Measurement of the ultimate shear strength of a metal-ceramic interface

Agrawal, D. C.; Raj, Rishi

doi:10.1016/0001-6160(89)90120-x

Cited by 340 publications

(178 citation statements)

References 6 publications

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“…Analyzing the tension stress and the interfacial shear stress under an existing oxide raft (thickness h ox ), Agrawal and Raj [7] suggest that the critical crack distance below which delamination replaces transverse fracture is :…”

Section: Critical Cracking Stress Of the Oxidementioning

confidence: 99%

“…For instance, Nagl et al [6] show how an oxide layer in a tension test first develops an increasing number of transverse cracks ; above a critical density, interfacial cracks develop, starting from transverse crack corners, leading to delamination of oxide rafts. A transition criterion is proposed is [7,4], involving layer thickness, fracture stress and interfacial toughness; it allows to measure the ultimate shear strength of the interface [7].…”

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confidence: 99%

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Mechanical behaviour of iron oxide scale: Experimental and numerical study

Picqué

Bouchard

Montmitonnet

et al. 2006

Wear

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Picqué et alMechanical behaviour of iron oxide scale 2 SummaryThe paper addresses the identification of constitutive parameters of thick, brittle layers on metal substrates. Application is to the iron oxide behaviour during hot rolling processes of steel, where oxide scale breaking and embedding is one of the major causes of surface defects. Contact management of a FEM software has been adapted in order to address the transitions corresponding to transverse oxide fracture, along with two other mechanisms, namely delamination and interfacial stick / slip. It is applied to the hot strip rolling process to show pre-bite cracking and its consequences ("microextrusion" of the metal). To approximate the stress state prevailing at roll bite entry, the four-point Hot Bending Test (4PHBT) has been selected for the measurement of oxide properties. Oxidation is made in-situ in the test rig under conditions similar to a Hot Strip Mill (HSM) environment. Comparison of load-deflection curves for oxidized and nonoxidized samples allows to determine the mechanical properties of the oxide. Above a critical temperature T c -around 700°C, but depending on strain rate -the oxide is ductile (with a very narrow plastic strain range, p < 10 -2 ), Elastic-Viscoplastic (EVP) constitutive parameters are identified numerically. Below T c , brittleness is manifested by an array of transverse, through-thickness cracks. Acoustic Emission (AE) has been used to help detect the onset of fracture, while numerical simulation gives the critical fracture stress at the corresponding point of the load-deflection curve. Results for four low carbon steel grades are compared.

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Section: Critical Cracking Stress Of the Oxidementioning

confidence: 99%

mentioning

confidence: 99%

Mechanical behaviour of iron oxide scale: Experimental and numerical study

Picqué

Bouchard

Montmitonnet

et al. 2006

Wear

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“…During the tensile tests, a low rate of deformation equal to 0.06 mm min À1 has been implemented. According to the Agrawal and Raj model [28], the maximum interfacial shearing force, s, developed for the interface between the deposit and the metal, is related to the tensile strength of the coating, s, by equation (1), where s ¼ E 3 f , with 3 f representing the stress corresponding to the beginning of cracking of the deposit. E and d are, respectively, the Young modulus and the thickness of the coating.…”

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confidence: 99%

Development of nickel–phosphorus coatings containing micro particles of talc phyllosilicates

Alexis

Gaussens

Etcheverry

et al. 2013

Materials Chemistry and Physics

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“…(Agrawal and Raj, 1988), scratch test (Bull and Berasetegui, 2006), indentation test (Li et al, 2002) and direct pull-off test (Rickerby, 1996). In the present study, T-bend test improved was conducted on the electroplated chromium coatings on steel substrates which are typical electroplated coating/metal substrate composite systems with strong adhesion and have been widely used in various industries.…”

Section: Introductionmentioning

confidence: 98%

Interface fracture behavior of electroplated coating on metal substrate under compressive strain

Zhang

et al. 2009

Journal of Materials Processing Technology

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Interface fractureCompressive strain T-bend test a b s t r a c tThe inducement of interface fracture is crucial to the analysis of interfacial adhesion between coating and substrate. For electroplated coating/metal substrate adhering materials with strong adhesion, interface cracking and coating spalling are difficult to be induced by conventional methods. In this paper an improved bending test named as T-bend test was conducted on a model coating system, i.e. electroplated chromium on a steel substrate.After the test, cross-sections of the coated materials were prepared to compare the failure behaviors under tensile strain and compressive strain induced by T-bend test. And the observation results show that coating cracking, interface cracking and partial spalling appear step by step. Based on experimental results, a new method may be proposed to rank the coated materials with strong interfacial adhesion.

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Measurement of the ultimate shear strength of a metal-ceramic interface

Cited by 340 publications

References 6 publications

Mechanical behaviour of iron oxide scale: Experimental and numerical study

Mechanical behaviour of iron oxide scale: Experimental and numerical study

Development of nickel–phosphorus coatings containing micro particles of talc phyllosilicates

Interface fracture behavior of electroplated coating on metal substrate under compressive strain

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