Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of in-situ growth mullite whisker reinforced silicon carbide ceramic-based composite material
The invention provides a preparation method of an in-situ growth mullite whisker reinforced silicon carbide ceramic-based composite material, wherein the method comprises the steps: step 1, adding a matrix raw material into a ball milling tank, adding a dispersant aqueous solution and a ball milling medium, carrying out primary ball milling, adding a binder solution, and continuing secondary ball milling to obtain a slurry, wherein the matrix raw materials comprise silicon carbide powder, aluminum hydroxide powder, metal oxide powder and fluoride powder; step 2, drying and dehydrating the slurry obtained in the step 1 to obtain a solid; step 3, granulating the solid obtained in the step 2, and then sieving; step 4, carrying out dry pressing molding on the screen underflow obtained in the step 3 by using a mold to obtain a green body; step 5, carrying out vacuum drying on the green body obtained in the step 4; and step 6, sintering the green body subjected to vacuum drying in the step 5 at the temperature of 1500-1550 DEG C, and preserving heat for 2-4 hours to obtain the in-situ growth mullite whisker reinforced silicon carbide ceramic-based composite material.
本公开提供了一种原位生长莫来石晶须增强碳化硅陶瓷基复合材料的制备方法，包括步骤：步骤一，将基体原料加入球磨罐中，再加入分散剂水溶液、球磨介质，进行一次磨球，再加入粘结剂溶液，继续二次球磨，得到浆料，其中，所述基体原料为碳化硅粉体、氢氧化铝粉体、金属氧化物粉体和氟化物粉体；步骤二，将步骤一得到的浆料干燥脱水，得到固体物；步骤三，将步骤二得到的固体物造粒，然后过筛；步骤四，将步骤三得到的筛下物利用模具干压成型，得到生坯；步骤五，将步骤四得到的生坯真空干燥；步骤六，将步骤五真空干燥后的生坯在1500℃‑1550℃下进行烧结，保温2h‑4h，其能得到具有原位生长莫来石晶须增强的碳化硅陶瓷基复合材料。
Preparation method of in-situ growth mullite whisker reinforced silicon carbide ceramic-based composite material
The invention provides a preparation method of an in-situ growth mullite whisker reinforced silicon carbide ceramic-based composite material, wherein the method comprises the steps: step 1, adding a matrix raw material into a ball milling tank, adding a dispersant aqueous solution and a ball milling medium, carrying out primary ball milling, adding a binder solution, and continuing secondary ball milling to obtain a slurry, wherein the matrix raw materials comprise silicon carbide powder, aluminum hydroxide powder, metal oxide powder and fluoride powder; step 2, drying and dehydrating the slurry obtained in the step 1 to obtain a solid; step 3, granulating the solid obtained in the step 2, and then sieving; step 4, carrying out dry pressing molding on the screen underflow obtained in the step 3 by using a mold to obtain a green body; step 5, carrying out vacuum drying on the green body obtained in the step 4; and step 6, sintering the green body subjected to vacuum drying in the step 5 at the temperature of 1500-1550 DEG C, and preserving heat for 2-4 hours to obtain the in-situ growth mullite whisker reinforced silicon carbide ceramic-based composite material.
本公开提供了一种原位生长莫来石晶须增强碳化硅陶瓷基复合材料的制备方法，包括步骤：步骤一，将基体原料加入球磨罐中，再加入分散剂水溶液、球磨介质，进行一次磨球，再加入粘结剂溶液，继续二次球磨，得到浆料，其中，所述基体原料为碳化硅粉体、氢氧化铝粉体、金属氧化物粉体和氟化物粉体；步骤二，将步骤一得到的浆料干燥脱水，得到固体物；步骤三，将步骤二得到的固体物造粒，然后过筛；步骤四，将步骤三得到的筛下物利用模具干压成型，得到生坯；步骤五，将步骤四得到的生坯真空干燥；步骤六，将步骤五真空干燥后的生坯在1500℃‑1550℃下进行烧结，保温2h‑4h，其能得到具有原位生长莫来石晶须增强的碳化硅陶瓷基复合材料。
Preparation method of in-situ growth mullite whisker reinforced silicon carbide ceramic-based composite material
原位生长莫来石晶须增强碳化硅陶瓷基复合材料的制备方法
ZHANG JINGDE (Autor:in) / LI ZIHE (Autor:in) / CHANG ZIXUAN (Autor:in) / HAN GUIFANG (Autor:in)
24.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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