Development of the Scale Adhesion Assessment Using a Tensile Testing Machine Equipped with a CCD Camera

Nilsonthi, Thanasak; Issaard, Wannapha; Chandra-ambhorn, Somrerk

doi:10.1007/s11085-016-9679-z

Cited by 6 publications

(4 citation statements)

References 32 publications

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“…The displacement motion is interrupted in order to acquire images of the sample surface. Sequential micrographs of the evolution of the damage in the oxide scale are collected according to the applied strain [9,10,17,24,[28][29][30][31][32][33][34][35][36][37][38]. At the beginning of the test, the substrate and the oxide scale are elastically strained.…”

Section: Experimental Determination Of Adhesion Energymentioning

confidence: 99%

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CHAPTER 2 Mechanical Behaviour of Thermal Oxide Scales on Stainless Steels

Parry

Chandra-ambhorn

Nilsonthi

et al. 2020

SSP

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The mechanical behaviour and adhesion properties of thermal oxide scales are key issues for steel processing and long-term durability. This chapter aims at taking up the various aspects to be considered for such studies. The first part is devoted to a description of the origin of stress and stress quantification. Then, description of mechanical failure and damaging patterns of thermal oxide scales will be given. Finally, definitions of adhesion energy as well as quantitative methods to measure adhesion energy will be proposed. An appendix describing the hypotheses and the constitutive equations for plane stress analysis, which suits to oxide scales, is also given The purpose is enriched by references in particular to Alain Galerie’s co-workers’ publications.

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Section: Experimental Determination Of Adhesion Energymentioning

confidence: 99%

“…M. Dupeux and A. Galerie proposed that the evolution of the stress in the oxide during tensile testing can be described as a succession of 3 stages [9,10,17,24,[29][30][31][32][33][34][35][36][37]. This approach considers an elastic-plastic behaviour of the metallic substrate.…”

Section: Galerie-dupeux Model For the Calculation Of Adhesion Energy ...mentioning

confidence: 99%

CHAPTER 2 Mechanical Behaviour of Thermal Oxide Scales on Stainless Steels

Parry

Chandra-ambhorn

Nilsonthi

et al. 2020

SSP

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“…The adhesion of oxide scale on steel substrate can be assessed in many ways, such as the indentation test [23], the inverted blister test [24,25], the bending test [26][27][28][29] or the tensile test [30][31][32][33][34]. Our group developed the tensile test [35][36][37][38][39] to evaluate the scale adhesion of low carbon steels [15,19,22,[35][36][37][38][39] and stainless steels [40][41][42]. It will be used in this study.…”

Section: Introductionmentioning

confidence: 99%

Formation of thermal oxide scale and its adhesion to hot-rolled low carbon steels with different final strip thicknesses

et al. 2022

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Currently, the steelmaking industry produces iron oxide waste scale resulting in pollution to the environment. It was necessary to have a good understanding of the composition, characteristics and properties of the oxide scale. This study focused on the formation of scale and its adhesion to the hot-rolled steel strip with different thicknesses. The oxide scale formed on an as-received hot-rolled steel strip was investigated by X-ray diffraction (XRD), scanning electron microscopy equipped with energy dispersive X-ray (SEM-EDS). Magnetite, hematite and iron were found from the XRD results of all samples, which had the thickness strip of 8, 10 and 12 mm. The scale was thinner for the thinner strip. The adhesion test was conducted by a tensile testing machine adapted with an observation set. The strain initiating the first spallation and mechanical adhesion energy was lowest for the sample with the highest thickness (12 mm). These results indicate that the waste scale produced by hot rolled steel industry can be controlled by the final strip thickness. There was a need to control the scale of waste in a reasonable way to protect the environment.

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“…The interfacial adhesion is realized as important fundamental physics for avoiding spallation and evaluating the mechanical reliability of coatings. The quantitative assessment of adhesion can be performed by adhesion testing methods using the tensile test equipped with an optical lens (Chandra-ambhorn et al , 2017; Nilsonthi et al , 2013) and a CCD camera (Nilsonthi et al , 2017). These methods have been developed to monitor the oxide failure during straining.…”

Section: Introductionmentioning

confidence: 99%

Effects of blackening parameters on the formation and adhesion of oxide on AISI 4140 steel

Chandra-ambhorn

Srihirun

Siripongsakul

2018

ACMM

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Purpose The purpose of this study is to investigate the aesthetic blackening coating formed by a hydrothermal process, focusing on the formation of magnetite and the oxide adhesion for improving the corrosion resistance of the steel. Design/methodology/approach The aesthetic black coating was applied on AISI 4140 steel using a hydrothermal process with a non-toxic solution consisted of ferrous sulphate hydrate (FeSO4·7H2O), sodium hydroxide (NaOH) and hydrazine hydrate (N2H4·H2O). Upon process parameters temperature and time, the morphology of the coatings and oxidation kinetics were investigated by using scanning electron microscopy and X-ray diffraction (XRD) analysis. Furthermore, the samples with coatings were subjected to the adhesion test using a tensile testing machine equipped with a charge-coupled device (CCD) camera. Findings From the formation parameters due to temperature and time for the conversion coatings, it was found that the oxidation kinetics had special characteristics which were in accordance with a linear rate law and Arrhenius relation. For the samples blackened, the XRD analysis results revealed that the magnetite was successfully formed on the surface of the steel. On the other hand, increasing the blackening temperature worsened the scale adhesion as observed by the lower strain provoking the first spallation and the higher sensitivity of the oxide to spall out with the imposed strain. Originality/value The effects of parameters of the formation of conversion coatings were investigated to understand the kinetics of the coatings. Furthermore, a tensile adhesion test using a CCD camera was applied to evaluate the adhesion between the native oxide formed by conversion coating.

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Development of the Scale Adhesion Assessment Using a Tensile Testing Machine Equipped with a CCD Camera

Cited by 6 publications

References 32 publications

CHAPTER 2 Mechanical Behaviour of Thermal Oxide Scales on Stainless Steels

CHAPTER 2 Mechanical Behaviour of Thermal Oxide Scales on Stainless Steels

Formation of thermal oxide scale and its adhesion to hot-rolled low carbon steels with different final strip thicknesses

Effects of blackening parameters on the formation and adhesion of oxide on AISI 4140 steel

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