Method for producing plate-shaped alumina particles

• Main Authors: SANO YOSHIYUKI, TAKADA SHINGO, KOIKE RYU, YUAN JIANJUN
• Format: Patent
• Language: Chinese; English
• Published: 26.12.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to a method for producing plate-shaped alumina particles. This method for producing plate-shaped alumina particles comprises: a step for mixing an aluminum compound containing elemental aluminum, a molybdenum compound containing elemental molybdenum, and a shape control agent to form a mixture; and a step for firing the mixture at 1200-1400 DEG C. The shape control agent is at least one selected from the group consisting of silicon, silicon compounds, and germanium compounds, and when the total amount of the raw materials in terms of oxides is 100 mass%, the amount of the shape control agent is less than or equal to 100 mass%. 0.8-4 mass% or less of silicon, a silicon compound, or a germanium compound is mixed in terms of SiO2 or GeO2. 本发明涉及板状氧化铝粒子的制造方法。该板状氧化铝粒子的制造方法包含：将含有铝元素的铝化合物、含有钼元素的钼化合物以及形状控制剂混合而形成混合物的工序；对所述混合物在1200℃以上且1400℃以下进行烧成的工序，所述形状控制剂为选自由硅、硅化合物和锗化合物组成的组中的至少一种，在将进行了氧化物换算的原料总量设为100质量％时，将以SiO2换算或GeO2换算计为0.8～4质量％以下的硅、硅化合物或锗化合物混合。