Mechanical and physical behaviors of short pitch-based carbon fiber-reinforced HfB2–SiC matrix composites
Source abstract
Abstract
Abstract Short Pitch-based carbon fiber-reinforced HfB 2 matrix composites containing 20 vol% SiC, with fiber volume fractions in the range of 20–50%, were manufactured by hot-press process. Highly dense composite compacts were obtained at 2100 °C and 20 MPa for 60 min. The flexural strength of the composites was measured at room temperature and 1600 °C. The fracture toughness, thermal and electrical conductivities of the composites were evaluated at room temperature. The effects of fiber volume fractions on these properties were assessed. The flexural strength of the composites depended on the fiber volume fraction. In addition, the flexural strength was significantly greater at 1600 °C than at room temperature. The fracture toughness was improved due to the incorporation of fibers. The thermal and electrical conductivities decreased with the increase of fiber volume fraction, however.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
Show source-provided references
1. Materials for ultrahigh temperature structural applications
2. UHTCs: ultra-high temperature ceramic materials for extreme environment applications
3. UHTS composites for hypersonic applications
4. Concept for a damage−tolerant ceramic composite with a strong interfaces10.1111/j.1151-2916.1996.tb08138.x ↗
5. Processing and mechanical properties of short carbon fibers toughened zirconium diboride-based ceramics10.1016/j.matdes.2008.03.011 ↗
6. Characterization of hot-pressed short carbon fiber reinforced ZrB2–SiC ultra−high temperature ceramic composites10.1016/j.jallcom.2008.04.092 ↗
7. Preparation and characterization of C/SiC−ZrB2 composites by precursor infiltration and pyrolysis process10.1016/j.ceramint.2009.11.015 ↗
8. SiC chopped fibers reinforced ZrB2: effect of the sintering aid10.1016/j.scriptamat.2010.12.044 ↗
9. Average grain size in polycrystalline ceramics10.1111/j.1151-2916.1969.tb11975.x ↗
10. Use of the notched-beam test for evaluation of fracture energies of ceramics10.1111/j.1151-2916.1974.tb10843.x ↗
11. Flash method of determining thermal diffusivity, heat capacity and thermal conductivity10.1063/1.1728417 ↗
12. Thermal and electric properties in hot-pressed ZrB2−MoSi2−SiC composites10.1111/j.1551-2916.2007.01660.x ↗
13. Tensile properties of ultrahigh strength PAN-based, ultrahigh modulus Pitch-based and high ductility Pitch-based carbon fibers10.1016/j.carbon.2007.11.001 ↗
14. Processing, properties and arc jet oxidation of hafnium diboride/silicon carbide ultra high temperature ceramics10.1023/B:JMSC.0000041689.90456.af ↗
15. Effect of hot pressing time and temperature on the microstructure and mechanical properties of ZrB2−SiC10.1007/s10853-006-1274-2 ↗
16. Loehman · 2006
17. Modeling brittle and tough stress-strain behavior in unidirectional ceramic matrix composites10.1016/S1359-6454(98)00041-X ↗
18. Thermal conductivity in multi-wall carbon nanotube-silica-based nanocomposites10.1016/j.scriptamat.2006.10.025 ↗