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

  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},
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
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