A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of Ag-doped nickelate ceramic for room-temperature high-sensitivity infrared detection
The invention belongs to the technical field of functional ceramic preparation, and relates to a preparation method of Ag-doped nickelate ceramic for room-temperature high-sensitivity infrared detection, which comprises the following specific steps: mixing nickel nitrate and praseodymium nitrate serving as raw materials, citric acid serving as a chelating agent and ethylene glycol serving as a dispersing agent in an aqueous solution, stirring and heating the mixed solution to form wet gel, drying to obtain dry gel, and drying to obtain the Ag-doped nickelate ceramic for room-temperature high-sensitivity infrared detection. And grinding and calcining the dry gel to obtain Pr2NiO4 precursor powder, uniformly mixing the Pr2NiO4 precursor powder with silver nitrate, pressing, and calcining to obtain the Pr2NiO4: Agx ceramic target material. The nickelate ceramic prepared by the method is relatively low in porosity, relatively good in ceramic compactness, uniform in particle size and excellent in crystallinity; the cable has good electrical transport performance in a wide temperature range of 245-330 K (near room temperature); the noise of a resistance temperature coefficient (TCR) type infrared detector can be effectively suppressed, and the wide temperature characteristic of a slowly-deformed high TCR and spanning room temperature is ensured.
本发明属于功能陶瓷制备技术领域，涉及一种Ag掺杂室温高灵敏红外探测用镍酸盐陶瓷的制备方法，具体步骤包括以硝酸镍、硝酸镨为原料，柠檬酸作为螯合剂，乙二醇作为分散剂在水溶液中混合，搅拌加热混合溶液成湿凝胶，烘干得到干凝胶，将干凝胶研磨、煅烧得到Pr2NiO4前驱体粉末，与硝酸银混合均匀后压制、煅烧得到Pr2NiO4:Agx陶瓷靶材。该方法制得的镍酸盐陶瓷，孔隙率较低，陶瓷致密性较好，颗粒尺寸均一，结晶度优异；在245‑330 K宽广温度范围内（即室温附近）具有良好的电输运性能；能够有效抑制电阻温度系数TCR型红外探测器的噪声，保证缓变型的高TCR同时跨越室温的宽温度特性。
Preparation method of Ag-doped nickelate ceramic for room-temperature high-sensitivity infrared detection
The invention belongs to the technical field of functional ceramic preparation, and relates to a preparation method of Ag-doped nickelate ceramic for room-temperature high-sensitivity infrared detection, which comprises the following specific steps: mixing nickel nitrate and praseodymium nitrate serving as raw materials, citric acid serving as a chelating agent and ethylene glycol serving as a dispersing agent in an aqueous solution, stirring and heating the mixed solution to form wet gel, drying to obtain dry gel, and drying to obtain the Ag-doped nickelate ceramic for room-temperature high-sensitivity infrared detection. And grinding and calcining the dry gel to obtain Pr2NiO4 precursor powder, uniformly mixing the Pr2NiO4 precursor powder with silver nitrate, pressing, and calcining to obtain the Pr2NiO4: Agx ceramic target material. The nickelate ceramic prepared by the method is relatively low in porosity, relatively good in ceramic compactness, uniform in particle size and excellent in crystallinity; the cable has good electrical transport performance in a wide temperature range of 245-330 K (near room temperature); the noise of a resistance temperature coefficient (TCR) type infrared detector can be effectively suppressed, and the wide temperature characteristic of a slowly-deformed high TCR and spanning room temperature is ensured.
本发明属于功能陶瓷制备技术领域，涉及一种Ag掺杂室温高灵敏红外探测用镍酸盐陶瓷的制备方法，具体步骤包括以硝酸镍、硝酸镨为原料，柠檬酸作为螯合剂，乙二醇作为分散剂在水溶液中混合，搅拌加热混合溶液成湿凝胶，烘干得到干凝胶，将干凝胶研磨、煅烧得到Pr2NiO4前驱体粉末，与硝酸银混合均匀后压制、煅烧得到Pr2NiO4:Agx陶瓷靶材。该方法制得的镍酸盐陶瓷，孔隙率较低，陶瓷致密性较好，颗粒尺寸均一，结晶度优异；在245‑330 K宽广温度范围内（即室温附近）具有良好的电输运性能；能够有效抑制电阻温度系数TCR型红外探测器的噪声，保证缓变型的高TCR同时跨越室温的宽温度特性。
Preparation method of Ag-doped nickelate ceramic for room-temperature high-sensitivity infrared detection
一种Ag掺杂室温高灵敏红外探测用镍酸盐陶瓷的制备方法
CHEN QINGMING (author) / WANG SHAOZHENG (author) / HOU RUITING (author) / TIAN LANLAN (author) / ZHANG HUI (author) / YANG SHENG'AN (author) / LI YULE (author)
2024-10-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
G01J
Messen der Intensität, der Geschwindigkeit, der spektralen Zusammensetzung, der Polarisation, der Phase oder der Pulscharakteristik von infrarotem, sichtbarem oder ultraviolettem Licht
,
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
| European Patent Office | 2024
High-crystallinity porous rare earth nickelate film and preparation method thereof
| European Patent Office | 2023
High-temperature infrared-radiation ceramic coating and preparation method thereof
| European Patent Office | 2020
| European Patent Office | 2023