Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultrahigh-hardness and high-toughness boron carbide ceramic material and preparation method thereof
The invention discloses an ultrahigh-hardness and high-toughness boron carbide ceramic material and a preparation method thereof, the ultrahigh-hardness and high-toughness boron carbide ceramic material comprises the following raw material components: B4C powder and Si powder, the volume percentage content of the B4C powder is 95-99.5%, and the volume percentage content of the Si powder is 0.5-5%. The preparation method comprises the following steps: A, powder mixing: carrying out planetary ball-milling mixing on B4C powder and Si powder in proportion, wherein ball-milling media are zirconium oxide balls and absolute ethyl alcohol; b, spark plasma sintering: putting the ball-milled mixed powder into a graphite mold, then putting the graphite mold into a spark plasma sintering cavity for sintering to obtain the ultrahigh-hardness and high-toughness boron carbide ceramic material, and taking the ultrahigh-hardness and high-toughness boron carbide ceramic material out of the graphite mold after cooling. According to the preparation method, the problems of densification and toughness of existing boron carbide ceramics are solved, and the boron carbide ceramic material with ultrahigh hardness and high toughness is successfully prepared.
本发明公开一种超高硬度和高韧性的碳化硼陶瓷材料及其制备方法，其原料成分为B4C粉末和Si粉末，其中，B4C粉末的体积百分比含量为95～99.5％，Si粉末的体积百分比含量为0.5～5％。其制备方法包括以下步骤：A、粉末混合：将B4C粉末和Si粉末按比例进行行星球磨混合，球磨介质为氧化锆球和无水乙醇；B、放电等离子烧结：将球磨后的混合粉体放入石墨模具中，再将石墨模具放入放电等离子烧结腔体中进行烧结即得到超高硬度和高韧性的碳化硼陶瓷材料，待冷却后将超高硬度和高韧性的碳化硼陶瓷材料从石墨模具中取出。本发明克服了现有对于碳化硼陶瓷的致密化和韧性问题，成功制备出兼具超高硬度和高韧性的碳化硼陶瓷材料。
Ultrahigh-hardness and high-toughness boron carbide ceramic material and preparation method thereof
The invention discloses an ultrahigh-hardness and high-toughness boron carbide ceramic material and a preparation method thereof, the ultrahigh-hardness and high-toughness boron carbide ceramic material comprises the following raw material components: B4C powder and Si powder, the volume percentage content of the B4C powder is 95-99.5%, and the volume percentage content of the Si powder is 0.5-5%. The preparation method comprises the following steps: A, powder mixing: carrying out planetary ball-milling mixing on B4C powder and Si powder in proportion, wherein ball-milling media are zirconium oxide balls and absolute ethyl alcohol; b, spark plasma sintering: putting the ball-milled mixed powder into a graphite mold, then putting the graphite mold into a spark plasma sintering cavity for sintering to obtain the ultrahigh-hardness and high-toughness boron carbide ceramic material, and taking the ultrahigh-hardness and high-toughness boron carbide ceramic material out of the graphite mold after cooling. According to the preparation method, the problems of densification and toughness of existing boron carbide ceramics are solved, and the boron carbide ceramic material with ultrahigh hardness and high toughness is successfully prepared.
本发明公开一种超高硬度和高韧性的碳化硼陶瓷材料及其制备方法，其原料成分为B4C粉末和Si粉末，其中，B4C粉末的体积百分比含量为95～99.5％，Si粉末的体积百分比含量为0.5～5％。其制备方法包括以下步骤：A、粉末混合：将B4C粉末和Si粉末按比例进行行星球磨混合，球磨介质为氧化锆球和无水乙醇；B、放电等离子烧结：将球磨后的混合粉体放入石墨模具中，再将石墨模具放入放电等离子烧结腔体中进行烧结即得到超高硬度和高韧性的碳化硼陶瓷材料，待冷却后将超高硬度和高韧性的碳化硼陶瓷材料从石墨模具中取出。本发明克服了现有对于碳化硼陶瓷的致密化和韧性问题，成功制备出兼具超高硬度和高韧性的碳化硼陶瓷材料。
Ultrahigh-hardness and high-toughness boron carbide ceramic material and preparation method thereof
一种超高硬度和高韧性的碳化硼陶瓷材料及其制备方法
LU YA (Autor:in) / TAN HUA (Autor:in) / ZHANG HAIBO (Autor:in) / ZHANG GUOJUN (Autor:in) / CHENG LONG (Autor:in) / GUO XIN (Autor:in) / XIAO JIANZHONG (Autor:in) / ZHANG SHUNPING (Autor:in) / ZHANG XIAODONG (Autor:in) / LIU LAN (Autor:in)
30.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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