A5032433207- Advanced ceramic materials synthesis
- Advanced materials and composites
- Aluminum Alloys Composites Properties
- MXene and MAX Phase Materials
- Boron and Carbon Nanomaterials Research
China Academy of Engineering Physics
2022-2024
Abstract The mechanical, thermophysical, and ablation properties of 2.5D C/HfC–SiC composites with various SiC/HfC ratios are studied. S7‐C/HfC–SiC composite a high volume ratio 30.4/15.2 has the highest flexural strength 203.4 ± 26.8 MPa fracture toughness 10.0 .5 MPa·m 1/2 . All have similar low thermal conductivity ∼2 W·m −1 ·K their CTEs in range .45–4.0 × 10 −6 /K from 30°C to 1400°C. S5‐C/HfC–SiC medium possesses lowest mass rate .29 .02 mg·cm −2 ·s linear .003 .0002 mm/s. endowed...
Abstract The C f /HfC‐SiC composite was produced by precursor infiltration and pyrolysis combined with gaseous silicon an open porosity as low 5.4% achieved. has a thermal conductivity of 21.4 W·m −1 ·K , in addition, its flexural strength, elastic modulus, fracture toughness are 328.9 ± 58.4 MPa, 48.9 2.8 GPa, 10.2 1.2 MPa·m 1/2 respectively. compact matrix the toughing mechanism fibers account for good mechanical properties. survives oxyacetylene torch test formation protective oxide scale...