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Alumina powder and preparation method thereof
The invention discloses aluminum oxide powder. The aluminum oxide powder is of a flower-shaped structure composed of self-assembled aluminum oxide sheets. The average particle size of the aluminum oxide powder is 4.15-4.72 microns, and the thickness of a single aluminum oxide sheet is 20-100 nm. The preparation method comprises the following steps: S1, dissolving aluminum nitrate, potassium fluoride, sodium fluoride and sodium phosphate in water to obtain a solution A; s2, adding a sodium carbonate solution into the solution A until the pH value of the mixed solution is 5-7; and S3, drying and sintering the mixed solution, in S1, the molar ratio of aluminum nitrate to potassium fluoride to sodium fluoride to sodium phosphate is 10: 1: 1: 0.1. The alumina ceramic prepared from the alumina powder has significantly improved thermal shock resistance, high strength and high toughness, and provides a material basis for high-temperature application of alumina ceramic.
本发明公开了一种氧化铝粉体，所述氧化铝粉体由自组装的氧化铝片组成的花状结构；氧化铝粉体平均粒径为4.15‑4.72μm，单片氧化铝片厚度为20‑100nm。其制备方法，包括：S1、将硝酸铝、氟化钾、氟化钠、磷酸钠溶于水中得到溶液A；S2、将碳酸钠溶液加入溶液A中至混合液pH为5‑7；S3、对混合液进行烘干，烧结得到；S1中，硝酸铝、氟化钾、氟化钠、磷酸钠的摩尔比为10:1:1:0.1。采用所述氧化铝粉体制备的氧化铝陶瓷的抗热冲击性能显著提高，同时还兼具高强度、高韧性，为氧化铝陶瓷高温应用提供了物质基础。
Alumina powder and preparation method thereof
The invention discloses aluminum oxide powder. The aluminum oxide powder is of a flower-shaped structure composed of self-assembled aluminum oxide sheets. The average particle size of the aluminum oxide powder is 4.15-4.72 microns, and the thickness of a single aluminum oxide sheet is 20-100 nm. The preparation method comprises the following steps: S1, dissolving aluminum nitrate, potassium fluoride, sodium fluoride and sodium phosphate in water to obtain a solution A; s2, adding a sodium carbonate solution into the solution A until the pH value of the mixed solution is 5-7; and S3, drying and sintering the mixed solution, in S1, the molar ratio of aluminum nitrate to potassium fluoride to sodium fluoride to sodium phosphate is 10: 1: 1: 0.1. The alumina ceramic prepared from the alumina powder has significantly improved thermal shock resistance, high strength and high toughness, and provides a material basis for high-temperature application of alumina ceramic.
本发明公开了一种氧化铝粉体，所述氧化铝粉体由自组装的氧化铝片组成的花状结构；氧化铝粉体平均粒径为4.15‑4.72μm，单片氧化铝片厚度为20‑100nm。其制备方法，包括：S1、将硝酸铝、氟化钾、氟化钠、磷酸钠溶于水中得到溶液A；S2、将碳酸钠溶液加入溶液A中至混合液pH为5‑7；S3、对混合液进行烘干，烧结得到；S1中，硝酸铝、氟化钾、氟化钠、磷酸钠的摩尔比为10:1:1:0.1。采用所述氧化铝粉体制备的氧化铝陶瓷的抗热冲击性能显著提高，同时还兼具高强度、高韧性，为氧化铝陶瓷高温应用提供了物质基础。
Alumina powder and preparation method thereof
一种氧化铝粉体及其制备方法
LIU DAZHAO (author) / GUI KAIXUAN (author) / WANG MIAO (author) / HU JUNFENG (author) / ZHANG GUANGYUAN (author)
2023-12-26
Patent
Electronic Resource
Chinese
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
C04B
Kalk
,
LIME
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