Porous SiC ceramics with dendritic pore structures by freeze casting from chemical cross-linked polycarbosilane
Source abstract
Abstract
Abstract In this study, a commercial polycarbosilane (PCS) and divinylbenzene (DVB) were used as the preceramic polymer precursor and crosslinking agent, respectively to form porous silicon carbide (SiC) ceramics by freeze casting DVB/camphene/PCS solutions. Porous silicon carbide (SiC) with a dendritic pore structure and connecting bridges was obtained after pyrolysis at 1200 °C. The effects of DVB and PCS content on the rheological properties of the solution and the morphological characteristics and the compressive strengths of SiC ceramics were investigated. The use of DVB and the resulting chemical cross-linking yielded modified pore characteristics and much lower oxygen content in pyrolyzed SiC compared to the conventional thermal curing method. A compressive strength of 18.7 MPa was obtained for pyrolyzed SiC prepared with 20 wt% PCS and a 0.2 DVB/PCS mass ratio.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Recycling and utilization of industrial and municipal waste in materials production · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (49)
Show source-provided references
1. Biomorphic cellular silicon carbide ceramics from wood: I. Processing and microstructure10.1016/S0955-2219(98)00156-3 ↗
2. Synthesis of continuous silicon carbide fibre10.1007/BF01106555 ↗
3. Low-temperature fabrication and characterization of porous SiC ceramics using silicone resin as binder10.1016/j.ceramint.2006.08.018 ↗
4. Porous SiC ceramics fabricated by reactive infiltration of gaseous silicon into charcoal10.1016/j.ceramint.2003.11.001 ↗
5. Synthesis and characterization of Si/SiC ceramics prepared using cotton fabric10.1016/j.ceramint.2008.04.014 ↗
6. Effect of steam activation on development of light weight biomorphic porous SiC from pine wood precursor10.1007/s11665-012-0286-0 ↗
7. Structural studies of active carbon used in the growth of silicon carbide catalyst support10.1007/BF00356512 ↗
8. Synthesis of silicon carbide nanorods by catalyst-assisted pyrolysis of polymeric precursor10.1016/j.cplett.2003.11.031 ↗
9. Synthesis of silicon carbide nanowires by CVD without using a metallic catalyst10.1016/j.matchemphys.2005.12.014 ↗
10. Environmental effects on microstructure and strength of SiC-based hot gas filters10.1016/S0955-2219(00)00326-5 ↗
11. Corrosion of silicon carbide hot gas filter candles in gasification environment10.1016/j.jeurceramsoc.2013.10.011 ↗
12. Production of ceramic foam filters for molten metal filtration using expanded polystyrene10.1016/j.jeurceramsoc.2006.04.129 ↗
13. Fabrication and microstructural characterization of porous SiC membrane supports with Al2O3–Y2O3 additives10.1016/j.memsci.2009.04.033 ↗
14. Fabrication of silicon carbide membranes on highly permeable supports10.1016/j.memsci.2017.05.038 ↗
15. Microstructural characterization of porous silicon carbide membrane support with and without alumina additive10.1111/j.1551-2916.2006.00931.x ↗
16. Biocompatibility of silicon carbide in colony formation test in vitro. A promising new ceramic THR implant coating material10.1007/s004020050319 ↗
17. Investigation on grindability of medical implant material using a silicon carbide wheel with different cooling conditions10.1016/j.promfg.2017.07.016 ↗
18. Current status of silicon carbide based high-temperature gas sensors10.1109/16.748877 ↗
19. The piezoresistive effect of SiC for MEMS sensors at high temperatures: a review10.1109/JMEMS.2015.2470132 ↗
20. Computation of radar absorbing silicon carbide foams and their silica matrix composites10.1016/j.commatsci.2006.05.024 ↗
21. High-strength porous silicon carbide ceramics by an oxidation-bonding technique10.1111/j.1151-2916.2002.tb00542.x ↗
22. Fabrication of mullite-bonded porous silicon carbide ceramics by in situ reaction bonding10.1016/j.jeurceramsoc.2006.06.003 ↗
23. Processing of polymer-derived porous SiC body using allylhydridopolycarbosilane (AHPCS) and PMMA microbeads10.2109/jcersj2.119.563 ↗
24. A novel processing approach for free-standing porous non-oxide ceramic supports from polycarbosilane and polysilazane precursors10.1016/j.jeurceramsoc.2015.03.009 ↗
25. Silicon carbide-based foams from direct blowing of polycarbosilane10.1016/j.jeurceramsoc.2011.09.009 ↗
26. Processing of microcellular preceramics using carbon dioxide10.1016/S0266-3538(03)00270-7 ↗
27. A hard-templating route towards ordered mesoporous tungsten carbide and carbide-derived carbons10.1016/j.micromeso.2013.12.009 ↗
28. Tough silicon carbide macro/mesocellular crack-free monolithic foams10.1039/c1jm12084k ↗
29. Novel SiC/C aerogels through pyrolysis of polycarbosilane precursors10.1002/adem.201400134 ↗
30. Characterization of the evolution and properties of silicon carbide derived from a preceramic polymer precursor10.1111/jace.12273 ↗
31. Synthesis, characterization, and ceramization of a SiC–ZrC–C preceramic polymer precursor10.1007/s10853-015-8840-4 ↗
32. Porous polymer derived ceramics10.1016/j.mser.2016.05.001 ↗
33. Freezing as a path to build complex composites10.1126/science.1120937 ↗
34. Effects of rheological properties on ice-templated porous hydroxyapatite ceramics10.1016/j.msec.2012.08.048 ↗
35. Porous hydroxyapatite ceramics fabricated by an ice-templating method10.1016/j.scriptamat.2010.11.001 ↗
36. Hierarchically ordered micro/meso/macroporous polymer-derived ceramic monoliths fabricated by freeze-casting10.1016/j.jeurceramsoc.2015.09.018 ↗
37. Highly aligned porous silicon carbide ceramics by freezing polycarbosilane/camphene solution10.1111/j.1551-2916.2007.01703.x ↗
38. Directionally aligned macroporous SiOC via freeze casting of preceramic polymers10.1016/j.jeurceramsoc.2015.02.013 ↗
39. Silicon-based interpentratry polymer networks(IPNS): synthesis and properties10.1021/ma971308m ↗
40. Novel polysiloxane and polycarbosilane aerogels via hydrosilylation of preceramic polymers10.1039/c2jm00020b ↗
41. Comparison of microwave hybrid and conventional heating of preceramic polymers to form silicon carbide and silicon oxycarbide ceramics10.1111/j.1151-2916.2000.tb01440.x ↗
42. Synthesis and properties of crosslinked polycarbosilanes by hydrosilylation polymerization10.1295/polymj.31.452 ↗
43. Mechanical properties and failure behavior of unidirectional porous ceramics10.1038/srep24326 ↗
44. In situ determination of the active catalyst in hydrosilylation reactions using highly reactive Pt(0) catalyst precursors10.1021/ja9825377 ↗
45. Highly aligned porous silicon carbide ceramics by freezing polycarbosilane/camphene solution10.1111/j.1551-2916.2007.01703.x ↗
46. Suspension- and solution-based freeze casting for porous ceramics
47. Conversion of polycarbosilane (PCS) to SiC-based ceramic part 1. Characterisation of PCS and curing products10.1023/A:1017942826657 ↗
48. Conversion of polycarbosilane (PCS) to SiC-based ceramic part II pyrolysis and characterisation10.1023/A:1017994810727 ↗
49. Kinetics model for the growth of silicon carbide by the reaction of liquid silicon with carbon10.1111/j.1151-2916.1995.tb08685.x ↗