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Layered high-entropy double-boron carbide ceramic powder and preparation method thereof
The invention relates to the technical field of high-entropy ceramic materials, in particular to layered high-entropy double-boron carbide ceramic powder and a preparation method thereof. The chemical formula of layered high-entropy double-boron carbide in the layered high-entropy double-boron carbide ceramic powder is REB2C2, wherein RE is at least three different elements selected from Y, Ce, Gd, Dy and Er, and the molar ratio of each of the elements is 1. The preparation method comprises the following steps: ball-milling and mixing at least three metal oxides, a boron source and a carbon source, compacting the uniformly mixed powder to obtain a densified green body, sintering the green body at high temperature to obtain a layered high-entropy double-boron carbide block material, and finally, carrying out crushing and grinding to obtain the layered high-entropy double-boron carbide powder. The single-phase high-entropy double-boron carbide ceramic powder with uniform components can be synthesized by taking the metal oxides as raw materials and adopting a carbon/boron thermal reduction method; and the method is simple in preparation process, easy to control the reaction process, free of impurity introduction, low in product preparation cost and suitable for batch production.
本发明涉及高熵陶瓷材料技术领域，具体涉及一种层状高熵双硼碳化物陶瓷粉体及其制备方法，所述层状高熵双硼碳化物陶瓷粉体中层状高熵双硼碳化物的化学式为REB2C2，其中RE为Y，Ce，Gd，Dy，Er中的至少三种不同元素，各元素的摩尔比为1；制备方法为将至少三种金属氧化物、硼源和碳源球磨混合，然后将混合均匀的粉体压实得到致密化的坯体，再将坯体高温烧结得到层状高熵双硼碳化物块体材料，最后经过破碎和研磨制得层状高熵双硼碳化物粉体。以金属氧化物为原料采用碳/硼热还原法可以合成单一相且组分均匀的高熵双硼碳化物陶瓷粉体，该方法制备工艺简单，易于控制反应过程，无杂质引入，产品制备成本低，适合批量生产。
Layered high-entropy double-boron carbide ceramic powder and preparation method thereof
The invention relates to the technical field of high-entropy ceramic materials, in particular to layered high-entropy double-boron carbide ceramic powder and a preparation method thereof. The chemical formula of layered high-entropy double-boron carbide in the layered high-entropy double-boron carbide ceramic powder is REB2C2, wherein RE is at least three different elements selected from Y, Ce, Gd, Dy and Er, and the molar ratio of each of the elements is 1. The preparation method comprises the following steps: ball-milling and mixing at least three metal oxides, a boron source and a carbon source, compacting the uniformly mixed powder to obtain a densified green body, sintering the green body at high temperature to obtain a layered high-entropy double-boron carbide block material, and finally, carrying out crushing and grinding to obtain the layered high-entropy double-boron carbide powder. The single-phase high-entropy double-boron carbide ceramic powder with uniform components can be synthesized by taking the metal oxides as raw materials and adopting a carbon/boron thermal reduction method; and the method is simple in preparation process, easy to control the reaction process, free of impurity introduction, low in product preparation cost and suitable for batch production.
本发明涉及高熵陶瓷材料技术领域，具体涉及一种层状高熵双硼碳化物陶瓷粉体及其制备方法，所述层状高熵双硼碳化物陶瓷粉体中层状高熵双硼碳化物的化学式为REB2C2，其中RE为Y，Ce，Gd，Dy，Er中的至少三种不同元素，各元素的摩尔比为1；制备方法为将至少三种金属氧化物、硼源和碳源球磨混合，然后将混合均匀的粉体压实得到致密化的坯体，再将坯体高温烧结得到层状高熵双硼碳化物块体材料，最后经过破碎和研磨制得层状高熵双硼碳化物粉体。以金属氧化物为原料采用碳/硼热还原法可以合成单一相且组分均匀的高熵双硼碳化物陶瓷粉体，该方法制备工艺简单，易于控制反应过程，无杂质引入，产品制备成本低，适合批量生产。
Layered high-entropy double-boron carbide ceramic powder and preparation method thereof
一种层状高熵双硼碳化物陶瓷粉体及其制备方法
SUN GUOXUN (author) / WANG WEILI (author) / SUN XIAONING (author)
2021-05-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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