Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
B4C-coated Mg2B2O5 core-shell structure ceramic powder and preparation method thereof
The invention discloses B4C-coated Mg2B2O5 core-shell structure ceramic powder and a preparation method thereof.The preparation method comprises the following steps that 1, boron carbide powder, magnesium oxide powder and an organic solvent are mixed and subjected to ultrasonic dispersion for 1-2 h, and a mixed material is obtained; (2) flatly paving the mixed material, drying at high temperature, and grinding for 0.5-2 hours to obtain precursor powder; (3) putting the precursor powder into an alumina crucible, putting the alumina crucible into a tubular furnace, and calcining for 0.5-1.5 hours in an air atmosphere; and (4) switching to a nitrogen atmosphere, continuously heating and calcining for 0.5-1 hour, and carrying out high-temperature annealing to obtain the B4C-coated Mg2B2O5 ceramic powder. The prepared ceramic powder can be sintered and molded at a low temperature and has high mechanical properties, the sintering cost of the boron carbide composite material is reduced, and the toughness of the boron carbide composite material is improved. Meanwhile, the boron carbide material can be applied to industrial scenes such as polishing and grinding, the application range of the boron carbide material is widened, and the boron carbide material has certain grinding application value in the field of grinding.
本发明公开了一种B4C@Mg2B2O5核壳结构陶瓷粉体及其制备方法，包括如下步骤：(1)将碳化硼粉末、氧化镁粉末和有机溶剂混合，超声分散1‑2h，得到混合物料；(2)将所述混合物料平铺后高温烘干并研磨0.5‑2h，得到前驱体粉末；(3)将所述前驱体粉末置于氧化铝坩埚内，将氧化铝坩埚置于管式炉中，于空气气氛下煅烧0.5‑1.5h；(4)切换为氮气气氛，继续升温煅烧0.5‑1h，再经高温退火即得B4C@Mg2B2O5陶瓷粉体。本发明制备的陶瓷粉体可在较低温度下烧结成型，具有较高的力学性能，降低了碳化硼复合材料的烧结成本，提高了其韧性。同时，本发明可应用于抛光磨削等工业场景，拓宽了碳化硼材料的应用范围，在磨削加工领域，具有一定的磨削加工应用价值。
B4C-coated Mg2B2O5 core-shell structure ceramic powder and preparation method thereof
The invention discloses B4C-coated Mg2B2O5 core-shell structure ceramic powder and a preparation method thereof.The preparation method comprises the following steps that 1, boron carbide powder, magnesium oxide powder and an organic solvent are mixed and subjected to ultrasonic dispersion for 1-2 h, and a mixed material is obtained; (2) flatly paving the mixed material, drying at high temperature, and grinding for 0.5-2 hours to obtain precursor powder; (3) putting the precursor powder into an alumina crucible, putting the alumina crucible into a tubular furnace, and calcining for 0.5-1.5 hours in an air atmosphere; and (4) switching to a nitrogen atmosphere, continuously heating and calcining for 0.5-1 hour, and carrying out high-temperature annealing to obtain the B4C-coated Mg2B2O5 ceramic powder. The prepared ceramic powder can be sintered and molded at a low temperature and has high mechanical properties, the sintering cost of the boron carbide composite material is reduced, and the toughness of the boron carbide composite material is improved. Meanwhile, the boron carbide material can be applied to industrial scenes such as polishing and grinding, the application range of the boron carbide material is widened, and the boron carbide material has certain grinding application value in the field of grinding.
本发明公开了一种B4C@Mg2B2O5核壳结构陶瓷粉体及其制备方法，包括如下步骤：(1)将碳化硼粉末、氧化镁粉末和有机溶剂混合，超声分散1‑2h，得到混合物料；(2)将所述混合物料平铺后高温烘干并研磨0.5‑2h，得到前驱体粉末；(3)将所述前驱体粉末置于氧化铝坩埚内，将氧化铝坩埚置于管式炉中，于空气气氛下煅烧0.5‑1.5h；(4)切换为氮气气氛，继续升温煅烧0.5‑1h，再经高温退火即得B4C@Mg2B2O5陶瓷粉体。本发明制备的陶瓷粉体可在较低温度下烧结成型，具有较高的力学性能，降低了碳化硼复合材料的烧结成本，提高了其韧性。同时，本发明可应用于抛光磨削等工业场景，拓宽了碳化硼材料的应用范围，在磨削加工领域，具有一定的磨削加工应用价值。
B4C-coated Mg2B2O5 core-shell structure ceramic powder and preparation method thereof
B4C@Mg2B2O5核壳结构陶瓷粉体及其制备方法
LI DONGXU (Autor:in) / HU NINGFEI (Autor:in) / LU JING (Autor:in)
14.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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