Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of chopped fiber reinforced ceramic matrix composite material
The invention relates to a preparation method of a chopped fiber reinforced ceramic matrix composite material, and belongs to the technical field of composite material preparation. The method comprises the following steps: (1) putting Ti3SiC2 powder into an agate ball milling tank, and carrying out wet ball milling by taking absolute ethyl alcohol as a medium to obtain fine and uniform powder slurry; (2) dispersing chopped silicon carbide fibers into the slurry, continuously ball-milling, uniformly mixing the mixture, drying the mixture into a drying oven at 50-70 DEG C, sieving the mixture by a 80-mesh sieve to obtain SiCf/Ti3SiC2 mixed powder, and putting the mixed powder into a graphite mold for cold press molding; (3) putting the formed green body and the graphite mold into a discharge plasma sintering furnace, heating the green body to 1100-1300 DEG C in vacuum, and sintering the green body for 5-20 minutes by applying pressure of 30-50 MPa to obtain the SiCf/Ti3SiC2 ceramic composite material. The ceramic composite material is low in sintering preparation temperature, short in heat preservation time and excellent in mechanical property. In addition, the method has the advantages of simple preparation process flow, short preparation period and the like.
本发明涉及一种短切纤维增强陶瓷基复合材料的制备方法，属于复合材料制备技术领域。该方法包括如下步骤：(1)将Ti3SiC2粉末放入玛瑙球磨罐中，以无水乙醇为介质湿法球磨，得到细质均匀的粉末浆料；(2)将短切碳化硅纤维分散于上述浆料中，继续球磨均匀混合后放入烘箱50～70℃烘干，并过80目筛得到SiCf/Ti3SiC2混合粉体，混合粉体置入石墨模具中冷压成型；(3)将成型的坯体连同石墨模具一起放入放电等离子体烧结炉内，在真空下升温至1100～1300℃，烧结时间为5～20min，施加压力为30～50MPa，得到SiCf/Ti3SiC2陶瓷复合材料。该陶瓷复合材料不仅烧结制备温度较低，保温时间短，而且具有优异的力学性能。此外，还具有制备工艺流程简便，制备周期短等优势。
Preparation method of chopped fiber reinforced ceramic matrix composite material
The invention relates to a preparation method of a chopped fiber reinforced ceramic matrix composite material, and belongs to the technical field of composite material preparation. The method comprises the following steps: (1) putting Ti3SiC2 powder into an agate ball milling tank, and carrying out wet ball milling by taking absolute ethyl alcohol as a medium to obtain fine and uniform powder slurry; (2) dispersing chopped silicon carbide fibers into the slurry, continuously ball-milling, uniformly mixing the mixture, drying the mixture into a drying oven at 50-70 DEG C, sieving the mixture by a 80-mesh sieve to obtain SiCf/Ti3SiC2 mixed powder, and putting the mixed powder into a graphite mold for cold press molding; (3) putting the formed green body and the graphite mold into a discharge plasma sintering furnace, heating the green body to 1100-1300 DEG C in vacuum, and sintering the green body for 5-20 minutes by applying pressure of 30-50 MPa to obtain the SiCf/Ti3SiC2 ceramic composite material. The ceramic composite material is low in sintering preparation temperature, short in heat preservation time and excellent in mechanical property. In addition, the method has the advantages of simple preparation process flow, short preparation period and the like.
本发明涉及一种短切纤维增强陶瓷基复合材料的制备方法，属于复合材料制备技术领域。该方法包括如下步骤：(1)将Ti3SiC2粉末放入玛瑙球磨罐中，以无水乙醇为介质湿法球磨，得到细质均匀的粉末浆料；(2)将短切碳化硅纤维分散于上述浆料中，继续球磨均匀混合后放入烘箱50～70℃烘干，并过80目筛得到SiCf/Ti3SiC2混合粉体，混合粉体置入石墨模具中冷压成型；(3)将成型的坯体连同石墨模具一起放入放电等离子体烧结炉内，在真空下升温至1100～1300℃，烧结时间为5～20min，施加压力为30～50MPa，得到SiCf/Ti3SiC2陶瓷复合材料。该陶瓷复合材料不仅烧结制备温度较低，保温时间短，而且具有优异的力学性能。此外，还具有制备工艺流程简便，制备周期短等优势。
Preparation method of chopped fiber reinforced ceramic matrix composite material
一种短切纤维增强陶瓷基复合材料的制备方法
XU JINGJUN (Autor:in) / HE GUANGQI (Autor:in) / LI MEISHUAN (Autor:in) / QIAN YUHAI (Autor:in) / ZUO JUN (Autor:in)
01.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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