Synthesis and toughening behavior of bio-inspired nanocrystalline TiO2/polyelectrolyte nanolayered composites

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	Synthesis and toughening behavior of bio-inspired nanocrystalline TiO2/polyelectrolyte nanolayered composites
	H. F. Tan; B. Zhang; J. W. Yan; X. D. Sun; G. P. Zhang
	2014
发表期刊	Materials Research Bulletin
ISSN	0025-5408
卷号	50 页码:128-131
摘要	Bio-inspired (nanocrystalline TiO2/polyelectrolyte (PE))(4) nanolayered composites were synthesized by the layer-by-layer self-assembly and chemical bath deposition methods. The results show that the thicknesses of the TiO2 and PE layers in the as-synthesized are 41.3 nm and 9.6 nm, respectively, and the grain size of the TiO2 layer is about 5 nm. For the type I cracking, the fracture toughness (K-ic = 1.18 +/- 0.67 MPa m(1/2)) of 41.3 nm TiO2/9.6 nm PE composite is larger than that of the bulk TiO2. For the type II cracking, the crack deflection occurred in the composite. This toughening behavior was attributed to the low interfacial fracture energy and the large ratio of the crack deflection length to the crack penetration length. Our finding demonstrates that the crack deflection is an effective way to toughen the bio-inspired nanocrystalline TiO2/PE nanolayered composites. (C) 2013 Elsevier Ltd. All rights reserved.
部门归属	[tan, h. f. ; zhang, b. ; sun, x. d.] northeastern univ, key lab anisotropy & texture mat, minist educ, shenyang 110819, peoples r china. [tan, h. f. ; yan, j. w. ; zhang, g. p.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; zhang, b (reprint author), northeastern univ, key lab anisotropy & texture mat, minist educ, 3-11 wenhua rd, shenyang 110819, peoples r china. ; zhangb@atm.neu.edu.cn
关键词	Composites Multilayers Nanostructures Fracture Mechanical-properties Deformation Toughness Strength Nacre Films Mold
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72576
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. F. Tan,B. Zhang,J. W. Yan,et al. Synthesis and toughening behavior of bio-inspired nanocrystalline TiO2/polyelectrolyte nanolayered composites[J]. Materials Research Bulletin,2014,50:128-131.
APA	H. F. Tan,B. Zhang,J. W. Yan,X. D. Sun,&G. P. Zhang.(2014).Synthesis and toughening behavior of bio-inspired nanocrystalline TiO2/polyelectrolyte nanolayered composites.Materials Research Bulletin,50,128-131.
MLA	H. F. Tan,et al."Synthesis and toughening behavior of bio-inspired nanocrystalline TiO2/polyelectrolyte nanolayered composites".Materials Research Bulletin 50(2014):128-131.