Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-purity rod-like hafnium boride powder and preparation method thereof
The invention belongs to the field of preparation of hafnium boride powder, and particularly discloses high-purity rod-like hafnium boride powder and a double-precursor-assisted mechanical synthesis preparation method of the high-purity rod-like hafnium boride powder. The preparation method comprises the following steps: mixing and stirring sodium tetraborate, sorbitol and deionized water to obtain a mixed solution; carrying out solvent heat treatment for 24-48 hours at 60-80 DEG C, so as to obtain gel; drying and crushing the gel to obtain boron-carbon precursor powder; the preparation method comprises the following steps: mixing acetylacetone, hafnium chloride and absolute ethyl alcohol under a water bath condition, and uniformly stirring to obtain a mixed solution; drying and crushing the solution to obtain hafnium precursor powder; fully grinding and uniformly mixing the two kinds of precursor powder; the obtained mixed powder is placed in a tubular furnace, shielding gas is introduced into the tubular furnace, calcination is conducted for 120 min to 180 min at the temperature of 1500 DEG C to 1700 DEG C, and the high-purity rod-shaped hafnium boride powder is prepared. The preparation process is simple, high in production efficiency, low in energy consumption and suitable for industrial production.
本发明属于硼化铪粉体制备领域，具体公开了一种高纯棒状硼化铪粉体及其双前驱体辅助机械合成法制备方法。制备方法包括：将四硼酸钠、山梨醇与去离子水混合搅拌，从而得到混合液；在60‑80℃进行24‑48h溶剂热处理，从而得到凝胶；将所述凝胶烘干、破碎，从而得到硼‑碳前驱体粉；在水浴条件下，将乙酰丙酮、氯化铪与无水乙醇混合，搅拌均匀，得到混合液；将所述溶液烘干、破碎，从而得到铪前驱体粉；将两种前驱体粉末充分研磨混合均匀；将得到的混合粉末置于管式炉内，并向管式炉内通入保护气，在1500‑1700℃下煅烧120‑180min，制得高纯、棒状的硼化铪粉。本发明的制备工艺简单、生产效率高、能耗低，适合工业化生产。
High-purity rod-like hafnium boride powder and preparation method thereof
The invention belongs to the field of preparation of hafnium boride powder, and particularly discloses high-purity rod-like hafnium boride powder and a double-precursor-assisted mechanical synthesis preparation method of the high-purity rod-like hafnium boride powder. The preparation method comprises the following steps: mixing and stirring sodium tetraborate, sorbitol and deionized water to obtain a mixed solution; carrying out solvent heat treatment for 24-48 hours at 60-80 DEG C, so as to obtain gel; drying and crushing the gel to obtain boron-carbon precursor powder; the preparation method comprises the following steps: mixing acetylacetone, hafnium chloride and absolute ethyl alcohol under a water bath condition, and uniformly stirring to obtain a mixed solution; drying and crushing the solution to obtain hafnium precursor powder; fully grinding and uniformly mixing the two kinds of precursor powder; the obtained mixed powder is placed in a tubular furnace, shielding gas is introduced into the tubular furnace, calcination is conducted for 120 min to 180 min at the temperature of 1500 DEG C to 1700 DEG C, and the high-purity rod-shaped hafnium boride powder is prepared. The preparation process is simple, high in production efficiency, low in energy consumption and suitable for industrial production.
本发明属于硼化铪粉体制备领域，具体公开了一种高纯棒状硼化铪粉体及其双前驱体辅助机械合成法制备方法。制备方法包括：将四硼酸钠、山梨醇与去离子水混合搅拌，从而得到混合液；在60‑80℃进行24‑48h溶剂热处理，从而得到凝胶；将所述凝胶烘干、破碎，从而得到硼‑碳前驱体粉；在水浴条件下，将乙酰丙酮、氯化铪与无水乙醇混合，搅拌均匀，得到混合液；将所述溶液烘干、破碎，从而得到铪前驱体粉；将两种前驱体粉末充分研磨混合均匀；将得到的混合粉末置于管式炉内，并向管式炉内通入保护气，在1500‑1700℃下煅烧120‑180min，制得高纯、棒状的硼化铪粉。本发明的制备工艺简单、生产效率高、能耗低，适合工业化生产。
High-purity rod-like hafnium boride powder and preparation method thereof
一种高纯棒状硼化铪粉体及其制备方法
HU XIAOYE (Autor:in) / ZHANG HANWEN (Autor:in) / HUANG ZHULIN (Autor:in) / LI MING (Autor:in) / LI XINYANG (Autor:in) / WANG ZHEN (Autor:in) / LI KEWEI (Autor:in)
30.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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