{"title":"C/C-Hf1-xZrxC 复合材料在高于 2700 °C 的氧乙炔焰下的抗烧蚀性","authors":"","doi":"10.1016/j.compositesb.2024.111855","DOIUrl":null,"url":null,"abstract":"<div><div>To the better application of C/C composites in thermal components of vehicles above 2700 °C, C/C–Hf<sub>1-x</sub>Zr<sub>x</sub>C composites were prepared by CLVD, and the ablation behavior of composites was investigated. The results show that C/C–Hf<sub>0.5</sub>Zr<sub>0.5</sub>C has excellent ablation properties with linear and mass ablation rates of −0.23 μm/s and −0.31 mg/(s·cm<sup>2</sup>), respectively. ZrO<sub>2</sub> molten phase and Hf<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> particles are generated on the surface of C/C–Hf<sub>1-x</sub>Zr<sub>x</sub>C composites during ablation. During the ablation process, defects are healed by the ZrO<sub>2</sub> molten phase due to its mobility, which inhibits the diffusion of oxygen into the substrate. The ZrO<sub>2</sub> molten phase is stabilized by the pinning effect of the Hf<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> particles, which makes the ZrO<sub>2</sub> molten phase better resistant to the scouring of the air stream. A relatively complete oxide layer is generated on the C/C–Hf<sub>0.5</sub>Zr<sub>0.5</sub>C surface, with a moderate amount of Hf<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> exerting a pinning effect to hold the ZrO<sub>2</sub> molten phase.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":null,"pages":null},"PeriodicalIF":12.7000,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ablation resistance of C/C–Hf1-xZrxC composites under an oxyacetylene flame at above 2700 °C\",\"authors\":\"\",\"doi\":\"10.1016/j.compositesb.2024.111855\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>To the better application of C/C composites in thermal components of vehicles above 2700 °C, C/C–Hf<sub>1-x</sub>Zr<sub>x</sub>C composites were prepared by CLVD, and the ablation behavior of composites was investigated. The results show that C/C–Hf<sub>0.5</sub>Zr<sub>0.5</sub>C has excellent ablation properties with linear and mass ablation rates of −0.23 μm/s and −0.31 mg/(s·cm<sup>2</sup>), respectively. ZrO<sub>2</sub> molten phase and Hf<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> particles are generated on the surface of C/C–Hf<sub>1-x</sub>Zr<sub>x</sub>C composites during ablation. During the ablation process, defects are healed by the ZrO<sub>2</sub> molten phase due to its mobility, which inhibits the diffusion of oxygen into the substrate. The ZrO<sub>2</sub> molten phase is stabilized by the pinning effect of the Hf<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> particles, which makes the ZrO<sub>2</sub> molten phase better resistant to the scouring of the air stream. A relatively complete oxide layer is generated on the C/C–Hf<sub>0.5</sub>Zr<sub>0.5</sub>C surface, with a moderate amount of Hf<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> exerting a pinning effect to hold the ZrO<sub>2</sub> molten phase.</div></div>\",\"PeriodicalId\":10660,\"journal\":{\"name\":\"Composites Part B: Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":12.7000,\"publicationDate\":\"2024-09-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Composites Part B: Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S135983682400667X\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part B: Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S135983682400667X","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
Ablation resistance of C/C–Hf1-xZrxC composites under an oxyacetylene flame at above 2700 °C
To the better application of C/C composites in thermal components of vehicles above 2700 °C, C/C–Hf1-xZrxC composites were prepared by CLVD, and the ablation behavior of composites was investigated. The results show that C/C–Hf0.5Zr0.5C has excellent ablation properties with linear and mass ablation rates of −0.23 μm/s and −0.31 mg/(s·cm2), respectively. ZrO2 molten phase and HfxZr1-xO2 particles are generated on the surface of C/C–Hf1-xZrxC composites during ablation. During the ablation process, defects are healed by the ZrO2 molten phase due to its mobility, which inhibits the diffusion of oxygen into the substrate. The ZrO2 molten phase is stabilized by the pinning effect of the HfxZr1-xO2 particles, which makes the ZrO2 molten phase better resistant to the scouring of the air stream. A relatively complete oxide layer is generated on the C/C–Hf0.5Zr0.5C surface, with a moderate amount of HfxZr1-xO2 exerting a pinning effect to hold the ZrO2 molten phase.
期刊介绍：
Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development.
The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.
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