Phase separation in pre-ceramic polymers blends and its influence on the microstructure of ZrC/SiC ceramic derivatives

@article{Li2015PhaseSI,
  title={Phase separation in pre-ceramic polymers blends and its influence on the microstructure of ZrC/SiC ceramic derivatives},
  author={Jiewen Li and Shouquan Yu and Yang Zhou and Min Ge and Yangbao Qian and W. Zhang},
  journal={Materials Letters},
  year={2015},
  volume={156},
  pages={72-75}
}
Ultra-high temperature ceramics (UHTCs) composed of ZrC and SiC were fabricated via pyrolysis of hybrid polymeric precursors comprising of polycarbosilane (PCS) and polyzirconobutanediol (PZC). Phase separation in these polymers blends during different removal methods of toluene solution by freezing drying, vacuum drying and rotary evaporation was studied. Elements and phase distribution as well as molecular aggregation state in the hybrid polymeric precursors and the pyrolyzed composite… Expand
6 Citations
Synthesis and pyrolysis of non-oxide precursors for ZrC/SiC and HfC/SiC composite ceramics
Abstract Multiphase ceramics like ZrC/SiC are promising candidates as ultra-high temperature ceramics for applications in extreme environments. In this work, non-oxide precursors for ZrC/SiC andExpand
Preparation and high‐temperature behavior of HfC–SiC nanocomposites derived from a non‐oxygen single‐source‐precursor
A single-source precursor for the preparation of HfC-SiC ceramics was synthesized via a Grignard reaction using bis(cyclopentadienyl)hafnium(IV) dichloride, trans-1,4-dibromo-2-butene, andExpand
Impact of a Supersonic Dissociated Air Flow on the Surface of HfB2–30 vol % SiC UHTC Produced by the Sol–Gel Method
A new method to produce ultra-high-temperature ceramic composites under rather mild conditions (1700°C, 30 MPa, treatment time 15 min) was applied to synthesize a relatively dense (ρrel = 84.5%)Expand
Graphene-based metal matrix nanocomposites: Recent development and challenges
This articles reviews till-date available literature on metal matrix composites reinforced with graphene, CNT and other carbonaceous materials. The article has a special focus on the mechanical,Expand
Polymer‐Derived Ultra‐High Temperature Ceramics (UHTCs) and Related Materials
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching andExpand
Investigation of micro-surface potential of coals with different metamorphism by AFM
Abstract Micro-surface potential of different coals (Reflectance range; Ro = 0.90% ~ 2.47%) was measured by atomic force microscopy (AFM) at five scanning scales, attempting to gain clearer insightsExpand

References

SHOWING 1-7 OF 7 REFERENCES
Pyrolysis synthesis and microstructure of zirconium carbide from new preceramic polymers
ZrC was synthesized by pyrolysis of a novel polymeric precursor, which was prepared from the reaction of zirconium tetrachloride with acetylacetone, methanol and 1,4-butanediol. The pyrolysisExpand
Synthesis of nano-crystalline ZrB2/ZrC/SiC ceramics by liquid precursors
Abstract ZrB2/ZrC/SiC precursors were prepared in a one-pot reaction of polyzirconoxanesal with boric acid and poly(methylsilylene)ethynylene. The pyrolysis of the precursors at 1400 °C in argon ledExpand
Combination of SHS and SPS techniques for fabrication of fully dense ZrB2-ZrC-SiC composites
A novel method for the fabrication of fully dense ZrB2-ZrC-SiC Ultra High Temperature Ceramic (UHTC) materials is proposed. It consists of first synthesizing ZrB2-40 vol.% ZrC-12 vol.% SiC powders byExpand
Morphology and Formation Mechanism of TaC Made by Liquid Phase Infiltration Method in C/C Composites
C/C composites were infiltrated with tantalum-contained organic solution, solidified and thermally treated to produce C/C-TaC composites. The results show that tantalum-contained organic solutionExpand
A novel microwave route for the preparation of ZrC-SiC composites
Abstract A novel microwave-assisted carbothermal reduction and carburization route has been used to prepare ZrC–SiC composite powders. Both zircon and mixtures of ZrO2 and SiO2 were used as startingExpand
The resistance to oxidation of an HfB2–SiC composite
Abstract The oxidation resistance of an hot-pressed HfB 2 –SiC composite was studied through non-isothermal and isothermal treatments at temperatures up to 1600 °C in air. The most severe oxidationExpand
Tapping-Mode AFM Studies Using Phase Detection for Resolution of Nanophases in Segmented Polyurethanes and Other Block Copolymers
The nanophase separated hard segment domains in solvent cast films of a segmented polyurethane and a segmented polyamide elastomer were imaged in real space using phase and topographical informationExpand