Aspects of microstructure on the synergy and overall material loss of thermal spray coatings in erosion–corrosion environments

Souza, V.A.D.; Neville, Anne

doi:10.1016/j.wear.2007.01.071

Cited by 75 publications

(16 citation statements)

References 40 publications

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“…In agreement with our results, among WC-based systems, the chromium-containing coatings showed the lowest tribocorrosion rate. The tribocorrosion behavior of WC-based coatings with different microstructures was studied by Souza et al [38] in a sodium chloride solution under erosive conditions. The synergy effect of wear and corrosion was studied, and the influence of coating microhardness, toughness, and Young's modulus described in the study confirmed our observations.…”

Section: Wet Slurry Abrasion Wear Testmentioning

confidence: 99%

Comparative Study of Thermally Sprayed Coatings Under Different Types of Wear Conditions for Hard Chromium Replacement

et al. 2011

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The tribological properties of part surfaces, namely their wear resistance and friction properties, are decisive in many cases for their proper function. To improve surface properties, it is possible to create hard, wear-resistant coatings by thermal spray technologies. With these versatile coating preparation technologies, part lifetime, reliability, and safety can be improved. In this study, the tribological properties of the HVOF-sprayed coatings WC-17%Co, WC-10%Co4%Cr, WC-15% NiMoCrFeCo, Cr 3 C 2 -25%NiCr, (Ti,Mo)(C,N)-37%NiCo, NiCrSiB, and AISI 316L and the plasma-sprayed Cr 2 O 3 coating were compared with the properties of electrolytic hard chrome and surface-hardened steel. Four different wear behavior tests were performed; the abrasive wear performance of the coatings was assessed using a dry sand/ rubber wheel test according to ASTM G-65 and a wet slurry abrasion test according to ASTM G-75, the sliding wear behavior was evaluated by pin-on-disk testing according to ASTM G-99, and the erosion wear resistance was measured for three impact angles. In all tests, the HVOF-sprayed hardmetal coatings exhibited superior properties and can be recommended as a replacement for traditional surface treatments. Due to its tendency to exhibit brittle cracking, the plasma-sprayed ceramic coating Cr 2 O 3 can only be recommended for purely abrasive wear conditions. The tested HVOF-sprayed metallic coatings, NiCrSiB and AISI 316L, did not have sufficient wear resistance compared with that of traditional surface treatment and should not be used under more demanding conditions. Based on the obtained data, the application possibilities and limitations of the reported coatings were determined.

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Section: Wet Slurry Abrasion Wear Testmentioning

confidence: 99%

Comparative Study of Thermally Sprayed Coatings Under Different Types of Wear Conditions for Hard Chromium Replacement

et al. 2011

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“…Corrosion damages the material surface through an electrochemical reaction [8,9], whereas erosion involves the removal of material through a mechanical process. It has been observed that the combined effect of E-C results in material loss that occurs more rapidly than when erosion or corrosion occur independently [10][11][12]. Many studies have shown that E-C behavior depends on various variables such as the solid particle geometry (size, shape, etc.…”

Section: Introductionmentioning

confidence: 99%

Surface Modelling of Nanostructured Copper Subjected to Erosion-Corrosion

Irfan

Mukras

Al-Mufadi

et al. 2017

Metals

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Abstract:The last decade has witnessed considerable advancements in nanostructured material synthesis and property characterization. However, there still exists some deficiency in the mechanical and surface property characterization of these materials. In this paper, the erosion corrosion (E-C) behavior of nanostructured copper was studied. The nanostructured copper was produced through severe plastic deformation (SPD) by applying four passes of equal channel angular pressing (ECAP). The combined effects of the testing time, impact velocity, and concentration of erosive solid particles (i.e., sand concentration) on the E-C behavior of nanostructured copper were then examined. Based on a defined domain for the testing time, impact velocity, and sand concentration, E-C tests were performed for numerous combinations of test points via the slurry pot method. The test points were selected using the face-centered center composite design of experiments to enable visualization of the test results through surface plots. The extent of E-C on the test specimens was determined by measuring the mass loss. Polynomial regression and Kriging were used to fit surfaces to the experimental data, which were subsequently used to generate surface plots. The results showed that the E-C of nanostructured copper is best described by a quadratic function of testing time, velocity, and erosive solid particle concentration. The results also revealed that E-C increases with an increasing testing time, impact velocity, and erosive solid particle concentration. In addition, it was observed that the effect of the erosive solid particles on E-C is further intensified by an increased impact velocity.

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“…Nevertheless, corrosion is almost always involved in the slurry abrasion of such systems because the water used in most of the processes typically contains various types of corrosive species, such as chlorides and other species from the minerals being processed as well as from the processing agents [1][2][3][4]. Many researches have shown that synergistic effect can significantly increase the total materials loss under combined wear and corrosion attacks in different wear or erosion systems [1,2,[5][6][7][8][9][10][11][12][13]. In the past two decades or so, extensive researches have been dedicated to the so-called tribo-corrosion phenomena and remarkable progresses have been made in understanding the synergistic effect [14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Methodology Development for Investigation of Slurry Abrasion Corrosion by Integrating an Electrochemical Cell to a Miller Tester

2015

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Material losses in slurry handling systems constitute a significant fraction of cost in oil sands, mining, and mineral processing operations. It is thus important to better understand wear attack mechanisms and major factors affecting wear in such applications. In this work, a methodology and a testing system have been developed to study the abrasion-corrosion synergism during slurry abrasion based on a Miller test machine by incorporating a three-electrode electrochemical cell. The proposed methodology has then been validated experimentally using QT 100 steel. It has been shown that cathodic protection using such system setup is effective in suppressing the corrosion effect on the total material loss. In general, corrosion-induced enhancement on slurry abrasion loss rate increases with slurry corrosivity but inversely with sliding speed.

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Aspects of microstructure on the synergy and overall material loss of thermal spray coatings in erosion–corrosion environments

Cited by 75 publications

References 40 publications

Comparative Study of Thermally Sprayed Coatings Under Different Types of Wear Conditions for Hard Chromium Replacement

Comparative Study of Thermally Sprayed Coatings Under Different Types of Wear Conditions for Hard Chromium Replacement

Surface Modelling of Nanostructured Copper Subjected to Erosion-Corrosion

Methodology Development for Investigation of Slurry Abrasion Corrosion by Integrating an Electrochemical Cell to a Miller Tester

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