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 high-temperature region and preparation method of thermal sensitive ceramic material
The invention relates to a thermal sensitive ceramic material with a negative temperature coefficient in a high-temperature region and a preparation method of the thermal sensitive ceramic material. The thermal sensitive ceramic material LaAl (1-x) NbxO3 is prepared by a solid-phase reaction method. The preparation method comprises the following steps: weighing the following raw materials in percentage by weight: 73.315 to 76.112 percent of lanthanum trioxide, 20.701 to 23.888 percent of aluminum oxide and 1.540 to 5.985 percent of niobium pentoxide; 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, cold isostatic pressing; s8, sintering is conducted; s9, coating platinum paste; and S10, annealing is conducted. The thermal sensitive ceramic material with the negative temperature coefficient in the high-temperature region has a wide temperature range (600-1400 DEG C) and excellent aging stability, the resistance drift rate of a LaAl1-xNbxO3 sample is 0.906-3.352% after the thermal sensitive ceramic material is aged for 400-600 hours at the high temperature of 1000 DEG C, and the thermal sensitive ceramic material is long in service life; in addition, the prepared powder is high in particle dispersity, not prone to agglomeration and high in material strength.
本发明涉及一种高温区负温度系数热敏陶瓷材料及其制备方法。该热敏陶瓷材料LaAl1‑xNbxO3通过固相反应法制备得到。按照重量百分比称取以下的原料：三氧化二镧73.315‑76.112％、三氧化二铝20.701‑23.888％、五氧化二铌1.540‑5.985％；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.冷等静压；S8.烧结；S9.涂覆铂浆；S10.退火。本发明的高温区负温度系数热敏陶瓷材料具有较宽的温度区间(600℃‑1400℃)，并且具有优异的老化稳定性，在高温1000℃下老化400‑600小时后LaAl1‑xNbxO3样品的电阻漂移率为0.906‑3.352％，使用寿命长；另外，本发明制备所得的粉体颗粒分散度高，不宜团聚，材料强度高。
Thermal sensitive ceramic material with negative temperature coefficient in high-temperature region and preparation method of thermal sensitive ceramic material
The invention relates to a thermal sensitive ceramic material with a negative temperature coefficient in a high-temperature region and a preparation method of the thermal sensitive ceramic material. The thermal sensitive ceramic material LaAl (1-x) NbxO3 is prepared by a solid-phase reaction method. The preparation method comprises the following steps: weighing the following raw materials in percentage by weight: 73.315 to 76.112 percent of lanthanum trioxide, 20.701 to 23.888 percent of aluminum oxide and 1.540 to 5.985 percent of niobium pentoxide; 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, cold isostatic pressing; s8, sintering is conducted; s9, coating platinum paste; and S10, annealing is conducted. The thermal sensitive ceramic material with the negative temperature coefficient in the high-temperature region has a wide temperature range (600-1400 DEG C) and excellent aging stability, the resistance drift rate of a LaAl1-xNbxO3 sample is 0.906-3.352% after the thermal sensitive ceramic material is aged for 400-600 hours at the high temperature of 1000 DEG C, and the thermal sensitive ceramic material is long in service life; in addition, the prepared powder is high in particle dispersity, not prone to agglomeration and high in material strength.
本发明涉及一种高温区负温度系数热敏陶瓷材料及其制备方法。该热敏陶瓷材料LaAl1‑xNbxO3通过固相反应法制备得到。按照重量百分比称取以下的原料：三氧化二镧73.315‑76.112％、三氧化二铝20.701‑23.888％、五氧化二铌1.540‑5.985％；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.冷等静压；S8.烧结；S9.涂覆铂浆；S10.退火。本发明的高温区负温度系数热敏陶瓷材料具有较宽的温度区间(600℃‑1400℃)，并且具有优异的老化稳定性，在高温1000℃下老化400‑600小时后LaAl1‑xNbxO3样品的电阻漂移率为0.906‑3.352％，使用寿命长；另外，本发明制备所得的粉体颗粒分散度高，不宜团聚，材料强度高。
Thermal sensitive ceramic material with negative temperature coefficient in high-temperature region and preparation method of thermal sensitive ceramic material
一种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) / LIU YI (Autor:in) / ZHANG HUIMIN (Autor:in) / CHANG AIMIN (Autor:in)
05.04.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024
Preparation method of composite negative temperature coefficient thermal sensitive ceramic material
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2024