative temperature coefficient thermal sensitive ceramic material
| European Patent Office | 2021
| European Patent Office | 2024
| European Patent Office | 2024