Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermal sensitive ceramic material with negative temperature coefficient in medium-high temperature region and preparation method of thermal sensitive ceramic material
The invention relates to an NTC thermistor chip and a preparation method thereof. The invention relates to a thermal sensitive ceramic material La1-xCexAlO3 with a negative temperature coefficient in a medium-high temperature region, which is prepared by a solid-phase reaction method. The preparation method comprises the following steps: strictly weighing the following raw materials in parts by mass according to a stoichiometric ratio: 12.076 to 15.222 parts of lanthanum trioxide, 4.736 to 4.778 parts of aluminum oxide and 0 to 3.188 parts of cerium dioxide; the preparation method comprises the following steps: S1, weighing materials; s2, mixing; s3, grinding; s4, pre-sintering is carried out; s5, carrying out secondary grinding; s6, tabletting and forming; s7, isostatic pressing; s8, sintering is conducted; s9, coating platinum paste; s10, annealing is carried out; and S11, welding a lead. The NTC thermistor has the advantages that the NTC thermistor has a wide temperature range (200-1400 DEG C), the resistance value and the B value are good in consistency, the resistance drift rate is smaller than 6% after the NTC thermistor is aged for 500 hours at the high temperature, stability is high, and the service life is long; in addition, the prepared powder particles are high in dispersity, not prone to agglomeration and high in chip strength.
本发明涉及一种NTC热敏电阻芯片及其制备方法。一种中高温区负温度系数热敏陶瓷材料La1‑xCexAlO3通过固相反应法制备得到。严格按照化学计量比称取以下质量份的原料：12.076‑15.222份三氧化二镧、4.736‑4.778份三氧化二铝、0‑3.188份二氧化铈;其制备方法为：S1.称料；S2.混合；S3.研磨；S4.预烧结；S5.二次研磨；S6.压片成型；S7.等静压；S8.烧结；S9.涂覆铂浆；S10.退火；S11.焊接引线。本申请的NTC热敏电阻具有较宽的温度区间（200℃~1400℃），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6%，稳定性高，使用寿命长等优点；另外，本申请制备所得的粉体颗粒分散度高，不宜团聚，芯片强度高。
Thermal sensitive ceramic material with negative temperature coefficient in medium-high temperature region and preparation method of thermal sensitive ceramic material
The invention relates to an NTC thermistor chip and a preparation method thereof. The invention relates to a thermal sensitive ceramic material La1-xCexAlO3 with a negative temperature coefficient in a medium-high temperature region, which is prepared by a solid-phase reaction method. The preparation method comprises the following steps: strictly weighing the following raw materials in parts by mass according to a stoichiometric ratio: 12.076 to 15.222 parts of lanthanum trioxide, 4.736 to 4.778 parts of aluminum oxide and 0 to 3.188 parts of cerium dioxide; the preparation method comprises the following steps: S1, weighing materials; s2, mixing; s3, grinding; s4, pre-sintering is carried out; s5, carrying out secondary grinding; s6, tabletting and forming; s7, isostatic pressing; s8, sintering is conducted; s9, coating platinum paste; s10, annealing is carried out; and S11, welding a lead. The NTC thermistor has the advantages that the NTC thermistor has a wide temperature range (200-1400 DEG C), the resistance value and the B value are good in consistency, the resistance drift rate is smaller than 6% after the NTC thermistor is aged for 500 hours at the high temperature, stability is high, and the service life is long; in addition, the prepared powder particles are high in dispersity, not prone to agglomeration and high in chip strength.
本发明涉及一种NTC热敏电阻芯片及其制备方法。一种中高温区负温度系数热敏陶瓷材料La1‑xCexAlO3通过固相反应法制备得到。严格按照化学计量比称取以下质量份的原料：12.076‑15.222份三氧化二镧、4.736‑4.778份三氧化二铝、0‑3.188份二氧化铈;其制备方法为：S1.称料；S2.混合；S3.研磨；S4.预烧结；S5.二次研磨；S6.压片成型；S7.等静压；S8.烧结；S9.涂覆铂浆；S10.退火；S11.焊接引线。本申请的NTC热敏电阻具有较宽的温度区间（200℃~1400℃），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6%，稳定性高，使用寿命长等优点；另外，本申请制备所得的粉体颗粒分散度高，不宜团聚，芯片强度高。
Thermal sensitive ceramic material with negative temperature coefficient in medium-high temperature region and preparation method of thermal sensitive ceramic material
一种中高温区负温度系数热敏陶瓷材料及其制备方法
XIE YONGXIN (Autor:in) / XUE YAN (Autor:in) / ZHAO PENGJUN (Autor:in) / ZHANG HUIMIN (Autor:in) / CHANG AIMIN (Autor:in)
26.04.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024
Preparation method of composite negative temperature coefficient thermal sensitive ceramic material
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2024