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Interfacial optimization of SiC nanocomposites reinforced by SiC nanowires with high volume fraction
Ruan, Jing; Yang, Jinshan; Dong, Shaoming; Yan, Jingyi; Zhang, Xiangyu; Ding, Yusheng; Zhou, Haijun; Hu, Jianbao
2019-09-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Volume102Issue:9Pages:5033
SubtypeArticle
AbstractHigh volume fraction SiC nanowires-reinforced SiC composites (SiCNWs/SiC) were prepared by hybrid process of chemical vapor infiltration and polymer impregnation/pyrolysis in this research. SiCNWs networks are first to be made promising a high volume fraction (20vol%), and the pyrolytic carbon (PyC) interphase with 5nm is designed on SiCNWs surface to optimize the bonding condition between SiCNWs and SiC matrix. Nanoindentation shows a modulus of 494 +/- 14GPa of SiCNWs/SiC composites without interphase comparing to the one with PyC interphase of 452 +/- 13GPa. However, the 3-point bending test shows a higher strength of the composite with PyC interphase (273 +/- 32MPa) comparing with the one without interphase (240 +/- 38MPa). The fracture surface is observed under SEM, which shows a longer SiCNWs pullout of the composite with PyC interphase. The energy dissipation during the 3-point bending test is calculated by the length of nanowire pull-out, it demonstrates that the SiCNWs with PyC interphase possess better performance for toughening composite. Further characterization proves that the PyC interphase can give SiCNWs/SiC composites higher fracture toughness (4.49 +/- 0.44MPam(1/2)) than the composites without interphase (3.66 +/- 0.28MPam(1/2)).
Keywordchemical vapor infiltration nanocomposite nanoindentation transmission electron microscopy
DOI10.1111/jace.16513
Language英语
WOS Research AreaMaterials Science
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26877
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Ruan, Jing,Yang, Jinshan,Dong, Shaoming,et al. Interfacial optimization of SiC nanocomposites reinforced by SiC nanowires with high volume fraction[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019,102(9):5033.
APA Ruan, Jing.,Yang, Jinshan.,Dong, Shaoming.,Yan, Jingyi.,Zhang, Xiangyu.,...&Hu, Jianbao.(2019).Interfacial optimization of SiC nanocomposites reinforced by SiC nanowires with high volume fraction.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,102(9),5033.
MLA Ruan, Jing,et al."Interfacial optimization of SiC nanocomposites reinforced by SiC nanowires with high volume fraction".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 102.9(2019):5033.
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