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一种Si掺杂改性MoAlB陶瓷及其制备方法
本发明公开了一种Si掺杂改性MoAlB陶瓷及其制备方法，将高纯MoB粉末、Al粉末、Si粉末按照一定比例、一定顺序混合后进行两次球磨，球磨结束后在管式炉中进行高温保温除杂，保温结束后用高温烧结炉进行真空热压烧结，烧结完成后随炉冷却至室温下即可获得Si掺杂改性MoAlB陶瓷。本发明制得的MoAlB陶瓷具有较小的晶粒，较高的力学性能，如高断裂韧性、高硬度、高抗弯强度等。
The invention discloses Si-doped modified MoAlB ceramic and a preparation method thereof. The preparation method includes the steps that high-purity MoB powder, Al powder and Si powder are mixed according to a certain proportion and a certain sequence and then subjected to ball milling twice; then high-temperature heat preservation and impurity removal are conducted in a tubular furnace after ballmilling is completed, and vacuum hot-pressing sintering is conducted through a high-temperature sintering furnace after heat preservation is completed; and after the sintering is finished, the sintered material is cooled to room temperature along with the furnace to obtain the Si-doped modified MoAlB ceramic. The MoAlB ceramic prepared by the invention has smaller crystal grains and higher mechanical properties, such as high fracture toughness, high hardness, high bending strength and the like.
一种Si掺杂改性MoAlB陶瓷及其制备方法
本发明公开了一种Si掺杂改性MoAlB陶瓷及其制备方法，将高纯MoB粉末、Al粉末、Si粉末按照一定比例、一定顺序混合后进行两次球磨，球磨结束后在管式炉中进行高温保温除杂，保温结束后用高温烧结炉进行真空热压烧结，烧结完成后随炉冷却至室温下即可获得Si掺杂改性MoAlB陶瓷。本发明制得的MoAlB陶瓷具有较小的晶粒，较高的力学性能，如高断裂韧性、高硬度、高抗弯强度等。
The invention discloses Si-doped modified MoAlB ceramic and a preparation method thereof. The preparation method includes the steps that high-purity MoB powder, Al powder and Si powder are mixed according to a certain proportion and a certain sequence and then subjected to ball milling twice; then high-temperature heat preservation and impurity removal are conducted in a tubular furnace after ballmilling is completed, and vacuum hot-pressing sintering is conducted through a high-temperature sintering furnace after heat preservation is completed; and after the sintering is finished, the sintered material is cooled to room temperature along with the furnace to obtain the Si-doped modified MoAlB ceramic. The MoAlB ceramic prepared by the invention has smaller crystal grains and higher mechanical properties, such as high fracture toughness, high hardness, high bending strength and the like.
一种Si掺杂改性MoAlB陶瓷及其制备方法
22.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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