碳化硅纤维表面热解碳涂层转化TiC-Ti2AlC的行为研究
PDF下载 (226)王宇槐,李 朋,黄 庆.碳化硅纤维表面热解碳涂层转化TiC-Ti2AlC的行为研究[J].宁波大学学报(理工版),2025,38(2):102-108.DOI:10.20098/j.cnki.1001-5132.2024.0722
WANG Yuhuai,LI Peng,HUANG Qing.Investigation on the behavior of PyC deriving TiC-Ti2AlC coating on the surface of silicon carbide fibers[J].Journal of Ningbo University(Natural Science & Engineering Edition),2025,38(2):102-108.DOI:10.20098/j.cnki.1001-5132.2024.0722
| Title: | Investigation on the behavior of PyC deriving TiC-Ti2AlC coating on the surface of silicon carbide fibers |
| 作者: | 王宇槐, 李 朋, 黄 庆 |
| Author(s): | WANG Yuhuai, LI Peng, HUANG Qing |
| 关键词: | 碳化硅纤维; 界面层; 化学气相沉积; 热解碳 |
| Keywords: | TiC-Ti2AlC; silicon carbide fiber; interface; chemical vapor deposition; pyrolytic carbon |
| 分类号: | TQ343+.6 |
| DOI: | 10.20098/j.cnki.1001-5132.2024.0722 |
| 文献标识码: | A |
| 摘要: | 界面层对于碳化硅纤维增强碳化硅陶瓷基复合材料性能具有重要影响. 为此, 采用化学气相沉积工艺, 在碳化硅纤维表面制备热解碳(PyC)涂层作为反应源, 通过熔盐化学原位反应将PyC转化为TiC-Ti2AlC涂层. 通过对物相、微观结构以及形貌表征分析发现: TiC在TiC-Ti2AlC涂层中以较大层状晶粒与纤维基底相连, 而Ti2AlC以较小晶粒分散于TiC层. 进一步研究表明: PyC涂层厚度对其向TiC-Ti2AlC转化有重要影响, 因而可调节TiC-Ti2AlC与纤维的结合强度. |
| Abstract: | The interface layer has an important effect on the properties of SiC fiber reinforced SiC matrix ceramic composites. In this study, PyC coating was prepared on the surface of SiC fiber by chemical vapor deposition process. Then PyC was converted into TiC-Ti2AlC coating by in-situ reaction in molten salt. Through the characterization and analysis of the phase composition, microstructure and morphology of the reaction products, it is found that the TiC in the TiC-Ti2AlC coating is bonded with the fiber with large layered grains, while the Ti2AlC is dispersed in the TiC layer with small grains. Further study showed that the coating thickness of PyC has important effects on the conversion behavior, thus could be used to regulate the bonding strength of TiC-Ti2AlC and fiber. |
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| 备注/Memo: | 收稿日期: 2024−07−21. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 浙江省重点研发计划（2022C01236）; 浙江省领军型创新创业团队项目（2019R01003）; 浙江省万人杰出项目（2022R51007）. 第一作者: 王宇槐, 硕士研究生, 主要研究方向: 复合材料界面层的优化设计与调控. E-mail: m15616298834@163.com *通信作者: 黄庆, 研究员, 主要研究方向: 极端环境能源材料的开发与应用. E-mail: huangqing@nimt.ac.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
