Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of boron carbide micro-nano mixed powder for hot pressed sintering
The invention relates to a preparation method of boron carbide micro-nano mixed powder for hot pressed sintering, in particular to a preparation method of boron carbide micro-nano mixed powder for hot pressed sintering, and aims to solve the problem that the high densification degree and the fine grain size of the existing hot-pressed sintered boron carbide are difficult to obtain at the same time. The preparation method comprises the following steps: proportioning nano boron carbide and micron boron carbide according to a certain ratio, mixing, granulating and drying to obtain the boron carbide micro-nano mixed powder which can be directly used for hot-pressed sintering. Compared with traditional direct ball-milling mixing, the method has the advantages that nano boron carbide and micron boron carbide are respectively dispersed into slurry and then mixed, so that the mixing uniformity is greatly enhanced, and sintering is facilitated to obtain a uniform ceramic material. By means of granulation, the powder forms a ball shape, the arch bridge effect of the powder is greatly reduced, the flowability and apparent density of the powder are improved, and hot pressing sintering densification is facilitated. The method is applied to the field of boron carbide ceramic preparation.
一种热压烧结用碳化硼微纳混合粉料的制备方法，本发明涉及一种热压烧结用碳化硼微纳混合粉料的制备方法。本发明的目的是要解决现有热压烧结碳化硼存在的高致密化程度和细晶粒尺寸难以兼得的问题，本发明将纳米碳化硼和微米碳化硼按照一定比例配比、混合、造粒、干燥获得可直接用于热压烧结的碳化硼微纳混合粉料。本发明通过将纳米碳化硼和微米碳化硼分别分散成浆料再混合的方式，相比于传统的直接球磨混合，大大加强了混合的均匀程度，有利于烧结获得均匀的陶瓷材料。通过造粒的手段，使粉料形成球状，大大降低了粉体存在的拱桥效应，提高了粉体流动性和松装密度，利于热压烧结致密化。本发明应用于碳化硼陶瓷制备领域。
Preparation method of boron carbide micro-nano mixed powder for hot pressed sintering
The invention relates to a preparation method of boron carbide micro-nano mixed powder for hot pressed sintering, in particular to a preparation method of boron carbide micro-nano mixed powder for hot pressed sintering, and aims to solve the problem that the high densification degree and the fine grain size of the existing hot-pressed sintered boron carbide are difficult to obtain at the same time. The preparation method comprises the following steps: proportioning nano boron carbide and micron boron carbide according to a certain ratio, mixing, granulating and drying to obtain the boron carbide micro-nano mixed powder which can be directly used for hot-pressed sintering. Compared with traditional direct ball-milling mixing, the method has the advantages that nano boron carbide and micron boron carbide are respectively dispersed into slurry and then mixed, so that the mixing uniformity is greatly enhanced, and sintering is facilitated to obtain a uniform ceramic material. By means of granulation, the powder forms a ball shape, the arch bridge effect of the powder is greatly reduced, the flowability and apparent density of the powder are improved, and hot pressing sintering densification is facilitated. The method is applied to the field of boron carbide ceramic preparation.
一种热压烧结用碳化硼微纳混合粉料的制备方法，本发明涉及一种热压烧结用碳化硼微纳混合粉料的制备方法。本发明的目的是要解决现有热压烧结碳化硼存在的高致密化程度和细晶粒尺寸难以兼得的问题，本发明将纳米碳化硼和微米碳化硼按照一定比例配比、混合、造粒、干燥获得可直接用于热压烧结的碳化硼微纳混合粉料。本发明通过将纳米碳化硼和微米碳化硼分别分散成浆料再混合的方式，相比于传统的直接球磨混合，大大加强了混合的均匀程度，有利于烧结获得均匀的陶瓷材料。通过造粒的手段，使粉料形成球状，大大降低了粉体存在的拱桥效应，提高了粉体流动性和松装密度，利于热压烧结致密化。本发明应用于碳化硼陶瓷制备领域。
Preparation method of boron carbide micro-nano mixed powder for hot pressed sintering
一种热压烧结用碳化硼微纳混合粉料的制备方法
WANG ZHIJIANG (Autor:in)
18.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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