Xu Yunshu, Song Yongcai, Fu Yibei, et al. SYNTHESIS OF SiC CERAMICS BY PYROLYSIS OF ELECTRON BEAM IRRADIATED POLYCARBOSILANE Ⅰ.PYROLYSIS OF POLYCARBOSILANE IRRADIATED IN AIR[J]. Journal of Radiation Research and Radiation Processing, 1998,16(1):1-4.
Xu Yunshu, Song Yongcai, Fu Yibei, et al. SYNTHESIS OF SiC CERAMICS BY PYROLYSIS OF ELECTRON BEAM IRRADIATED POLYCARBOSILANE Ⅰ.PYROLYSIS OF POLYCARBOSILANE IRRADIATED IN AIR[J]. Journal of Radiation Research and Radiation Processing, 1998,16(1):1-4.DOI:
Polycarbosilane was irradiated in air by electron beam generated by an accelerator, and then heated to high temperature to produce the SiC ceramics. The results showed that crosslinking bonds including Si-C-Si and Si-O-Si was formed in the irradiated products,and the pyrolysis temperature was consequently elevated from 300℃ of non-irradiated PCS to more than 500℃ of samples irradiated to 2.3 MGy or above. Low molecular weight polycarbosilane and CH,4, were detected in the pyrolysis products. The PCS converted to SiC mainly by CH,4, release when absorbed dose was above 2.3 MGy.