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Submicron original crystal size high-purity aluminum oxide as well as preparation method and application thereof
The invention relates to submicron primary crystal size high-purity aluminum oxide and a preparation method and application thereof, and belongs to the technical field of inorganic non-metallic materials, and the preparation method comprises the following steps: obtaining a sodium aluminate solution; aluminum hydroxide seed crystals are obtained; adding the aluminum hydroxide seed crystal into the sodium aluminate solution for seed crystal decomposition to obtain aluminum hydroxide; carrying out first calcination on the aluminum hydroxide, and then carrying out first washing to obtain gamma-Al2O3; and carrying out secondary calcination on the gamma-Al2O3, and then carrying out secondary washing, so as to obtain the submicron original crystal size high-purity aluminum oxide, the final product alpha-Al2O3 obtained through the method is good in sphericity degree, particles are easy to disperse, the original crystal size is uniform, accurate regulation and control of the original crystal size can be achieved through regulation and control of temperature and time, serialization of the original crystal size is achieved, the excellent performance of high-end ceramics such as a tape casting method ceramic substrate and a dry pressing method ceramic product can be met, and the method is suitable for industrial production. The invention also relates to application in new energy batteries.
本申请涉及一种亚微米级原晶尺寸高纯氧化铝及其制备方法和应用，属于无机非金属材料技术领域，所述制备方法包括：得到铝酸钠溶液；得到氢氧化铝晶种；将所述氢氧化铝晶种加入所述铝酸钠溶液中进行晶种分解，得到氢氧化铝；将所述氢氧化铝进行第一煅烧，后第一洗涤，得到γ‑Al2O3；将所述γ‑Al2O3进行第二煅烧，后第二洗涤，得到所述亚微米级原晶尺寸高纯氧化铝；通过上述方法得到最终产品α‑Al2O3球形度好，颗粒易分散且原晶尺寸均一，而且能够通过温度和时间的调控实现原晶粒度尺寸的精准调控，实现原晶大小的系列化，可满足高端陶瓷，如流延法陶瓷基板和干压法陶瓷制品的优异性能，以及在新能源电池中的应用。
Submicron original crystal size high-purity aluminum oxide as well as preparation method and application thereof
The invention relates to submicron primary crystal size high-purity aluminum oxide and a preparation method and application thereof, and belongs to the technical field of inorganic non-metallic materials, and the preparation method comprises the following steps: obtaining a sodium aluminate solution; aluminum hydroxide seed crystals are obtained; adding the aluminum hydroxide seed crystal into the sodium aluminate solution for seed crystal decomposition to obtain aluminum hydroxide; carrying out first calcination on the aluminum hydroxide, and then carrying out first washing to obtain gamma-Al2O3; and carrying out secondary calcination on the gamma-Al2O3, and then carrying out secondary washing, so as to obtain the submicron original crystal size high-purity aluminum oxide, the final product alpha-Al2O3 obtained through the method is good in sphericity degree, particles are easy to disperse, the original crystal size is uniform, accurate regulation and control of the original crystal size can be achieved through regulation and control of temperature and time, serialization of the original crystal size is achieved, the excellent performance of high-end ceramics such as a tape casting method ceramic substrate and a dry pressing method ceramic product can be met, and the method is suitable for industrial production. The invention also relates to application in new energy batteries.
本申请涉及一种亚微米级原晶尺寸高纯氧化铝及其制备方法和应用，属于无机非金属材料技术领域，所述制备方法包括：得到铝酸钠溶液；得到氢氧化铝晶种；将所述氢氧化铝晶种加入所述铝酸钠溶液中进行晶种分解，得到氢氧化铝；将所述氢氧化铝进行第一煅烧，后第一洗涤，得到γ‑Al2O3；将所述γ‑Al2O3进行第二煅烧，后第二洗涤，得到所述亚微米级原晶尺寸高纯氧化铝；通过上述方法得到最终产品α‑Al2O3球形度好，颗粒易分散且原晶尺寸均一，而且能够通过温度和时间的调控实现原晶粒度尺寸的精准调控，实现原晶大小的系列化，可满足高端陶瓷，如流延法陶瓷基板和干压法陶瓷制品的优异性能，以及在新能源电池中的应用。
Submicron original crystal size high-purity aluminum oxide as well as preparation method and application thereof
一种亚微米级原晶尺寸高纯氧化铝及其制备方法和应用
LI GUANGZHAN (author) / WANG KE (author) / YANG CONGLIN (author) / NING YIBO (author) / YUE WEI (author)
2023-06-23
Patent
Electronic Resource
Chinese
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