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Preparation method of single-phase five-component high-entropy perovskite manganese oxide ceramic
The invention discloses a preparation method for synthesizing a single-phase five-component high-entropy perovskite manganese oxide ceramic by a sol-gel method. The preparation method comprises the following specific steps: dissolving lanthanum nitrate hexahydrate, praseodymium nitrate hexahydrate, neodymium nitrate, samarium nitrate hexahydrate, calcium nitrate tetrahydrate, manganese nitrate and citric acid in a mixed solvent of deionized water and ethylene glycol; wherein citric acid serves as a complexing agent, ethylene glycol serves as a dispersing agent, wet gel is formed through heating and stirring, and the wet gel is put into a drying box to be dried; and finally, grinding and pre-sintering the gel to obtain ceramic powder, grinding the ceramic powder, carrying out tabletting treatment on the ceramic powder, and carrying out secondary sintering to obtain the single-phase five-component high-entropy perovskite manganese oxide ceramic. The sol-gel method is adopted, it is guaranteed that all components are evenly mixed, the prepared ceramic is good in density and uniform in component and grain size, in addition, the method is simple in process and good in repeatability, selected chemical reagents are low in price and easy to obtain, the requirement for production equipment is not high, and the method is suitable for large-scale preparation.
本发明公开一种溶胶凝胶法合成单相五组元高熵钙钛矿锰氧化物陶瓷的制备方法，具体步骤包括将六水硝酸镧、六水硝酸镨、硝酸钕、六水硝酸钐、四水硝酸钙、硝酸锰、柠檬酸溶于去离子水和乙二醇的混合溶剂中；其中，柠檬酸作为络合剂，乙二醇为分散剂，加热搅拌形成湿凝胶，放入干燥箱烘干；最后将凝胶研磨，预烧处理得到陶瓷粉体，将陶瓷粉体研磨并对其进行压片处理，再进行二次烧结即得单相五组元高熵钙钛矿锰氧化物陶瓷。本发明采用了溶胶凝胶法，保证了各组分均匀混合，制备的陶瓷致密度好，成分、晶粒尺寸均一，此外，本法工艺简单，重复性好，选用的化学试剂价格低廉易得，对生产设备的要求不高，适用于大规模制备。
Preparation method of single-phase five-component high-entropy perovskite manganese oxide ceramic
The invention discloses a preparation method for synthesizing a single-phase five-component high-entropy perovskite manganese oxide ceramic by a sol-gel method. The preparation method comprises the following specific steps: dissolving lanthanum nitrate hexahydrate, praseodymium nitrate hexahydrate, neodymium nitrate, samarium nitrate hexahydrate, calcium nitrate tetrahydrate, manganese nitrate and citric acid in a mixed solvent of deionized water and ethylene glycol; wherein citric acid serves as a complexing agent, ethylene glycol serves as a dispersing agent, wet gel is formed through heating and stirring, and the wet gel is put into a drying box to be dried; and finally, grinding and pre-sintering the gel to obtain ceramic powder, grinding the ceramic powder, carrying out tabletting treatment on the ceramic powder, and carrying out secondary sintering to obtain the single-phase five-component high-entropy perovskite manganese oxide ceramic. The sol-gel method is adopted, it is guaranteed that all components are evenly mixed, the prepared ceramic is good in density and uniform in component and grain size, in addition, the method is simple in process and good in repeatability, selected chemical reagents are low in price and easy to obtain, the requirement for production equipment is not high, and the method is suitable for large-scale preparation.
本发明公开一种溶胶凝胶法合成单相五组元高熵钙钛矿锰氧化物陶瓷的制备方法，具体步骤包括将六水硝酸镧、六水硝酸镨、硝酸钕、六水硝酸钐、四水硝酸钙、硝酸锰、柠檬酸溶于去离子水和乙二醇的混合溶剂中；其中，柠檬酸作为络合剂，乙二醇为分散剂，加热搅拌形成湿凝胶，放入干燥箱烘干；最后将凝胶研磨，预烧处理得到陶瓷粉体，将陶瓷粉体研磨并对其进行压片处理，再进行二次烧结即得单相五组元高熵钙钛矿锰氧化物陶瓷。本发明采用了溶胶凝胶法，保证了各组分均匀混合，制备的陶瓷致密度好，成分、晶粒尺寸均一，此外，本法工艺简单，重复性好，选用的化学试剂价格低廉易得，对生产设备的要求不高，适用于大规模制备。
Preparation method of single-phase five-component high-entropy perovskite manganese oxide ceramic
一种单相五组元高熵钙钛矿锰氧化物陶瓷的制备方法
MA JI (author) / LI JUNHONG (author) / YANG SHENG'AN (author) / ZHANG TONG (author) / HUANG XIN (author) / CHEN RUI (author)
2023-10-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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