Determination of elastoplastic properties of TiO2 thin films deposited on dual phase stainless steel using nanoindentation tests

Breuils, Jacques; Pelletier, Hervé; Krier, Joël; Vignal, V.

doi:10.1016/j.surfcoat.2009.08.043

Cited by 10 publications

(5 citation statements)

References 21 publications

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“…In recent years, considerable progress has been made in the investigation of different mechanical properties of thin films on a substrate mainly due to new methodologies such as nanoindentation in micromechanics …”

Section: Definition Of Young's Modulus From Nanoindentation Testmentioning

confidence: 99%

“…Cross‐section of PE/TiO 2 composite film with a TiO 2 layer of 100 nm thickness and a PE‐layer of nominal thickness of (a) 5 nm, (b) 10 nm with the marked mineral bridges, and (c) 20 nm . Reprint with permission from ref …”

Section: Determination Of Young's Modulus Of Bio‐inspired Tio2/pe Nanmentioning

confidence: 99%

“…Experimentally obtained dependence of Young's modulus on different thickness ratios of oxide and polyelectrolyte layers . Reprint with permission from ref …”

Section: Determination Of Young's Modulus Of Bio‐inspired Tio2/pe Nanmentioning

confidence: 99%

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Simulation of Mechanical Properties of Bio‐Inspired TiO₂/PE Nanocomposites

Ласко¹,

Burghard²,

Schäfer³

et al. 2013

Adv Eng Mater

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The extraordinary combination of strength and toughness attained by nature's highly sophisticated structural design in nacre has inspired the synthesis of novel layered nanomaterials. In the present work, numerical and analytical models are applied on the nanometer scale to attain a better insight and understanding concerning the mechanical behavior of bio-inspired layered materials. The material is composed of the oxide TiO 2 and organic polyelectrolyte (PE) layers. The efforts focus on applying continuum mechanics in nanoscale numerical models to the layered TiO 2 /PE system, obtained by a chemical bath deposition (CBD) procedure at low temperatures. Based on previous experimental investigations, Finite-Element (FE) simulations of the mechanical behavior of the layered ceramic and organic phases (TiO 2 -PE) are performed. The elastic-plastic properties of titania and organic polyelectrolyte phases are determined via FE

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Section: Definition Of Young's Modulus From Nanoindentation Testmentioning

confidence: 99%

Section: Determination Of Young's Modulus Of Bio‐inspired Tio2/pe Nanmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of Mechanical Properties of Bio‐Inspired TiO₂/PE Nanocomposites

Ласко¹,

Burghard²,

Schäfer³

et al. 2013

Adv Eng Mater

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“…To the best of our knowledge, the behavior of granular porous TiO 2 films under indentation has not been carefully studied so far. There are few reports on the nanomechanical properties of TiO 2 thin films , . Nanoindentation provides reliable data for thin films and has been successfully employed for a number of films including carbon nitride and Cu , Sn and Ni−Sn , and nanocrystalline Ni .…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical Properties of TiO₂ Granular Thin Films

Yaghoubi

Taghavinia

Alamdari

et al. 2010

ACS Appl. Mater. Interfaces

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Post-deposition annealing effects on nanomechanical properties of granular TiO 2 films on soda-lime glass substrates were studied. In particular, the effects of Na diffusion on the films' mechanical properties were examined. TiO 2 photocatalyst films, 330 nm thick, were prepared by dip-coating using a TiO 2 sol, and were annealed between 100°C and 500°C. Film's morphology, physical and nanomechanical properties were characterized by atomic force microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, differential thermo-gravimetric analysis, and nanoindentation. Contrary to expectations, the maximum film hardness was achieved for 300°C annealing, with a value of 0.69 ( 0.05 GPa. Higher annealing temperatures resulted in inferior mechanical properties. No pile-up or sink-in effects were observed with minimal creep for the 300°C annealed sample. Considerable decrease in the amount of chemisorbed water was found with increasing annealing temperature, causing gel films densification, explaining the increasing trend of hardness with annealing temperature between 100°C and 300°C. DTA/TGA results also confirmed the weight loss and the endothermic reaction due to desorption of chemisorbed water. Decrease in hardness above 300°C annealing is attributed to thermal diffusion of Na ions from the glass substrate, confirmed by nanoindentation tests on TiO 2 films deposited on fused quartz, which did not exhibit hardness decrease after 300°C annealing.

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“…For example, ultrasonic technique only measures the Young's modulus of film materials. In comparison, nanoindenter is a powerful tool that can measure several mechanical properties of film materials, 10–15 including (at least) Young's modulus, hardness, frictional coefficient, wearing properties, and fracture properties. Therefore, the nanoindenter has been more utilized to characterize the mechanical behaviors of film materials in a wide range of categories.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Investigation on Young's Modulus Measurement of Cantilever Beam by Integrating Nanoindenter with Optical System

Hsu

Chih

Chao

et al. 2012

Experimental Techniques

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Nanoindenter has been used to directly indent on the cantilever beam to measure Young's modulus such that the substrate effects can be avoided. However, the deflections of cantilever beam are indirectly extracted from the displacement of nanoindenter and therefore their measurement results are easily influenced by local behaviors around the indentation. In this paper, to the authors' best knowledge, this is the first time that the nanoindenter is integrated with an optical system to measure Young's modulus of cantilever beam. The deflection of cantilever beam is directly measured from a specially designed optical system. The influences of substrate effects and local behaviors around indentation are simultaneously avoided from the proposed methodology.

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Determination of elastoplastic properties of TiO2 thin films deposited on dual phase stainless steel using nanoindentation tests

Cited by 10 publications

References 21 publications

Simulation of Mechanical Properties of Bio‐Inspired TiO₂/PE Nanocomposites

Simulation of Mechanical Properties of Bio‐Inspired TiO₂/PE Nanocomposites

Nanomechanical Properties of TiO₂ Granular Thin Films

Preliminary Investigation on Young's Modulus Measurement of Cantilever Beam by Integrating Nanoindenter with Optical System

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Determination of elastoplastic properties of TiO2 thin films deposited on dual phase stainless steel using nanoindentation tests

Cited by 10 publications

References 21 publications

Simulation of Mechanical Properties of Bio‐Inspired TiO2/PE Nanocomposites

Simulation of Mechanical Properties of Bio‐Inspired TiO2/PE Nanocomposites

Nanomechanical Properties of TiO2 Granular Thin Films

Preliminary Investigation on Young's Modulus Measurement of Cantilever Beam by Integrating Nanoindenter with Optical System

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Product

Resources

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Simulation of Mechanical Properties of Bio‐Inspired TiO₂/PE Nanocomposites

Simulation of Mechanical Properties of Bio‐Inspired TiO₂/PE Nanocomposites

Nanomechanical Properties of TiO₂ Granular Thin Films