Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultrahigh-temperature ceramic composite material and preparation method thereof
The invention provides an ultrahigh-temperature ceramic composite material and a preparation method thereof, and relates to the technical field of ultrahigh-temperature ceramic materials. The preparation method comprises the following steps: mixing HfC powder, TaC powder and TiO2 powder, and carrying out wet ball milling to obtain slurry; and sequentially carrying out drying and spark plasma sintering on the slurry to obtain the ultra-high-temperature ceramic composite material, the spark plasma sintering comprises first sintering and second sintering in sequence, the temperature of the first sintering is 1700-1900 DEG C, the pressure is 20-25 MPa, and the temperature and pressure maintaining time is 5-10 min; the temperature of the second sintering is 2100-2300 DEG C, the pressure is 30-35 MPa, and the temperature and pressure maintaining time is 10-20 min. According to the invention, TiO2 is introduced as a sintering aid and a sintering process is improved, so that the density of the Ta < 1-x > Hf < x > C ultra-high-temperature ceramic material is effectively improved, and the density is 95.31-95.93%.
本发明提供了一种超高温陶瓷复合材料及其制备方法，涉及超高温陶瓷材料技术领域。本发明将HfC粉、TaC粉和TiO2粉混合进行湿法球磨，得到浆料；将所述浆料依次进行干燥和放电等离子烧结，得到所述超高温陶瓷复合材料；所述放电等离子烧结包括依次进行第一烧结和第二烧结，所述第一烧结的温度为1700~1900℃，压力为20~25MPa，保温保压时间为5~10min；所述第二烧结的温度为2100~2300℃，压力为30~35MPa，保温保压时间为10~20min。本发明通过引入TiO2作为烧结助剂和改进烧结工艺，实现了Ta1‑xHfxC超高温陶瓷材料致密度的有效提升，其致密度为95.31~95.93%。
Ultrahigh-temperature ceramic composite material and preparation method thereof
The invention provides an ultrahigh-temperature ceramic composite material and a preparation method thereof, and relates to the technical field of ultrahigh-temperature ceramic materials. The preparation method comprises the following steps: mixing HfC powder, TaC powder and TiO2 powder, and carrying out wet ball milling to obtain slurry; and sequentially carrying out drying and spark plasma sintering on the slurry to obtain the ultra-high-temperature ceramic composite material, the spark plasma sintering comprises first sintering and second sintering in sequence, the temperature of the first sintering is 1700-1900 DEG C, the pressure is 20-25 MPa, and the temperature and pressure maintaining time is 5-10 min; the temperature of the second sintering is 2100-2300 DEG C, the pressure is 30-35 MPa, and the temperature and pressure maintaining time is 10-20 min. According to the invention, TiO2 is introduced as a sintering aid and a sintering process is improved, so that the density of the Ta < 1-x > Hf < x > C ultra-high-temperature ceramic material is effectively improved, and the density is 95.31-95.93%.
本发明提供了一种超高温陶瓷复合材料及其制备方法，涉及超高温陶瓷材料技术领域。本发明将HfC粉、TaC粉和TiO2粉混合进行湿法球磨，得到浆料；将所述浆料依次进行干燥和放电等离子烧结，得到所述超高温陶瓷复合材料；所述放电等离子烧结包括依次进行第一烧结和第二烧结，所述第一烧结的温度为1700~1900℃，压力为20~25MPa，保温保压时间为5~10min；所述第二烧结的温度为2100~2300℃，压力为30~35MPa，保温保压时间为10~20min。本发明通过引入TiO2作为烧结助剂和改进烧结工艺，实现了Ta1‑xHfxC超高温陶瓷材料致密度的有效提升，其致密度为95.31~95.93%。
Ultrahigh-temperature ceramic composite material and preparation method thereof
一种超高温陶瓷复合材料及其制备方法
LIU YANBO (Autor:in) / MA ZHUANG (Autor:in) / MOU GUANGYI (Autor:in) / LIU LING (Autor:in) / LIU SHAOPU (Autor:in) / WANG YIFAN (Autor:in) / CHI HUANYU (Autor:in) / HE SI (Autor:in)
03.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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