The role of carbon in microstructure evolution of SiBCO ceramics

Xia, Xiwen; Yang, Fan; Zhao, Gang; Liu, Xingyao; Chen, Tongzhou; Huang, Qing; Jian, Xigao; Song, Yujie; Xu, Jian

doi:10.1016/j.ceramint.2022.02.264

Cited by 7 publications

(2 citation statements)

References 33 publications

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“…Similarly, the temperatures at the peaks of the DTG curves of P-Ta-D are higher than those of P-Ta (Fig. 1(d)), which suggests that the addition of DVB increases crosslinking density and delays organic-inorganic conversion [32]. In stage III, above 760 °C, the curves reveal a slight weight loss (Fig.…”

Section: Molecular Structure and Pyrolysis Of Sspsmentioning

confidence: 91%

“…The formed Ta-C and Ta-O bonds indicates that TaCl5 accessed the J u s t A c c e p t e d 10 PCS chain by removing HCl[29,30]. For the synthesized P-Ta-D polymers, aromatic C-H bonds and phenyl C=C, C-C, and C-H bonds belonging to DVB verifies the successful introduction of DVB into SSPs networks[31,32]. To evaluate the effect of DVB in SSPs on the pyrolysis behavior, the TG curves by synchronous DSC and DTG analysis were adopted, as shown in Fig.1(b-d).…”

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confidence: 89%

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Heat dissipation of carbon shell in ZrC–SiC/TaC coating to improve protective ability against ultrahigh temperature ablation

Zhang,

et al. 2024

Journal of Advanced Ceramics

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To efficiently decrease the ablation heat accumulation and improve the ablation protective ability of ZrC-SiC/TaC coating on carbon/carbon composites, a J u s t A c c e p t e d 2 thermally conductive nano-network with ceramic@carbon core-shell structure was designed and constructed. Polymer-derived SiC/TaC with graphene carbon shell was synthesized and introduced into ZrC coating by supersonic atmospheric plasma spraying. Graphene shell paths were benefitted in increasing the heat transfer capability by lowering the surface temperature of about 200 °C during oxyacetylene ablation. The heat dissipation of the graphene shell in ZrC-SiC/TaC@C coating reduced the volatilization of low-melting-point phases and delayed the sintering of ZrO2 particles.Thus, the graphene shell in ZrC-SiC/TaC@C coating decreased the mass and linear ablation rates by 91.4 % and 93.7 % compared to ZrC-SiC/TaC coating, respectively. This work provided a constructive idea to improve the ablation resistance of the coatings by incorporating carbon nanomaterials with a function of heat dissipation.

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Section: Molecular Structure and Pyrolysis Of Sspsmentioning

confidence: 91%

mentioning

confidence: 89%