Cansas-II SiCf/SiC复合材料的高温拉伸蠕变行为

荆开开, 管皞阳, 朱思雨, 张超, 刘永胜, 王波, 王晶, 李玫, 张程煜

Tensile Creep Behavior of Cansas-II SiCf/SiC Composites at High Temperatures

JING Kaikai, GUAN Haoyang, ZHU Siyu, ZHANG Chao, LIU Yongsheng, WANG Bo, WANG Jing, LI Mei, ZHANG Chengyu

表3 2D-SiCf/SiC复合材料在空气中的高温拉伸蠕变性能

Table 3 Tensile creep properties of 2D-SiCf/SiC composites in air at high temperatures

Specimen Tempera- ture/℃ Stress/ MPa Steady-state creep strain rate/s-1 Creep rupture time/h Creep strain/% 2D-SiCf/SiC 1200 100 1.86×10-10 >560 0.20 1200 110 4.95×10-10 >560 0.23 1200 120 2.16×10-9 42 0.18 1200 140 8.45×10-7 0.1 0.21 1300 90 5.62×10-10 >500 0.28 1300 100 1.73×10-9 70 0.20 1300 120 1.86×10-8 6 0.28 1400 80 1.32×10-9 88 0.33 1400 100 1.46×10-8 1.6 0.57 CVI-SiCf/SiC[13] 1300 75 2.3×10-9 111.1 — 1300 90 6.2×10-8 33.4 — 1300 120 3.6×10-7 0.83 — 1300 150 3.0×10-6 0.14 — MI-SiCf/SiC[15] 1204 125 3.0×10-11 >1000 0.25 1204 140 2.3×10-10 >1000 0.31 1204 150 — 82.1 0.29