Preparation and microstructure of Fe3Al/Al2O3 composites reinforced by surface modified carbon fiber

doi:10.13801/j.cnki.fhclxb.20181213.002

	Preparation and microstructure of Fe3Al/Al2O3 composites reinforced by surface modified carbon fiber
	Jia, Jiangang; Liu, Chang; Liu, Diqiang; Gao, Changqi; Ji, Genshun
刊名	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
	2019-09-01
卷号	36 期号:9 页码:2155-2162
关键词	Alumina Aluminum oxide Bending strength Binary alloys Carbon fibers Ceramic matrix composites Coatings Fiber bonding Fracture mechanics Hot pressing Microstructure Silicon Silicon carbide Sintering Sol-gel process Sol-gels Al2O3 Failure mechanism Fe3Al High flexural strength Homogeneous microstructure Hot-pressing process Progressive failure Short carbon fibers
ISSN号	10003851
DOI	10.13801/j.cnki.fhclxb.20181213.002
英文摘要	The short carbon fiber (CFs)/Fe3Al-Al2O3 composites were prepared by a sol-gel dispersing method and a subsequent hot-pressing process. The Cu coating and SiC coating applied to CFs were fabricated by electrochemistry and in-situ reaction method, respectively. The effects of Cu coating and SiC coating applied to carbon fiber on the microstructure, phase composition, mechanical properties and fracture behavior of CFs/Fe3Al-Al2O3 composites were investigated. The results show that the CFs/Fe3Al-Al2O3 composites fabricated from the as-received CFs exhibit low density and the flexural strength is only 239.0 MPa comparable with matrix due to the CFs severely eroded in Fe3Al-Al2O3 matrix. The Cu coating applied to CFs can effectively protect CFs eroded by matrix, improve sintering compactness and cause strong bonding between the fiber and matrix that cause high flexural strength, however, the length of fibers extending from the matrix is short during the fracture process. The CFs/Fe3Al-Al2O3 composites fabricated from SiC coating exhibite homogeneous microstructure, the coating onto fiber is integrated and soft bondings between fiber and matrix result in the fiber with SiC coating extending from matrix or SiC coating remained in the pull-out holes. The weak interaction between the fiber with SiC coating and matrix greatly promotes fiber debonding and extending from matrix to promote toughening and progressive failure mechanisms in the CFs/Fe3Al-Al2O3 composites. © 2019, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
语种	中文
出版者	Beijing University of Aeronautics and Astronautics (BUAA)
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113867]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Jia, Jiangang,Liu, Chang,Liu, Diqiang,et al. Preparation and microstructure of Fe3Al/Al2O3 composites reinforced by surface modified carbon fiber[J]. Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica,2019,36(9):2155-2162.
APA	Jia, Jiangang,Liu, Chang,Liu, Diqiang,Gao, Changqi,&Ji, Genshun.(2019).Preparation and microstructure of Fe3Al/Al2O3 composites reinforced by surface modified carbon fiber.Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica,36(9),2155-2162.
MLA	Jia, Jiangang,et al."Preparation and microstructure of Fe3Al/Al2O3 composites reinforced by surface modified carbon fiber".Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica 36.9(2019):2155-2162.