Micro-scale abrasive wear of coated surfaces-prediction models

Ramalho, A.

doi:10.1016/j.surfcoat.2004.12.024

Cited by 34 publications

(25 citation statements)

References 9 publications

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“…In this experiment, the particles in the abrasive slurry that were in contact with the specimen surface continuously changed due to the rotational speed. The wear surfaces produced by rolling abrasion were characterized by a heavily deformed, multiply indented appearance, and little or no directionality [23][24][25][26]. The high impact energy and the large area of contact of the coarse particles with the surfaces might have caused the rolling abrasion.…”

Section: Analyses Of Worn Surfacesmentioning

confidence: 99%

Comparative evaluation of the abrasive slurry wear behavior of alloy surfaces produced by a Plasma Transferred Arc hardfacing process

2010

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Abrasive slurry wear is generally defined as a mechanical interaction in which the material becomes lost in a surface that is in contact with moving particles, such as laden liquid. Slurry wear abrasion occurs in extruders, slurry pumps, and pipes that carry the slurry of minerals and ores in mineral processing industries. The life of the components used under slurry abrasion conditions is governed by the process parameters, the properties of the abrasive particles in the slurry, and the material properties. This paper analyses in detail the effects of operating variables, such as abrasive particle size, slurry concentration, speed of rotation, and slurry bath temperature, on the abrasive slurry wear behavior of a iron based alloy (stainless steel), cobalt based alloy (stellite), and nickel based alloy (colmonoy) surfaces produced by a Plasma Transferred Arc (PTA) hardfacing process. Of the four variables considered in this investigation, it was found that the slurry concentration had a predominant effect on the wear rate of hardfaced surfaces compared to the other variables. Microstructural analyses of the worned surfaces were carried out using SEM. Both the experimental and mathematical investigations showed that the wear resistance of an iron based alloy was 4 times better than the base metal. Similarly, the cobalt based alloy exhibited a 3 times higher wear resistance while the nickel based alloy showed a 2 times higher wear resistance compared to the base metal (carbon steel).

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Section: Analyses Of Worn Surfacesmentioning

confidence: 99%

Comparative evaluation of the abrasive slurry wear behavior of alloy surfaces produced by a Plasma Transferred Arc hardfacing process

2010

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“…Some efforts were developed in order to formulate theoretical models to predict the wear evolution and particles motion during the test [6,14,15]. Other studies were carried out in order to correlate the particles geometry with the wear behaviour [16].…”

Section: Introductionmentioning

confidence: 99%

Influence of the abrasive particles size in the micro-abrasion wear tests of TiAlSiN thin coatings

Andrade

Martinho

Silva

et al. 2009

Wear

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Ball rotating micro-abrasion tribometers are commonly used to carry out wear tests on thin hard coat-ings. In these tests, different kinds of abrasives were used, as alumina (Al2 O3 ), silicon carbide (SiC) or diamond. In each kind of abrasive, several particle sizes can be used. Some studies were developed in order to evaluate the influence of the abrasive particle shape in the micro-abrasion process. Nevertheless, the particle size was not well correlated with the material removed amount and wear mechanisms. In this work, slurry of SiC abrasive in distilled water was used, with three different particles size. Initial sur-face topography was accessed by atomic force microscopy (AFM). Coating hardness measurements were performed with a micro-hardness tester. In order to evaluate the wear behaviour, a TiAlSiN thin hard film was used. The micro-abrasion tests were carried out with some different durations. The abrasive effect of the SiC particles was observed by scanning electron microscopy (SEM) both in the films (hard material) as in the substrate (soft material), after coating perforation. Wear grooves and removed material rate were compared and discussed.

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“…1) and the wear behavior is analyzed based on the dimensions of the crater formed during the test. This test has been applied in the study of the abrasive wear of metallic [1][2][3][4] and non-metallic [5][6][7][8][9] materials and, depending on the equipment configuration, it is possible to apply normal forces (N) from N = 0.01 N [10] to N = 5 N [11]. The test is usually conducted in one of two basic configurations [12]: (i) free-ball and (ii) fixed-ball.…”

Section: Introductionmentioning

confidence: 99%

“…The test is usually conducted in one of two basic configurations [12]: (i) free-ball and (ii) fixed-ball. In the literature [9][10][11], fixed-ball equipment usually adopts dead weight systems to apply normal forces, but Cozza [13][14][15] developed a E-mail addresses: rcamara@fei.edu.br, ronaldo.cozza@fatec.sp.gov.br fixed-ball equipment where the normal force is applied by two compact modules [16], which, in theory provide a system that is stiffer than those with dead weight loading. Analysis on the results obtained with this equipment raised a question [5] on the ability of the abrasive particles to enter between the ball and the specimen as the depth of penetration (h) of the ball gradually increases (Fig.…”

Section: Introductionmentioning

confidence: 99%

Effect of sliding distance on abrasive wear modes transition

Cozza

2015

Journal of Materials Research and Technology

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j m a t e r r e s t e c h n o l . 2 0 1 5;4(2):144-150 w w w . j m r t . c o m . b r Two-body abrasion Three-body abrasion Micro-scale abrasion a b s t r a c tThis work presents a study on the effect of sliding distance on abrasive wear modes transition in micro-abrasive wear. Ball-cratering wear tests were conducted with specimens of P20 cemented carbide (WC-Co) and M2 tool steel, balls of 52100 steel and abrasive slurry prepared with SiC particles and distilled water. Results were analyzed in terms of A g (area with grooving abrasion) and A r (area with rolling abrasion) as a function of sliding distance and pressure; they have indicated that with the increasing of sliding distance and, a consequent decreasing of pressure, there is the transition from grooving abrasion to rolling abrasion.

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Micro-scale abrasive wear of coated surfaces-prediction models

Cited by 34 publications

References 9 publications

Comparative evaluation of the abrasive slurry wear behavior of alloy surfaces produced by a Plasma Transferred Arc hardfacing process

Comparative evaluation of the abrasive slurry wear behavior of alloy surfaces produced by a Plasma Transferred Arc hardfacing process

Influence of the abrasive particles size in the micro-abrasion wear tests of TiAlSiN thin coatings

Effect of sliding distance on abrasive wear modes transition

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