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Preparation method of aqueous-phase precursor of high-entropy rare earth double-boron carbide nano-powder
The invention discloses a preparation method of a water-phase precursor of high-entropy rare earth double-boron carbide nano-powder. The preparation method comprises the following steps: (1) weighing rare earth salt, a boron source and a carbon source in proportion; (2) adding rare earth salt, a boron source and a carbon source into distilled water, and stirring at room temperature to fully dissolve to obtain a clear solution; (3) fully drying the settled solution, and grinding to obtain precursor powder; (4) performing hydraulic compaction on the precursor powder to obtain a densified green body; and (5) carrying out normal-pressure and high-temperature sintering treatment on the green body in a vacuum or protective atmosphere to obtain the high-entropy rare earth double-boron carbide nano-powder. The high-entropy rare earth double-boron carbide nano powder is prepared by a water-phase precursor method, so that the high-temperature reduction reaction temperature can be effectively reduced, the use of an organic solvent is avoided, and the low-temperature environment-friendly preparation of the nano powder is realized.
本发明公开了一种高熵稀土双硼碳化物纳米粉体的水相前驱体制备方法，包括如下步骤：(1)按比例称取稀土盐、硼源和碳源；(2)将稀土盐、硼源和碳源加入蒸馏水中，在室温下搅拌使其充分溶解得到澄清溶液；(3)将澄清溶液充分干燥后，进行研磨得到前驱体粉末；(4)将前驱体粉末经过液压压实得到致密化的坯体；(5)将坯体在真空或保护气氛下进行常压高温烧结处理，得到高熵稀土双硼碳化物纳米粉体。本发明以水相前驱体法来制备高熵稀土双硼碳化物纳米粉体，可以有效降低高温还原反应温度，避免使用有机溶剂，实现纳米粉体的低温环保制备。
Preparation method of aqueous-phase precursor of high-entropy rare earth double-boron carbide nano-powder
The invention discloses a preparation method of a water-phase precursor of high-entropy rare earth double-boron carbide nano-powder. The preparation method comprises the following steps: (1) weighing rare earth salt, a boron source and a carbon source in proportion; (2) adding rare earth salt, a boron source and a carbon source into distilled water, and stirring at room temperature to fully dissolve to obtain a clear solution; (3) fully drying the settled solution, and grinding to obtain precursor powder; (4) performing hydraulic compaction on the precursor powder to obtain a densified green body; and (5) carrying out normal-pressure and high-temperature sintering treatment on the green body in a vacuum or protective atmosphere to obtain the high-entropy rare earth double-boron carbide nano-powder. The high-entropy rare earth double-boron carbide nano powder is prepared by a water-phase precursor method, so that the high-temperature reduction reaction temperature can be effectively reduced, the use of an organic solvent is avoided, and the low-temperature environment-friendly preparation of the nano powder is realized.
本发明公开了一种高熵稀土双硼碳化物纳米粉体的水相前驱体制备方法，包括如下步骤：(1)按比例称取稀土盐、硼源和碳源；(2)将稀土盐、硼源和碳源加入蒸馏水中，在室温下搅拌使其充分溶解得到澄清溶液；(3)将澄清溶液充分干燥后，进行研磨得到前驱体粉末；(4)将前驱体粉末经过液压压实得到致密化的坯体；(5)将坯体在真空或保护气氛下进行常压高温烧结处理，得到高熵稀土双硼碳化物纳米粉体。本发明以水相前驱体法来制备高熵稀土双硼碳化物纳米粉体，可以有效降低高温还原反应温度，避免使用有机溶剂，实现纳米粉体的低温环保制备。
Preparation method of aqueous-phase precursor of high-entropy rare earth double-boron carbide nano-powder
一种高熵稀土双硼碳化物纳米粉体的水相前驱体制备方法
SUN GUOXUN (author) / SUN XIAONING (author)
2023-03-21
Patent
Electronic Resource
Chinese
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