Waterjet roughened surface analysis and bond strength

Knapp, James K.; Taylor, T.A.

doi:10.1016/s0257-8972(96)02995-7

Cited by 26 publications

(10 citation statements)

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“…9 The effect of different types of cleaning and pretreatment of metallic substrates, as well as application procedures, has been thoroughly described elsewhere. 31,[149][150][151][152] The adhesion between an organic coating and a metal substrate or pigments may also be improved by means of coupling agents that create stronger interfacial interaction (covalent bonds) between the coating and the media. These coupling agents are often referred to as adhesion promoters, and their role in improving adhesion of organic coatings to metal substrates has been extensively reviewed.…”

Section: Adhesionmentioning

confidence: 99%

Anticorrosive coatings: a review

et al. 2009

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Section: Adhesionmentioning

confidence: 99%

Anticorrosive coatings: a review

et al. 2009

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“…In WJ peening, a high velocity waterjet impinges the substrate and generates a surface pressure distribution that induces localized plastic deformation (Daniewicz and Cummings, 1999;Tonshoff et al, 1995). Though WJ peening generally does not change the surface texture of the substrate (Arola et al, 2002;Colosimo et al, 2000;Ramulu et al, 2000;Salko, 1984;Wagner, 1999), an increase in roughness can arise in treating substrates with low yield strength, or under operating conditions comprised of high jet pressures and long exposure times (Colosimo et al, 2000;Daniewicz and Cummings, 1999;Hirano et al, 1996;Knapp and Taylor, 1996). Residual stresses invoked by the surface deformation are dependent on the peening conditions but are primarily compressive in nature.…”

Section: Introductionmentioning

confidence: 99%

“…Extensive work hardening of the surface has been shown to decrease the surface roughness with extended treatment times in grit blasting and WJ peening operations (Hirano et al, 1996;Knapp and Taylor, 1996;Mellali et al, 1997;Tonshoff et al, 1995;Wigren, 1987). The traverse rates used in the AWJ treatmens resulted in exposure times that were likely insufficient to reach saturation or over-hardening.…”

mentioning

confidence: 99%

Parametric Effects on Particle Deposition in Abrasive Waterjet Surface Treatments

Arola

Hall

2004

Machining Science and Technology

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The abrasive waterjet (AWJ) has primarily been used for net-shape sectioning of engineering materials. In this study an AWJ was adopted for the surface treatment of commercially pure titanium (cpTi) and the contribution of treatment parameters to material removal and the deposition of particles within the substrate were examined. The surface texture and material removal rate were analyzed using conventional techniques whereas the quantity of abrasive particles embedded within the cpTi surfaces was determined using energy dispersive X-ray analysis (EDXA). Parametric effects related to particle hardness were distinguished from a comparison of surfaces treated with Aluminum oxide, garnet, and crushed glass abrasives. According to an analysis of variance (ANOVA), treatment responses were found to be primarily dependent on the abrasive size, abrasive hardness, angle of incidence, and jet pressure. The minimum and maximum concentration of particles embedded in the AWJ treated cpTi (in percent surface area covered) was 2.5 and 21.6%, respectively. Particle concentration and mean particle size in the cpTi increased with abrasive size, angle of incidence and jet pressure; the particle concentration reached saturation at an angle of incidence near 80 . Although abrasive hardness was important to the ORDER REPRINTS treatment responses, an increase in hardness beyond 800 on the Rosiwal scale resulted in minimal changes in material removal or other features of the process.

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“…They proposed that increased adhesion strength between the coating and substrate may be a result of increased anchoring features and increased roughness. Knapp et al [11] reported the plasma sprayed MCrAlY coating-substrate bond strength as high as 70 MPa after roughening the Inconel 718 and Mar-M 509 substrates by the waterjet process. Bobzin et al [12] compared the adhesion strength between a PTWA low carbon steel coating on Al-6060 surfaces geometrically cut and high-pressure waterjet roughened.…”

Section: Introductionmentioning

confidence: 99%

Pulsed Waterjet Roughening of Cast Iron and Aluminum Alloy for Automotive Engine Remanufacturing with Plasma Transferred Wire Arc Coating

O’Neil

Kabir

2020

Coatings

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This study utilized the high-pressure pulsed waterjet process and paired it with the plasma transferred wire arc technology to develop a novel technique to remanufacture damaged engine cylinder bores. The objective of this research was to eliminate the need for expensive bond-coats such as Ni-Al by optimizing the surface roughness profile of the substrate to provide acceptable mechanical bonding between the coating and the substrate. In this study, a high chrome stainless steel wire (Metcoloy #2) was plasma spray coated on a wide range of pulsed waterjet roughened surface profiles generated on grey cast iron and cast aluminum A380 alloy, the two most common engine materials. The pulsed waterjet greatly increased the adhesion strength between the substrates and the Metcoloy #2 coating. The increase in adhesion strength is a result of the formation of favorable mechanical anchoring points. Optimal pulsed waterjet parameters were determined to avoid the production of a copious roughness profile which resulted in a coating that mirrored the roughened surface profile. Additionally, if the roughness profile produced by the pulsed waterjet was insignificant the coating was removed in its entirety during detachment-based failure.

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Waterjet roughened surface analysis and bond strength

Cited by 26 publications

References 1 publication

Anticorrosive coatings: a review

Anticorrosive coatings: a review

Parametric Effects on Particle Deposition in Abrasive Waterjet Surface Treatments

Pulsed Waterjet Roughening of Cast Iron and Aluminum Alloy for Automotive Engine Remanufacturing with Plasma Transferred Wire Arc Coating

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