| 朱世步,孟祥利,张强,朱阳,杨星,闫联生,张晓虎.新型含锆聚碳硅烷制备C/C-SiC-ZrC复合材料及烧蚀性能[J].装备环境工程,2019,16(10):32-39. ZHU Shi-bu,MENG Xiang-li,ZHANG Qiang,ZHU Yang,YANG Xing,YAN Lian-sheng,ZHANG Xiao-hu.Preparation and Ablation Behavior of C/C-SiC-ZrC Composite by Novel Polyzirconocenecarbosilane[J].Equipment Environmental Engineering,2019,16(10):32-39. |
| 新型含锆聚碳硅烷制备C/C-SiC-ZrC复合材料及烧蚀性能 |
| Preparation and Ablation Behavior of C/C-SiC-ZrC Composite by Novel Polyzirconocenecarbosilane |
| 投稿时间：2019-01-11 修订日期：2019-02-19 |
| DOI：10.7643/issn.1672-9242.2019.10.006 |
| 中文关键词: 含锆聚碳硅烷 PIP工艺 C/C-SiC-ZrC复合材料 烧蚀性能 |
| 英文关键词:polyzirconocenecarbosilane (PZCS) precursor infiltration and pyrolysis (PIP) C/C-SiC-ZrC composites ablation property |
| 基金项目:国防基础科研项目(JCKY2017203C041) |
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| Author | Institution |
| ZHU Shi-bu | Xi′an Aerospace composites Research Institute, Xi′an 710025, China |
| MENG Xiang-li | Xi′an Aerospace composites Research Institute, Xi′an 710025, China |
| ZHANG Qiang | Xi′an Aerospace composites Research Institute, Xi′an 710025, China |
| ZHU Yang | Xi′an Aerospace composites Research Institute, Xi′an 710025, China |
| YANG Xing | Xi′an Aerospace composites Research Institute, Xi′an 710025, China |
| YAN Lian-sheng | Xi′an Aerospace composites Research Institute, Xi′an 710025, China |
| ZHANG Xiao-hu | Xi′an Aerospace composites Research Institute, Xi′an 710025, China |
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| 中文摘要: |
| 目的 提高C/C-SiC复合材料的抗烧蚀性能。方法 通过交联固化-碳化工艺获得新型含锆聚碳硅烷(Polyzirconocenecarbosilane, PZCS)裂解产物。采用FT-IR、XPS、TG、XRD、SEM等分析手段表征PZCS先驱体基本结构和固化、裂解产物结构及元素分布等。以PZCS为溶液浸渍先驱体，通过PIP工艺制备得到C/C-SiC-ZrC复合材料，采用氧乙炔烧蚀试验表征其抗烧蚀性能。结果 PZCS陶瓷先驱体经过交联固化工艺能够显著提高其陶瓷产率。TG结果表明，980 ℃时陶瓷产率达66.37%，所得陶瓷粉末为分散均匀的SiC-ZrC复相陶瓷。C/C-SiC-ZrC复合材料经过氧乙炔试验烧蚀600 s后，其线烧蚀率为0.0067 mm/s，表现出良好的抗烧蚀性能。结论 SiC-ZrC复相陶瓷基体烧蚀过程中，氧化形成SiO2和ZrO2等氧化物涂层，氧化物隔离层能够隔离氧气和热量，阻止其向复合材料内部进一步扩散，可有效提高复合材料烧蚀性能。 |
| 英文摘要: |
| Objective To improve the ablation property of C/C-SiC composites. Methods The novel polyzirconocenecarbosilane (PZCS) precursor was pyrolyzed through cross-linked and carbonization procedure. The structure, cross-linked, crystalline structure and element distribution of pyrolyzed ceramic of PZCS precursor were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), thermogravimetry (TG), X-ray diffraction (XRD) and scanning electron microscope (SEM). C/C-SiC-ZrC composite was prepared by precursor infiltration and pyrolysis with PZCS as a precursor. The ablation resistance property was characterized through oxyacetylene ablation test. Results It was obvious that the ceramic yield of PZCS precursor was improved after cross-lined and carbonization process. The TG result showed that the ceramic yield at 980 ℃ was about 66.37%, and the received ceramic was well-distributed ZrC-SiC multi-phase ceramic. After the C/C-SiC-ZrC composite was ablated by oxyacetylene flame for 600 s, its linear ablation was 0.0067 mm/s, showing very good anti-ablation performance. Conclusion The formation of ZrO2 and SiO2 layer during the ablation of SiC-ZrC multiphase ceramic matrix acted as an effective oxygen and heat barrier, preventing oxygen and heat from diffusing into composite, which could enhance its ablation property efficiently. |
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