Microstructures and mechanical performance of polyelectrolyte/nanocrystalline TiO2 nanolayered composites

doi:10.1186/1556-276X-8-44

IMR OpenIR

	Microstructures and mechanical performance of polyelectrolyte/nanocrystalline TiO2 nanolayered composites
	Zhang,Bin 1; Tan,Hai-Feng 1,2; Yan,Jia-Wei 2; Zhang,Ming-Dong 1; Sun,Xu-Dong 1; Zhang,Guang-Ping 2
通讯作者	Zhang,Bin(zhangb@atm.neu.edu.cn) ; Zhang,Guang-Ping(gpzhang@imr.ac.cn)
	2013-01-21
发表期刊	Nanoscale Research Letters
ISSN	1556-276X
卷号	8 期号:1
摘要	AbstractBiological materials with hierarchically laminated structures usually exhibit a good synergy between strength and fracture toughness. Here, we show that a bio-inspired (polyelectrolyte (PE)/TiO2)4 nanolayered composite with a thickness ratio of TiO2 and amorphous PE layers of about 1.1 has been prepared successfully on Si substrates by layer-by-layer self-assembly and chemical bath deposition methods. Microstructures of the nanolayered composite were investigated by scanning electron microscopy, secondary ion mass spectroscopy, and high-resolution transmission microscopy. Mechanical performance of the composite was characterized by instrumented indentation. The composite consisting of 17.9-nm-thick nanocrystalline TiO2 and 16.4-nm-thick amorphous PE layers has a strength of about 245 MPa, which is close to that of shells, while the fracture toughness of the composite, KIC?=?1.62?±?0.30 MPa?·?m1/2, is evidently higher than that of the bulk TiO2. A possible strategy to build the composite at nanoscale for high mechanical performance was addressed.
关键词	Bio-inspired nanolayered composite Layer-by-layer self-assembly Chemical bath deposition Mechanical property
DOI	10.1186/1556-276X-8-44
语种	英语
WOS记录号	BMC:10.1186/1556-276X-8-44
出版者	Springer New York
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80533
通讯作者	Zhang,Bin; Zhang,Guang-Ping
作者单位	1.Northeastern University; Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education) 2.Chinese Academy of Sciences; Shenyang National Laboratory for Materials Science, Institute of Metal Research
推荐引用方式 GB/T 7714	Zhang,Bin,Tan,Hai-Feng,Yan,Jia-Wei,et al. Microstructures and mechanical performance of polyelectrolyte/nanocrystalline TiO2 nanolayered composites[J]. Nanoscale Research Letters,2013,8(1).
APA	Zhang,Bin,Tan,Hai-Feng,Yan,Jia-Wei,Zhang,Ming-Dong,Sun,Xu-Dong,&Zhang,Guang-Ping.(2013).Microstructures and mechanical performance of polyelectrolyte/nanocrystalline TiO2 nanolayered composites.Nanoscale Research Letters,8(1).
MLA	Zhang,Bin,et al."Microstructures and mechanical performance of polyelectrolyte/nanocrystalline TiO2 nanolayered composites".Nanoscale Research Letters 8.1(2013).