Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-purity superfine hafnium boride powder and hafnium boride powder
The invention provides a preparation method of high-purity superfine hafnium boride powder and the hafnium boride powder, and relates to the technical field of hafnium boride preparation. The preparation method comprises the following steps: mixing, drying and pressing hafnium oxide, a boron source and a carbon source into blocks, wherein the boron source comprises boric anhydride and/or boric acid; and sequentially carrying out primary heat treatment, hot water treatment and secondary heat treatment on the block to obtain the high-purity superfine hafnium boride powder. The temperature of the primary heat treatment is 1150-1500 DEG C, and the temperature of the secondary heat treatment is 1400-1900 DEG C. According to the method, abnormal growth of crystal grains can be avoided, the hafnium boride powder with high purity and ultrafine granularity is obtained, and the method is easy to operate and suitable for large-scale production.
本发明提供了一种高纯超细硼化铪粉体的制备方法、硼化铪粉体，涉及硼化铪制备技术领域，包括以下步骤：将原料氧化铪、硼源和碳源混合、干燥并压制成块体；硼源包括硼酐和/或硼酸；将块体依次进行一次热处理、热水处理、二次热处理，得到高纯超细硼化铪粉体；一次热处理温度为1150～1500℃，二次热处理温度为1400～1900℃。本发明能够避免晶粒异常长大，获得高纯净度、超细粒度的硼化铪粉体，操作简单，适合规模化生产。
Preparation method of high-purity superfine hafnium boride powder and hafnium boride powder
The invention provides a preparation method of high-purity superfine hafnium boride powder and the hafnium boride powder, and relates to the technical field of hafnium boride preparation. The preparation method comprises the following steps: mixing, drying and pressing hafnium oxide, a boron source and a carbon source into blocks, wherein the boron source comprises boric anhydride and/or boric acid; and sequentially carrying out primary heat treatment, hot water treatment and secondary heat treatment on the block to obtain the high-purity superfine hafnium boride powder. The temperature of the primary heat treatment is 1150-1500 DEG C, and the temperature of the secondary heat treatment is 1400-1900 DEG C. According to the method, abnormal growth of crystal grains can be avoided, the hafnium boride powder with high purity and ultrafine granularity is obtained, and the method is easy to operate and suitable for large-scale production.
本发明提供了一种高纯超细硼化铪粉体的制备方法、硼化铪粉体，涉及硼化铪制备技术领域，包括以下步骤：将原料氧化铪、硼源和碳源混合、干燥并压制成块体；硼源包括硼酐和/或硼酸；将块体依次进行一次热处理、热水处理、二次热处理，得到高纯超细硼化铪粉体；一次热处理温度为1150～1500℃，二次热处理温度为1400～1900℃。本发明能够避免晶粒异常长大，获得高纯净度、超细粒度的硼化铪粉体，操作简单，适合规模化生产。
Preparation method of high-purity superfine hafnium boride powder and hafnium boride powder
高纯超细硼化铪粉体的制备方法、硼化铪粉体
ZHANG XIN (Autor:in) / JIA KUNLE (Autor:in) / WANG YANJUN (Autor:in) / ZHANG SIYUAN (Autor:in) / ZHANG DEMING (Autor:in) / HU XIAOLEI (Autor:in) / MENG LING (Autor:in)
08.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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