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Non-equal-ratio rare earth zirconate powder and method for preparing non-equal-ratio rare earth zirconate powder through precursor granulation method
The invention relates to a method for preparing unequal-ratio rare earth zirconate powder by a precursor granulation method. The invention relates to the technical field of thermal barrier coatings. The method comprises the following steps: S1, accurately proportioning according to a molar ratio in a molecular formula, mixing a rare earth source and a zirconium source to prepare a solution A and a solution B, and uniformly mixing the solution A and the solution B; s2, dropwise adding the mixed solution obtained in the step S1 into ammonia water or an ammonium oxalate solution, and continuously stirring to generate a flocculated precipitate; s3, obtaining a precursor by using a ceramic membrane separation technology and a filter pressing method; s4, carrying out size mixing treatment on the precursor obtained in the step S3 through an acidifying agent, and carrying out spray granulation to obtain precursor spherical powder; and S5, calcining the precursor spherical powder obtained in the step S4 at high temperature to obtain the spherical unequal-ratio rare earth zirconate powder. The preparation method disclosed by the invention is more efficient, is suitable for large-scale industrial production, and opens up a new way for preparing the unequal-ratio rare earth zirconate powder.
本发明的一种前驱体造粒法制备非等比稀土锆酸盐粉体的方法。本发明涉及热障涂层技术领域。方法包括以下步骤：S1，按照分子式中的摩尔比精确配料，将稀土源和锆源混合配置成溶液A、B，并将溶液A、B混合均匀；S2，将S1中得到的混合溶液逐滴加入至氨水或草酸铵溶液中，并不断搅拌，生成絮凝沉淀物；S3，利用陶瓷膜分离技术和压滤法，去得到前驱体；S4，将步骤S3得到的前驱体经酸化剂调浆处理，进行喷雾造粒，得到前驱体球形粉末；S5，将S4的前驱体球形粉末在高温下煅烧得到球形非等比稀土锆酸盐粉体。本发明的制备方法更为高效，适用于大规模的工业化生产，为非等比稀土锆酸盐粉体的制备开辟了新的途径。
Non-equal-ratio rare earth zirconate powder and method for preparing non-equal-ratio rare earth zirconate powder through precursor granulation method
The invention relates to a method for preparing unequal-ratio rare earth zirconate powder by a precursor granulation method. The invention relates to the technical field of thermal barrier coatings. The method comprises the following steps: S1, accurately proportioning according to a molar ratio in a molecular formula, mixing a rare earth source and a zirconium source to prepare a solution A and a solution B, and uniformly mixing the solution A and the solution B; s2, dropwise adding the mixed solution obtained in the step S1 into ammonia water or an ammonium oxalate solution, and continuously stirring to generate a flocculated precipitate; s3, obtaining a precursor by using a ceramic membrane separation technology and a filter pressing method; s4, carrying out size mixing treatment on the precursor obtained in the step S3 through an acidifying agent, and carrying out spray granulation to obtain precursor spherical powder; and S5, calcining the precursor spherical powder obtained in the step S4 at high temperature to obtain the spherical unequal-ratio rare earth zirconate powder. The preparation method disclosed by the invention is more efficient, is suitable for large-scale industrial production, and opens up a new way for preparing the unequal-ratio rare earth zirconate powder.
本发明的一种前驱体造粒法制备非等比稀土锆酸盐粉体的方法。本发明涉及热障涂层技术领域。方法包括以下步骤：S1，按照分子式中的摩尔比精确配料，将稀土源和锆源混合配置成溶液A、B，并将溶液A、B混合均匀；S2，将S1中得到的混合溶液逐滴加入至氨水或草酸铵溶液中，并不断搅拌，生成絮凝沉淀物；S3，利用陶瓷膜分离技术和压滤法，去得到前驱体；S4，将步骤S3得到的前驱体经酸化剂调浆处理，进行喷雾造粒，得到前驱体球形粉末；S5，将S4的前驱体球形粉末在高温下煅烧得到球形非等比稀土锆酸盐粉体。本发明的制备方法更为高效，适用于大规模的工业化生产，为非等比稀土锆酸盐粉体的制备开辟了新的途径。
Non-equal-ratio rare earth zirconate powder and method for preparing non-equal-ratio rare earth zirconate powder through precursor granulation method
一种非等比稀土锆酸盐粉体和前驱体造粒法制备其的方法
YANG BO (author) / JIN HONGYUN (author) / HONG JIANHE (author) / LI KAIYUN (author) / ZHANG SHENG (author) / WEI BENBEN (author) / WANG XUAN (author) / YANG JING (author)
2024-08-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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