TY - JOUR
T1 - Influence of carbon content on the fabrication of ZrB2-SiC-YSi2 ultra-high temperature ceramics via reactive melt infiltration
AU - Zhang, Binghui
AU - Liu, Yongsheng
AU - Lv, Yunlei
AU - Fu, Shaolin
AU - Sun, Xiaokun
AU - Cao, Yejie
AU - Dong, Ning
AU - Tu, Jianyong
N1 - Publisher Copyright:
© 2024
PY - 2024/12/15
Y1 - 2024/12/15
N2 - To address the requirements for reusable thermal protection materials, ZrB2-SiC-YSi2 ceramics were developed for the first time using the reactive melt infiltration (RMI) technique. This study systematically examines the influence of carbon content on the densification and microstructural of ZrB2-SiC-YSi2 ceramics. The results demonstrate that with increasing carbon content, the bulk density initially increases and then decreases, while the open porosity decreases initially before rising. The maximum density of the ceramics is 3.80 g/cm³ and the open porosity is as low as 0.17 % when the graphite carbon content is 20 wt%. Further analysis of densification behavior and phase morphology showed that the residual Si ratio of ZSY-2 specimen decreased from 10 % to about 4.2 %, while the SiC ratio increased from 24.6 % to 29.8 %. The primary phases present in the ZrB2-SiC-YSi2 ceramics synthesized via the RMI process include ZrB2, YSi2, and SiC, with minor phases of Y5Si3C and free Si detected. Finally, the oxidation behavior of ZrB2-SiC-YSi2 ceramics at an oxidation temperature of 1550 °C was verified. Its main oxidation products are ZrO2, Y2O3, SiO2, ZrSiO4, Y2Si2O7, and yttrium silicate phase with excellent oxidation resistance is determined to be generated. These advantages demonstrate the significant potential of the RMI process in advancing the fabrication of ultra-high-temperature ceramics.
AB - To address the requirements for reusable thermal protection materials, ZrB2-SiC-YSi2 ceramics were developed for the first time using the reactive melt infiltration (RMI) technique. This study systematically examines the influence of carbon content on the densification and microstructural of ZrB2-SiC-YSi2 ceramics. The results demonstrate that with increasing carbon content, the bulk density initially increases and then decreases, while the open porosity decreases initially before rising. The maximum density of the ceramics is 3.80 g/cm³ and the open porosity is as low as 0.17 % when the graphite carbon content is 20 wt%. Further analysis of densification behavior and phase morphology showed that the residual Si ratio of ZSY-2 specimen decreased from 10 % to about 4.2 %, while the SiC ratio increased from 24.6 % to 29.8 %. The primary phases present in the ZrB2-SiC-YSi2 ceramics synthesized via the RMI process include ZrB2, YSi2, and SiC, with minor phases of Y5Si3C and free Si detected. Finally, the oxidation behavior of ZrB2-SiC-YSi2 ceramics at an oxidation temperature of 1550 °C was verified. Its main oxidation products are ZrO2, Y2O3, SiO2, ZrSiO4, Y2Si2O7, and yttrium silicate phase with excellent oxidation resistance is determined to be generated. These advantages demonstrate the significant potential of the RMI process in advancing the fabrication of ultra-high-temperature ceramics.
KW - Carbon content
KW - Densification
KW - Microstructural
KW - Reactive melt infiltration
KW - ZrB-SiC-YSi ceramics
UR - http://www.scopus.com/inward/record.url?scp=85207810419&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2024.10.403
DO - 10.1016/j.ceramint.2024.10.403
M3 - 文章
AN - SCOPUS:85207810419
SN - 0272-8842
VL - 50
SP - 55438
EP - 55448
JO - Ceramics International
JF - Ceramics International
IS - 24
ER -