Liquid Phase Vaporization TG-CVI Method Prepared C/C Composites: Microstructure and Properties

doi:10.11896/cldb.18110188

	Liquid Phase Vaporization TG-CVI Method Prepared C/C Composites: Microstructure and Properties
	Ji, Genshun1,2 ; Chen, Xiaolong 1,2; Jia, Jiangang1,2 ; Li, Xiaolong 1; Gong, Jingbo 1; Hao, Xiangzhong 3
	2020-01-25
发表期刊	Cailiao Daobao/Materials Reports
ISSN	1005023X
卷号	34 期号:1 页码:02029-02033
摘要	For the sake of improving the densification rate of C/C composites, a reaction device combining precursor evaporation and pyrolytic carbon deposition was designed, taking cyclohexane as the carbon source precursor and carbon felt as the preform. Rapid preparation of the C/C composites was implemented by liquid phase vaporization TG-CVI and followed by heat treatment on the C/C composites at 2 000 for 2 h. Polarized light microscopy (PLM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were employed to characterize the microstructure, fracture morphology, phase structure and crystallization degree of the C/C composites. Further, the bending strength of the C/C composites was measured by universal testing machine. According to the results, the annular preform with initial density of 0.14 g/cm3 can attain the average density of 1.65 g/cm3 after 20 h long experience under 1 000 and 20 kPa. A 0.075 5 g•cm-3•h-1 densification rate of liquid phase vaporization TG-CVI was achieved, which was nearly an order of magnitude higher than that of conventional ICVI. Rough layer carbon pyrolytic constituted the structure of the C/C composites, and the C/C composites presented a bending strength of about 63.24 MPa, and pseudo-plastic fracture. Undergoing heat treatment at 2 000 for 2 h, there were a phenomenal narrowing in the C(002) plane space, a converting of crystallites structure from chaotic graphite to ideal graphite crystal, and a considerable degree of graphitization in the C/C composites. © 2020, Materials Review Magazine. All right reserved.
关键词	Bending strength Crystal structure Crystallites Fracture Fracture toughness Graphite Graphitization Heat treatment Liquids Morphology Phase structure Preforming Scanning electron microscopy Vaporization C/C composites Densification rate Fracture morphology High temperature heat treatment Microstructure and properties Pseudo plastic fracture Pyrolytic carbon Universal testing machines
DOI	10.11896/cldb.18110188
收录类别	EI
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
EI入藏号	20201208333943
EI主题词	Carbon carbon composites
EI分类号	415.4 Structural Materials Other Than Metal, Plastics or Wood - 537.1 Heat Treatment Processes - 802.2 Chemical Reactions - 802.3 Chemical Operations - 933 Solid State Physics - 951 Materials Science
来源库	Compendex
分类代码	415.4 Structural Materials Other Than Metal, Plastics or Wood - 537.1 Heat Treatment Processes - 802.2 Chemical Reactions - 802.3 Chemical Operations - 933 Solid State Physics - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/115370
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Baiyin Research Institute of Novel Materials, Lanzhou University of Technology, Baiyin; 730900, China; 3.Technology Center of Gansu Haoshi Carbon Fiber Co.Ltd, Lanzhou; 730010, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Ji, Genshun,Chen, Xiaolong,Jia, Jiangang,et al. Liquid Phase Vaporization TG-CVI Method Prepared C/C Composites: Microstructure and Properties[J]. Cailiao Daobao/Materials Reports,2020,34(1):02029-02033.
APA	Ji, Genshun,Chen, Xiaolong,Jia, Jiangang,Li, Xiaolong,Gong, Jingbo,&Hao, Xiangzhong.(2020).Liquid Phase Vaporization TG-CVI Method Prepared C/C Composites: Microstructure and Properties.Cailiao Daobao/Materials Reports,34(1),02029-02033.
MLA	Ji, Genshun,et al."Liquid Phase Vaporization TG-CVI Method Prepared C/C Composites: Microstructure and Properties".Cailiao Daobao/Materials Reports 34.1(2020):02029-02033.