Pyrolysis Mechanism of Zr-Si Precursor and Ablation Behavior of C/C-ZrC-SiC Composites Prepared by PIP Method AITranslate
Abstract AITranslate
C/C-ZrC-SiC composites were prepared by precursor infiltration and pyrolysis using poly-meric organic zirconium precursor(POZ)and polycarbosilane(PCS)as precursor.Thermogravimetric behavior,phase conversion and microstructure of Zr-Si mixed precursors during pyrolysis were studied by thermal gravimetric analyzer,X-ray diffraction and scanning electron microscope,and the microstructure and ablation behavior of the composites were analyzed in detail.The results indicate that when Zr-Si mixed precursors is heated from room temperature to 1 200℃,ZrC precursor transforms to inorganic ZrO2.When the pyrolysis temperature rises to 1 600℃,ZrO2 can be reduced to ZrC ceramics by carbothermal reduction reaction.The transition temperature of the SiC crystal is 1 200~2 000℃.The microstructure of the C/C-ZrC-SiC composites after ablation shows that the prepared composites exhibit good ablation resistance.
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Basic Information:
DOI：
Chinese Library Classification Number:TB33[一般工业技术—材料科学与工程]
Citation Information:
C/C-ZrC-SiC composites were prepared by precursor infiltration and pyrolysis using poly-meric organic zirconium precursor(POZ)and polycarbosilane(PCS)as precursor.Thermogravimetric behavior,phase conversion and microstructure of Zr-Si mixed precursors during pyrolysis were studied by thermal gravimetric analyzer,X-ray diffraction and scanning electron microscope,and the microstructure and ablation behavior of the composites were analyzed in detail.The results indicate that when Zr-Si mixed precursors is heated from room temperature to 1 200℃,ZrC precursor transforms to inorganic ZrO2.When the pyrolysis temperature rises to 1 600℃,ZrO2 can be reduced to ZrC ceramics by carbothermal reduction reaction.The transition temperature of the SiC crystal is 1 200~2 000℃.The microstructure of the C/C-ZrC-SiC composites after ablation shows that the prepared composites exhibit good ablation resistance.
quote
| GB/T 7714-2015 | [1] LIU Chun-xuan, CAO Liu-xu, HUANG Qi-zhong. Pyrolysis Mechanism of Zr-Si Precursor and Ablation Behavior of C/C-ZrC-SiC Composites Prepared by PIP Method[J]. Rare Metals and Cemented Carbides, 2019(2): 22-29. |
| MLA | [1] LIU Chun-xuan, et al., "Pyrolysis Mechanism of Zr-Si Precursor and Ablation Behavior of C/C-ZrC-SiC Composites Prepared by PIP Method." Rare Metals and Cemented Carbides, no. 2, 2019, pp. 22-29. |
| APA | [1] LIU Chun-xuan, CAO Liu-xu, & HUANG Qi-zhong. (2019). Pyrolysis Mechanism of Zr-Si Precursor and Ablation Behavior of C/C-ZrC-SiC Composites Prepared by PIP Method. Rare Metals and Cemented Carbides(2), 22-29. |
| IEEE | [1] LIU Chun-xuan, CAO Liu-xu, and HUANG Qi-zhong, "Pyrolysis Mechanism of Zr-Si Precursor and Ablation Behavior of C/C-ZrC-SiC Composites Prepared by PIP Method," Rare Metals and Cemented Carbides, no. 2, pp. 22-29, 2019. keywords: {Zr-Si;pyrolysis mechanism;precursor infiltration and pyrolysis;C/C-ZrC-SiC composites} |