Effect of TiO2 nanotubes developed on pure titanium substrates on the mechanical performance of titanium-titanium single-lap adhesive joints

Ciência & Tecnologia dos Materiais Pub Date : 2016-07-01 DOI:10.1016/j.ctmat.2016.02.004

G.C. Papanicolaou, D.V. Portan, G.N. Petropoulos, L.C. Kontaxis

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引用次数: 5

Abstract

The aim of the present work is to study the combined effect of TiO₂ nanotubes, developed by means of electrochemical anodization on pure titanium adherends, and of the adhesive epoxy resin reinforced with carbon nanotubes (CNTs), on the quasi-static three-point bending behaviour of titanium-titanium single lap adhesive joints. A specific combination of parameters, namely time, type of electrolyte and voltage, has been selected in order to develop nanotubes with optimum geometry in an effort to achieve single lap adhesive joints with enhanced mechanical strength. The mechanical performance of the single lap joints as well as the bonding efficiency of the nano-composite adhesive were studied by means of three point bending and tensile shear tests, while the nano-structural topography was investigated through Scanning Electron Microscopy (SEM) observations. Following the above procedure an increase on the order of 82% in flexural strength for the thus manufactured single-lap adhesive joints was achieved, while the flexural modulus of the joints remained unaffected.

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在纯钛基体上制备TiO2纳米管对钛-钛单搭接接头力学性能的影响

本研究的目的是研究通过电化学阳极氧化法制备的TiO2纳米管和碳纳米管增强的粘合环氧树脂对钛-钛单搭接接头准静态三点弯曲行为的综合影响。选择了特定的参数组合，即时间、电解质类型和电压，以开发具有最佳几何形状的纳米管，以实现具有增强机械强度的单搭接粘合剂连接。通过三点弯曲和拉伸剪切试验研究了单搭接接头的力学性能和纳米复合胶粘剂的粘接效率，并通过扫描电镜(SEM)观察了纳米结构的形貌。按照上述步骤，制造的单搭接接头的抗弯强度提高了82%，而接头的抗弯模量不受影响。

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Ciência & Tecnologia dos Materiais

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