Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of thermal sensitive ceramic chip with negative temperature coefficient
The invention provides a negative temperature coefficient thermal sensitive ceramic chip preparation method, which comprises: adding an additive to a water-based slurry containing a metal oxide to obtain a mixed slurry, and carrying out directional freezing on the mixed slurry to make ice crystals grow in a directional direction from the bottom of the mixed slurry to the liquid level so as to obtain the negative temperature coefficient thermal sensitive ceramic chip. The preparation method comprises the following steps: preparing a frozen green body, freeze-drying the frozen green body to obtain a lamellar ceramic green body, sintering the lamellar ceramic green body at normal pressure to obtain a lamellar ceramic block with a single spinel structure, and finally mechanically separating the ceramic block to obtain the negative temperature coefficient thermal sensitive ceramic chip. The negative temperature coefficient thermal sensitive ceramic chip prepared by the preparation method disclosed by the invention is high in density, and the preparation process is simple and easy to operate, energy-saving and environment-friendly.
本公开提供了一种负温度系数热敏陶瓷片的制备方法，该方法包括向含金属氧化物的水基浆料加入添加剂得到混合浆料，再对混合浆料进行定向冷冻，使得冰晶沿着自混合浆料的底部向液面的方向定向生长，得到冷冻坯体后进行冷冻干燥，得到片层状的陶瓷生坯，再进行常压烧结，得到呈片层状的具有单一尖晶石结构的陶瓷块体，最后对陶瓷块体进行机械分离得到负温度系数热敏陶瓷片。使用本公开制备方法制得的负温度系数热敏陶瓷片致密度高，且制备过程简单易操作，节能环保。
Preparation method of thermal sensitive ceramic chip with negative temperature coefficient
The invention provides a negative temperature coefficient thermal sensitive ceramic chip preparation method, which comprises: adding an additive to a water-based slurry containing a metal oxide to obtain a mixed slurry, and carrying out directional freezing on the mixed slurry to make ice crystals grow in a directional direction from the bottom of the mixed slurry to the liquid level so as to obtain the negative temperature coefficient thermal sensitive ceramic chip. The preparation method comprises the following steps: preparing a frozen green body, freeze-drying the frozen green body to obtain a lamellar ceramic green body, sintering the lamellar ceramic green body at normal pressure to obtain a lamellar ceramic block with a single spinel structure, and finally mechanically separating the ceramic block to obtain the negative temperature coefficient thermal sensitive ceramic chip. The negative temperature coefficient thermal sensitive ceramic chip prepared by the preparation method disclosed by the invention is high in density, and the preparation process is simple and easy to operate, energy-saving and environment-friendly.
本公开提供了一种负温度系数热敏陶瓷片的制备方法，该方法包括向含金属氧化物的水基浆料加入添加剂得到混合浆料，再对混合浆料进行定向冷冻，使得冰晶沿着自混合浆料的底部向液面的方向定向生长，得到冷冻坯体后进行冷冻干燥，得到片层状的陶瓷生坯，再进行常压烧结，得到呈片层状的具有单一尖晶石结构的陶瓷块体，最后对陶瓷块体进行机械分离得到负温度系数热敏陶瓷片。使用本公开制备方法制得的负温度系数热敏陶瓷片致密度高，且制备过程简单易操作，节能环保。
Preparation method of thermal sensitive ceramic chip with negative temperature coefficient
一种负温度系数热敏陶瓷片的制备方法
ZHAO YAN (Autor:in) / HUO ZHENZHEN (Autor:in) / LU JIAJUN (Autor:in) / ZHAO QING (Autor:in) / CHANG AIMIN (Autor:in)
08.03.2024
Patent
Elektronische Ressource
Chinesisch
Preparation method of composite negative temperature coefficient thermal sensitive ceramic material
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024