Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of composite negative temperature coefficient thermal sensitive ceramic material
The invention relates to a preparation method of a composite negative temperature coefficient thermal sensitive ceramic material, which comprises the following steps: uniformly mixing oxides of nickel, cobalt, zinc and manganese, carrying out ball milling on the mixture, a grinding medium material and a dispersing agent, drying the obtained powder, calcining, carrying out secondary ball milling, drying, and screening to obtain powder; adding the powder into a silver nitrate solution, uniformly stirring, drying and sieving to obtain composite powder, adding the obtained composite powder into a sodium borohydride solution, uniformly stirring, respectively carrying out centrifugal washing by using deionized water and ethanol, drying, adding an adhesive for granulation, carrying out compression molding, calcining the molded blank, and finally cooling to obtain the product. The prepared negative temperature coefficient thermal sensitive ceramic material has the characteristics of good compactness, high stability, high precision, excellent conductivity, suitability for industrial production and the like, the room temperature resistivity is 15.25-542.52 omega.cm, the B value is 3000-3531K, and the negative temperature coefficient thermal sensitive ceramic material is suitable for the technical fields of low-temperature measurement and the like.
本发明涉及一种复合负温度系数热敏陶瓷材料的制备方法，将镍、钴、锌和锰的氧化物混合均匀后，与磨介材料和分散剂一起球磨，将得到的粉末干燥后煅烧，然后二次球磨，烘干后过筛，得到粉料；将粉料加入硝酸银溶液中，搅拌均匀后，干燥并过筛，得到的复合粉体加入到硼氢化钠溶液中，搅拌均匀后，分别用去离子水和乙醇离心洗涤，干燥后加入粘合剂进行造粒，然后模压成型，将成型后的坯体煅烧，最后冷却，即得。本发明制得的负温度系数热敏陶瓷材料具有致密性好、稳定性高、精度高、导电性能优良、适合工业化生产等特点，室温电阻率为15.25～542.52Ω·cm，B值为3000～3531K，适合用于低温测量等技术领域。
Preparation method of composite negative temperature coefficient thermal sensitive ceramic material
The invention relates to a preparation method of a composite negative temperature coefficient thermal sensitive ceramic material, which comprises the following steps: uniformly mixing oxides of nickel, cobalt, zinc and manganese, carrying out ball milling on the mixture, a grinding medium material and a dispersing agent, drying the obtained powder, calcining, carrying out secondary ball milling, drying, and screening to obtain powder; adding the powder into a silver nitrate solution, uniformly stirring, drying and sieving to obtain composite powder, adding the obtained composite powder into a sodium borohydride solution, uniformly stirring, respectively carrying out centrifugal washing by using deionized water and ethanol, drying, adding an adhesive for granulation, carrying out compression molding, calcining the molded blank, and finally cooling to obtain the product. The prepared negative temperature coefficient thermal sensitive ceramic material has the characteristics of good compactness, high stability, high precision, excellent conductivity, suitability for industrial production and the like, the room temperature resistivity is 15.25-542.52 omega.cm, the B value is 3000-3531K, and the negative temperature coefficient thermal sensitive ceramic material is suitable for the technical fields of low-temperature measurement and the like.
本发明涉及一种复合负温度系数热敏陶瓷材料的制备方法，将镍、钴、锌和锰的氧化物混合均匀后，与磨介材料和分散剂一起球磨，将得到的粉末干燥后煅烧，然后二次球磨，烘干后过筛，得到粉料；将粉料加入硝酸银溶液中，搅拌均匀后，干燥并过筛，得到的复合粉体加入到硼氢化钠溶液中，搅拌均匀后，分别用去离子水和乙醇离心洗涤，干燥后加入粘合剂进行造粒，然后模压成型，将成型后的坯体煅烧，最后冷却，即得。本发明制得的负温度系数热敏陶瓷材料具有致密性好、稳定性高、精度高、导电性能优良、适合工业化生产等特点，室温电阻率为15.25～542.52Ω·cm，B值为3000～3531K，适合用于低温测量等技术领域。
Preparation method of composite negative temperature coefficient thermal sensitive ceramic material
一种复合负温度系数热敏陶瓷材料的制备方法
MA CHENGJIAN (Autor:in) / LI NING (Autor:in) / GAO HONG (Autor:in) / CHEN JINGWEN (Autor:in) / ZHAO YUNFENG (Autor:in) / GUAN RONGFENG (Autor:in)
13.04.2021
Patent
Elektronische Ressource
Chinesisch
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