Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of densified zirconium boride-silicon carbide composite ceramic
The invention provides a preparation method of densified zirconium boride silicon carbide composite ceramic, which comprises the following steps: introducing ZrB2 powder, titanium carbide powder, a sintering aid, a zirconium source, boron carbide and a C source in a mass ratio of (30-75):(5-45):(0-5):(0-30):(10-35):(5-25) into the raw materials, and carrying out in-situ reaction to obtain the densified zirconium boride silicon carbide composite ceramic. According to the method, the superfine zirconium boride grains are synthesized in the zirconium boride ceramic matrix, the sintering activityof zirconium boride is improved, the pressureless sintering technology is adopted, and the method has the advantages that the process is simple, the equipment requirement degree is low, the productioncost is low, and batch production is facilitated; and the prepared ZrB2 composite ceramic material has the excellent properties of high density, high-temperature oxidation resistance, high hardness,corrosion resistance, good thermal shock resistance, small resistance and the like, and has a great practical prospect in the fields of aerospace high-temperature-resistant materials, wear-resistant materials, cutting tools, thermocouple protection tubes, electrode materials and the like.
本发明提供一种致密化硼化锆‑碳化硅复合陶瓷的制备方法，所述复合陶瓷的原料中，ZrB2粉、碳化钛粉、烧结助剂、锆源、碳化硼、C源的质量配比为(30‑75):(5‑45):(0‑5):(0‑30):(10‑35):(5‑25)，在原料中，引入锆源、硼源和C源，通过原位反应，在硼化锆陶瓷基体中合成超细的硼化锆晶粒，提高了硼化锆的烧结活性，本发明采用无压烧结的技术，具有工艺简单、设备要求度低、生产成本低、便于批量化生产的优点，制得的ZrB2复合陶瓷材料具有致密度高、抗高温氧化、高硬度、耐腐蚀、耐热震性好、电阻小等优异性能，在航空航天耐高温材料、耐磨材料、切削工具、热电偶保护管以及电极材料等领域具有非常大的实用前景。
Preparation method of densified zirconium boride-silicon carbide composite ceramic
The invention provides a preparation method of densified zirconium boride silicon carbide composite ceramic, which comprises the following steps: introducing ZrB2 powder, titanium carbide powder, a sintering aid, a zirconium source, boron carbide and a C source in a mass ratio of (30-75):(5-45):(0-5):(0-30):(10-35):(5-25) into the raw materials, and carrying out in-situ reaction to obtain the densified zirconium boride silicon carbide composite ceramic. According to the method, the superfine zirconium boride grains are synthesized in the zirconium boride ceramic matrix, the sintering activityof zirconium boride is improved, the pressureless sintering technology is adopted, and the method has the advantages that the process is simple, the equipment requirement degree is low, the productioncost is low, and batch production is facilitated; and the prepared ZrB2 composite ceramic material has the excellent properties of high density, high-temperature oxidation resistance, high hardness,corrosion resistance, good thermal shock resistance, small resistance and the like, and has a great practical prospect in the fields of aerospace high-temperature-resistant materials, wear-resistant materials, cutting tools, thermocouple protection tubes, electrode materials and the like.
本发明提供一种致密化硼化锆‑碳化硅复合陶瓷的制备方法，所述复合陶瓷的原料中，ZrB2粉、碳化钛粉、烧结助剂、锆源、碳化硼、C源的质量配比为(30‑75):(5‑45):(0‑5):(0‑30):(10‑35):(5‑25)，在原料中，引入锆源、硼源和C源，通过原位反应，在硼化锆陶瓷基体中合成超细的硼化锆晶粒，提高了硼化锆的烧结活性，本发明采用无压烧结的技术，具有工艺简单、设备要求度低、生产成本低、便于批量化生产的优点，制得的ZrB2复合陶瓷材料具有致密度高、抗高温氧化、高硬度、耐腐蚀、耐热震性好、电阻小等优异性能，在航空航天耐高温材料、耐磨材料、切削工具、热电偶保护管以及电极材料等领域具有非常大的实用前景。
Preparation method of densified zirconium boride-silicon carbide composite ceramic
一种致密化硼化锆-碳化硅复合陶瓷的制备方法
RU HONGQIANG (Autor:in) / SUN WEIKANG (Autor:in) / WANG CHUNHUA (Autor:in)
16.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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