Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of tetragonal phase nano zirconium oxide powder with uniform particle size and stable yttrium
The invention discloses a preparation method of uniform-particle-size yttrium-stabilized tetragonal-phase nano zirconium oxide powder. The preparation method comprises the following steps: step 1, obtaining zirconium salt, yttrium salt and an additive to obtain a mixed solution, wherein the concentration of Zr < 4 + > in the mixed solution is less than or equal to 0.15 mol/L; 2, standing the mixed solution, and then carrying out chemical precipitation reaction on the mixed solution and weak base in a forward or homodromous or reverse dropwise adding manner; step 3, continuously stirring during the dropwise adding of the chemical precipitation reaction, and stopping the dropwise adding operation when the pH value reaches 8-11; step 4, continuously stirring the reaction solution after dropwise adding to obtain a precipitate suspension; and 5, standing and aging the precipitate suspension, cleaning and filtering, drying and grinding the filtered precipitate, and finally calcining to obtain the yttrium-stabilized nano zirconium oxide powder. The yttrium-stabilized nano zirconium oxide powder with uniform granularity and stable crystal phase is successfully obtained through the method, the crystal structure of the yttrium-stabilized nano zirconium oxide powder is a single tetragonal phase, and the process of the method is convenient to operate, suitable for batch production and good in market popularization prospect.
本发明公开了一种粒度均匀钇稳定四方相纳米氧化锆粉体的制备方法，包括：步骤1：取得锆盐、钇盐及添加剂得到混合溶液中Zr4+浓度≤0.15mol/L；步骤2：将所述混合溶液静置后与弱碱采用正向或同向或反向的滴加方式进行化学沉淀反应；步骤3：所述化学沉淀反应滴加中持续搅拌，当pH值达到8～11时，停止滴加操作；步骤4：滴加完成后将反应溶液继续搅拌后得到沉淀物悬浮液；步骤5：将沉淀物悬浮液静置陈化后，进行清洗过滤，对过滤后的沉淀物进行烘干研磨，最后经过煅烧获得钇稳定纳米氧化锆粉体。通过上述方法成功获得了一种粒度均匀、晶相稳定的钇稳定纳米氧化锆粉体，其晶体结构为单一四方相，该方法的工艺便于操作，适合批量生产，有很好的市场推广前景。
Preparation method of tetragonal phase nano zirconium oxide powder with uniform particle size and stable yttrium
The invention discloses a preparation method of uniform-particle-size yttrium-stabilized tetragonal-phase nano zirconium oxide powder. The preparation method comprises the following steps: step 1, obtaining zirconium salt, yttrium salt and an additive to obtain a mixed solution, wherein the concentration of Zr < 4 + > in the mixed solution is less than or equal to 0.15 mol/L; 2, standing the mixed solution, and then carrying out chemical precipitation reaction on the mixed solution and weak base in a forward or homodromous or reverse dropwise adding manner; step 3, continuously stirring during the dropwise adding of the chemical precipitation reaction, and stopping the dropwise adding operation when the pH value reaches 8-11; step 4, continuously stirring the reaction solution after dropwise adding to obtain a precipitate suspension; and 5, standing and aging the precipitate suspension, cleaning and filtering, drying and grinding the filtered precipitate, and finally calcining to obtain the yttrium-stabilized nano zirconium oxide powder. The yttrium-stabilized nano zirconium oxide powder with uniform granularity and stable crystal phase is successfully obtained through the method, the crystal structure of the yttrium-stabilized nano zirconium oxide powder is a single tetragonal phase, and the process of the method is convenient to operate, suitable for batch production and good in market popularization prospect.
本发明公开了一种粒度均匀钇稳定四方相纳米氧化锆粉体的制备方法，包括：步骤1：取得锆盐、钇盐及添加剂得到混合溶液中Zr4+浓度≤0.15mol/L；步骤2：将所述混合溶液静置后与弱碱采用正向或同向或反向的滴加方式进行化学沉淀反应；步骤3：所述化学沉淀反应滴加中持续搅拌，当pH值达到8～11时，停止滴加操作；步骤4：滴加完成后将反应溶液继续搅拌后得到沉淀物悬浮液；步骤5：将沉淀物悬浮液静置陈化后，进行清洗过滤，对过滤后的沉淀物进行烘干研磨，最后经过煅烧获得钇稳定纳米氧化锆粉体。通过上述方法成功获得了一种粒度均匀、晶相稳定的钇稳定纳米氧化锆粉体，其晶体结构为单一四方相，该方法的工艺便于操作，适合批量生产，有很好的市场推广前景。
Preparation method of tetragonal phase nano zirconium oxide powder with uniform particle size and stable yttrium
一种粒度均匀钇稳定四方相纳米氧化锆粉体的制备方法
WANG XIAOYAN (Autor:in) / LIU YUFU (Autor:in) / ZHANG WAN (Autor:in) / XUE JIAN (Autor:in) / YUE XIN (Autor:in) / LYU YANQING (Autor:in) / CUI SHIQIANG (Autor:in) / ZHANG FULIN (Autor:in) / ZHAO HONGJIAN (Autor:in)
29.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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