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Preparation method of yttria-stabilized zirconia powder
The invention belongs to the technical field of powder preparation, and particularly discloses a preparation method of yttria-stabilized zirconia powder. The preparation method comprises the following steps: covering blocky yttria-stabilized zirconia with composite salt, placing the blocky yttria-stabilized zirconia in a tubular furnace filled with mixed gas, and heating to melt the composite salt into composite molten salt; and then removing the composite molten salt, and performing cleaning and centrifugation to obtain the product. Wherein the composite salt comprises lithium chloride and potassium chloride; the mixed gas comprises water vapor, oxygen and inert gas. According to the preparation method disclosed by the invention, the composite molten salt is used for carrying out low-temperature corrosion permeation on the yttrium oxide-stabilized zirconium oxide grain boundary, and the catalytic promotion effect of water vapor and oxygen is added, so that the corrosion decomposition of blocky yttrium oxide-stabilized zirconium oxide is accelerated, and the yttrium oxide-stabilized zirconium oxide powder is obtained; the powder is composed of single crystal grains, the shape is regular, the particle outline is clear, and defects are few; the average particle size is small, the particle size distribution is uniform, and the powder performance is excellent.
本发明属于粉体制备技术领域，具体公开了一种氧化钇稳定氧化锆粉体的制备方法。该制备方法，包括以下步骤：将复合盐覆盖块状氧化钇稳定氧化锆，置于通有混合气体的管式炉中，进行加热，使复合盐熔融成复合熔盐；然后去除复合熔盐，经清洗、离心，制得；其中：复合盐包括氯化锂和氯化钾；混合气体包括水蒸气、氧气和惰性气体。本发明采用复合熔盐对氧化钇稳定氧化锆晶界进行低温腐蚀渗透，加之水蒸气和氧气的催化促进作用，加速了块状氧化钇稳定氧化锆的腐蚀分解，从而获得了氧化钇稳定氧化锆粉体；该粉体由单个晶粒组成，不仅形状规则，颗粒轮廓清晰，缺陷少；而且平均粒径小，粒径分布均匀，具有优异的粉体性能。
Preparation method of yttria-stabilized zirconia powder
The invention belongs to the technical field of powder preparation, and particularly discloses a preparation method of yttria-stabilized zirconia powder. The preparation method comprises the following steps: covering blocky yttria-stabilized zirconia with composite salt, placing the blocky yttria-stabilized zirconia in a tubular furnace filled with mixed gas, and heating to melt the composite salt into composite molten salt; and then removing the composite molten salt, and performing cleaning and centrifugation to obtain the product. Wherein the composite salt comprises lithium chloride and potassium chloride; the mixed gas comprises water vapor, oxygen and inert gas. According to the preparation method disclosed by the invention, the composite molten salt is used for carrying out low-temperature corrosion permeation on the yttrium oxide-stabilized zirconium oxide grain boundary, and the catalytic promotion effect of water vapor and oxygen is added, so that the corrosion decomposition of blocky yttrium oxide-stabilized zirconium oxide is accelerated, and the yttrium oxide-stabilized zirconium oxide powder is obtained; the powder is composed of single crystal grains, the shape is regular, the particle outline is clear, and defects are few; the average particle size is small, the particle size distribution is uniform, and the powder performance is excellent.
本发明属于粉体制备技术领域，具体公开了一种氧化钇稳定氧化锆粉体的制备方法。该制备方法，包括以下步骤：将复合盐覆盖块状氧化钇稳定氧化锆，置于通有混合气体的管式炉中，进行加热，使复合盐熔融成复合熔盐；然后去除复合熔盐，经清洗、离心，制得；其中：复合盐包括氯化锂和氯化钾；混合气体包括水蒸气、氧气和惰性气体。本发明采用复合熔盐对氧化钇稳定氧化锆晶界进行低温腐蚀渗透，加之水蒸气和氧气的催化促进作用，加速了块状氧化钇稳定氧化锆的腐蚀分解，从而获得了氧化钇稳定氧化锆粉体；该粉体由单个晶粒组成，不仅形状规则，颗粒轮廓清晰，缺陷少；而且平均粒径小，粒径分布均匀，具有优异的粉体性能。
Preparation method of yttria-stabilized zirconia powder
一种氧化钇稳定氧化锆粉体的制备方法
TIAN ZHILIN (author) / ZHENG LIYA (author) / LI BIN (author) / QIU ZIHAO (author)
2024-06-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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