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Preparation method of lanthanum calcium manganese oxide and metal platinum multiphase composite ceramic material
The invention belongs to the field of functional ceramics, and relates to a preparation method of a lanthanum-calcium-manganese-oxygen and metal platinum multiphase composite ceramic material, which comprises the following specific steps: by taking lanthanum nitrate hexahydrate, calcium nitrate tetrahydrate and manganese nitrate tetrahydrate as raw materials, citric acid monohydrate as a chelating agent and methanol as a solvent, stirring and dissolving, adding and mixing by taking ethylene glycol as a dispersing agent, and uniformly stirring; stirring and heating the mixed solution, drying to obtain dry gel, grinding and calcining the dry gel to obtain precursor powder, uniformly mixing the precursor powder with platinum powder, pressing, and calcining to obtain the La1-xCaxMnO3: Pty composite ceramic block material. The metal-insulator transition temperature of the La1-xCaxMnO3: Pty composite ceramic prepared by the method is kept in a range close to room temperature, the resistivity is reduced, the resistance temperature coefficient and the magnetoresistance are remarkably improved, and the application possibility of the La1-xCaxMnO3: Pty composite ceramic in the fields of temperature detection, magnetic storage and the like is greatly improved.
本专利属于功能陶瓷领域，涉及一种镧钙锰氧与金属铂多相复合陶瓷材料的制备方法，具体步骤包括以六水硝酸镧、四水硝酸钙、四水硝酸锰为原料，一水柠檬酸作为螯合剂，甲醇作为溶剂，搅拌溶解，以乙二醇作为分散剂加入混合，搅拌加热混合溶液，烘干得到干凝胶，将干凝胶研磨、煅烧得到前驱体粉末，与铂粉混合均匀后压制、煅烧得到La1‑xCaxMnO3:Pty复合陶瓷块材。通过该方法制备的La1‑xCaxMnO3:Pty复合陶瓷金属‑绝缘体转变温度保持在接近室温的范围，降低了电阻率，显著地提高了电阻温度系数和磁电阻，大大提高La1‑xCaxMnO3:Pty复合陶瓷在温度探测和磁存储等领域应用的可能性。
Preparation method of lanthanum calcium manganese oxide and metal platinum multiphase composite ceramic material
The invention belongs to the field of functional ceramics, and relates to a preparation method of a lanthanum-calcium-manganese-oxygen and metal platinum multiphase composite ceramic material, which comprises the following specific steps: by taking lanthanum nitrate hexahydrate, calcium nitrate tetrahydrate and manganese nitrate tetrahydrate as raw materials, citric acid monohydrate as a chelating agent and methanol as a solvent, stirring and dissolving, adding and mixing by taking ethylene glycol as a dispersing agent, and uniformly stirring; stirring and heating the mixed solution, drying to obtain dry gel, grinding and calcining the dry gel to obtain precursor powder, uniformly mixing the precursor powder with platinum powder, pressing, and calcining to obtain the La1-xCaxMnO3: Pty composite ceramic block material. The metal-insulator transition temperature of the La1-xCaxMnO3: Pty composite ceramic prepared by the method is kept in a range close to room temperature, the resistivity is reduced, the resistance temperature coefficient and the magnetoresistance are remarkably improved, and the application possibility of the La1-xCaxMnO3: Pty composite ceramic in the fields of temperature detection, magnetic storage and the like is greatly improved.
本专利属于功能陶瓷领域，涉及一种镧钙锰氧与金属铂多相复合陶瓷材料的制备方法，具体步骤包括以六水硝酸镧、四水硝酸钙、四水硝酸锰为原料，一水柠檬酸作为螯合剂，甲醇作为溶剂，搅拌溶解，以乙二醇作为分散剂加入混合，搅拌加热混合溶液，烘干得到干凝胶，将干凝胶研磨、煅烧得到前驱体粉末，与铂粉混合均匀后压制、煅烧得到La1‑xCaxMnO3:Pty复合陶瓷块材。通过该方法制备的La1‑xCaxMnO3:Pty复合陶瓷金属‑绝缘体转变温度保持在接近室温的范围，降低了电阻率，显著地提高了电阻温度系数和磁电阻，大大提高La1‑xCaxMnO3:Pty复合陶瓷在温度探测和磁存储等领域应用的可能性。
Preparation method of lanthanum calcium manganese oxide and metal platinum multiphase composite ceramic material
一种镧钙锰氧与金属铂多相复合陶瓷材料的制备方法
CHEN QINGMING (author) / WANG SHAOZHENG (author) / LI YULE (author) / HOU RUITING (author) / TIAN LANLAN (author) / ZHANG HUI (author) / YANG SHENG'AN (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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