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Preparation method of pure-phase bismuth ferrite ceramic
The invention belongs to the technical field of functional ceramics, and discloses a preparation method of pure-phase bismuth ferrite ceramics. The preparation method comprises the following steps: dissolving bismuth nitrate pentahydrate, iron nitrate nonahydrate and citric acid in a mixed solvent of absolute methanol and ethylene glycol; then putting the mixed solvent on a constant-temperature magnetic stirrer, heating and stirring to form wet gel, and putting the wet gel into a drying box for drying; and finally, drying, calcining, tabletting and sintering the wet gel. The sol-gel method is adopted, it is guaranteed that all the components are evenly mixed, the temperature interval of pure-phase BiFeO3 ceramic synthesis is defined, the prepared ceramic target material is high in density and free of impurity phase generation, and the method is simple in required equipment and preparation process, low in cost and good in repeatability.
本发明属于功能陶瓷技术领域，公开了一种纯相铁酸铋陶瓷的制备方法。本发明的制备方法包括以下步骤，将五水硝酸铋、九水硝酸铁、柠檬酸溶于无水甲醇和乙二醇的混合溶剂中；然后将混合溶剂放置在恒温磁力搅拌器上，加热搅拌形成湿凝胶，放入干燥箱干燥；最后将湿凝胶烘干、煅烧，压片烧结。本发明采用溶胶凝胶法，保证了各组分均匀混合，明确了纯相BiFeO3陶瓷合成的温度区间，制备出的陶瓷靶材致密度高，无杂相生成，且本法所需设备和制备工艺简单，成本低廉，重复性好。
Preparation method of pure-phase bismuth ferrite ceramic
The invention belongs to the technical field of functional ceramics, and discloses a preparation method of pure-phase bismuth ferrite ceramics. The preparation method comprises the following steps: dissolving bismuth nitrate pentahydrate, iron nitrate nonahydrate and citric acid in a mixed solvent of absolute methanol and ethylene glycol; then putting the mixed solvent on a constant-temperature magnetic stirrer, heating and stirring to form wet gel, and putting the wet gel into a drying box for drying; and finally, drying, calcining, tabletting and sintering the wet gel. The sol-gel method is adopted, it is guaranteed that all the components are evenly mixed, the temperature interval of pure-phase BiFeO3 ceramic synthesis is defined, the prepared ceramic target material is high in density and free of impurity phase generation, and the method is simple in required equipment and preparation process, low in cost and good in repeatability.
本发明属于功能陶瓷技术领域，公开了一种纯相铁酸铋陶瓷的制备方法。本发明的制备方法包括以下步骤，将五水硝酸铋、九水硝酸铁、柠檬酸溶于无水甲醇和乙二醇的混合溶剂中；然后将混合溶剂放置在恒温磁力搅拌器上，加热搅拌形成湿凝胶，放入干燥箱干燥；最后将湿凝胶烘干、煅烧，压片烧结。本发明采用溶胶凝胶法，保证了各组分均匀混合，明确了纯相BiFeO3陶瓷合成的温度区间，制备出的陶瓷靶材致密度高，无杂相生成，且本法所需设备和制备工艺简单，成本低廉，重复性好。
Preparation method of pure-phase bismuth ferrite ceramic
一种纯相铁酸铋陶瓷的制备方法
MA JI (Autor:in) / ZHANG TONG (Autor:in) / ZHAO WENHAI (Autor:in) / YANG SHENG'AN (Autor:in) / ZHANG HUI (Autor:in) / CHEN QINGMING (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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