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Single-phase high-entropy carbide ceramic powder as well as preparation method and application thereof
The invention discloses single-phase high-entropy carbide ceramic powder as well as a preparation method and application thereof, and belongs to the technical field of high-entropy ceramic powder materials. The preparation method comprises the following steps: mixing and ball-milling metal oxide powder and carbon powder in an alcohol medium in an air environment to obtain mixed powder slurry; drying the mixed powder slurry, adding a PVA (Polyvinyl Alcohol) binder, and pressing into a green body; when the environment is a vacuum environment, the green body is placed in a graphite felt heating element in a vacuum cavity, direct current is loaded to the two ends of the graphite felt heating element through a vacuum electrode, Joule heat is excited under the vacuum condition for Joule heating, and single-phase high-entropy carbide ceramic powder is obtained; or when the environment is an argon environment, the green body is placed between two graphite felt heating elements which are arranged up and down, direct current is applied from top to bottom, a power supply is turned on, argon is excited to form plasma to generate a heating temperature, and the single-phase high-entropy carbide ceramic powder is obtained.
本发明公开了一种单相高熵碳化物陶瓷粉体及其制备方法和应用，属于高熵陶瓷粉体材料技术领域。上述制备方法包括：将金属氧化物粉体和碳粉在酒精介质于空气环境中混合球磨，得到混合粉体浆料；将混合粉体浆料干燥后加入PVA粘结剂，压制为坯体；当环境为真空环境时，将坯体置于真空腔体内部的石墨毡加热元件中，直流电通过真空电极加载于石墨毡加热元件两端，真空条件下激发焦耳热进行焦耳加热，获得单相高熵碳化物陶瓷粉体；或当环境为氩气环境中时，将坯体置于上下设置的两片石墨毡加热元件的中间，从上至下施加直流电，打开电源，氩气被激发形成等离子体产生加热温度，获得单相高熵碳化物陶瓷粉体。
Single-phase high-entropy carbide ceramic powder as well as preparation method and application thereof
The invention discloses single-phase high-entropy carbide ceramic powder as well as a preparation method and application thereof, and belongs to the technical field of high-entropy ceramic powder materials. The preparation method comprises the following steps: mixing and ball-milling metal oxide powder and carbon powder in an alcohol medium in an air environment to obtain mixed powder slurry; drying the mixed powder slurry, adding a PVA (Polyvinyl Alcohol) binder, and pressing into a green body; when the environment is a vacuum environment, the green body is placed in a graphite felt heating element in a vacuum cavity, direct current is loaded to the two ends of the graphite felt heating element through a vacuum electrode, Joule heat is excited under the vacuum condition for Joule heating, and single-phase high-entropy carbide ceramic powder is obtained; or when the environment is an argon environment, the green body is placed between two graphite felt heating elements which are arranged up and down, direct current is applied from top to bottom, a power supply is turned on, argon is excited to form plasma to generate a heating temperature, and the single-phase high-entropy carbide ceramic powder is obtained.
本发明公开了一种单相高熵碳化物陶瓷粉体及其制备方法和应用，属于高熵陶瓷粉体材料技术领域。上述制备方法包括：将金属氧化物粉体和碳粉在酒精介质于空气环境中混合球磨，得到混合粉体浆料；将混合粉体浆料干燥后加入PVA粘结剂，压制为坯体；当环境为真空环境时，将坯体置于真空腔体内部的石墨毡加热元件中，直流电通过真空电极加载于石墨毡加热元件两端，真空条件下激发焦耳热进行焦耳加热，获得单相高熵碳化物陶瓷粉体；或当环境为氩气环境中时，将坯体置于上下设置的两片石墨毡加热元件的中间，从上至下施加直流电，打开电源，氩气被激发形成等离子体产生加热温度，获得单相高熵碳化物陶瓷粉体。
Single-phase high-entropy carbide ceramic powder as well as preparation method and application thereof
一种单相高熵碳化物陶瓷粉体及其制备方法和应用
ZHAO XING (author) / BAI YUHANG (author) / WU YUHAO (author) / LIU JIA (author) / ZHAO YINGYING (author) / LUO HUAN (author) / DU HUILING (author) / SONG YAN (author)
2024-03-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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