Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of diamond boron carbide composite ceramic
The invention discloses a preparation method of diamond boron carbide composite ceramic. The preparation method comprises the following steps: uniformly mixing diamond powder with boron carbide, graphite and phenolic resin by using absolute ethyl alcohol; preparing particles by adopting a freeze spray granulation mode or a manual crushing and sieving mode; hot press molding; the pressed blank is subjected to degreasing treatment; and carrying out boriding sintering on the obtained porous preform. According to the diamond-boron carbide composite material prepared by the method, impurities such as silicon carbide and residual silicon possibly generated in a sample are reduced, so that the performance of the sample is more excellent; according to the method, large-particle diamond is selected for freeze spray granulation, so that phenolic resin is more uniformly wrapped on the surface of the diamond, the surface of the diamond is carbonized at a high temperature and reacts with boron powder to generate boron carbide in situ, and the interior of a sample is more compact; the hardness and the three-point bending strength of the prepared diamond-boron carbide composite material are greatly improved, and the diamond-boron carbide composite material is completely suitable for the requirements of bulletproof ceramics.
本发明公开了一种金刚石碳化硼复合陶瓷的制备方法，包括如下步骤：将金刚石粉体与碳化硼、石墨、酚醛树脂用无水乙醇混合均匀；采用冷冻喷雾造粒的方式或人工破碎过筛的方式制成微粒；热压成型；将压制坯体进行脱脂处理；将得到的多孔预制体进行渗硼烧结即可。本发明制备的金刚石‑碳化硼复合材料，减少了样品中可能会产生的碳化硅、残余硅等杂质，使样品的性能更加优越；本发明选用较大颗粒的金刚石进行冷冻喷雾造粒，使酚醛树脂更加均匀的包裹在金刚石表面，在高温下金刚石表面会有碳化，与硼粉发生反应原位生成碳化硼，使样品内部更加密实；本发明制备的金刚石‑碳化硼复合材料的硬度、三点弯曲强度都有很大的提高，完全适用于防弹陶瓷的需求。
Preparation method of diamond boron carbide composite ceramic
The invention discloses a preparation method of diamond boron carbide composite ceramic. The preparation method comprises the following steps: uniformly mixing diamond powder with boron carbide, graphite and phenolic resin by using absolute ethyl alcohol; preparing particles by adopting a freeze spray granulation mode or a manual crushing and sieving mode; hot press molding; the pressed blank is subjected to degreasing treatment; and carrying out boriding sintering on the obtained porous preform. According to the diamond-boron carbide composite material prepared by the method, impurities such as silicon carbide and residual silicon possibly generated in a sample are reduced, so that the performance of the sample is more excellent; according to the method, large-particle diamond is selected for freeze spray granulation, so that phenolic resin is more uniformly wrapped on the surface of the diamond, the surface of the diamond is carbonized at a high temperature and reacts with boron powder to generate boron carbide in situ, and the interior of a sample is more compact; the hardness and the three-point bending strength of the prepared diamond-boron carbide composite material are greatly improved, and the diamond-boron carbide composite material is completely suitable for the requirements of bulletproof ceramics.
本发明公开了一种金刚石碳化硼复合陶瓷的制备方法，包括如下步骤：将金刚石粉体与碳化硼、石墨、酚醛树脂用无水乙醇混合均匀；采用冷冻喷雾造粒的方式或人工破碎过筛的方式制成微粒；热压成型；将压制坯体进行脱脂处理；将得到的多孔预制体进行渗硼烧结即可。本发明制备的金刚石‑碳化硼复合材料，减少了样品中可能会产生的碳化硅、残余硅等杂质，使样品的性能更加优越；本发明选用较大颗粒的金刚石进行冷冻喷雾造粒，使酚醛树脂更加均匀的包裹在金刚石表面，在高温下金刚石表面会有碳化，与硼粉发生反应原位生成碳化硼，使样品内部更加密实；本发明制备的金刚石‑碳化硼复合材料的硬度、三点弯曲强度都有很大的提高，完全适用于防弹陶瓷的需求。
Preparation method of diamond boron carbide composite ceramic
一种金刚石碳化硼复合陶瓷的制备方法
WANG KAI (Autor:in) / TAO GANG (Autor:in) / WEI GUANGHUI (Autor:in) / WANG JING (Autor:in)
02.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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