Erosive–corrosive wear of aluminum alloy composites: Influence of slurry composition and speed

Das, Satyabrata; Saraswathi, Y. L.; Mondal, D.P.

doi:10.1016/j.wear.2005.09.013

Cited by 61 publications

(26 citation statements)

References 39 publications

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“…The slurry pot and jet impingement testers are the most commonly used rigs to test erosion and corrosion. A slurry pot tester is inexpensive and easy to operate [37][38][39]. A slurry pot tester was designed and fabricated to study the E-C of a variety of materials [9].…”

Section: Slurry Pot Testermentioning

confidence: 99%

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

et al. 2017

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Abstract:During the past few decades, ultrafine-grained materials (UFG) have experienced rapid development. Enhanced mechanical and surface properties, such as strength, ductility and erosioncorrosion (E-C) resistance by refining the grain to ultra-fine/nanometer size has been achieved. The equal channel angular pressing (ECAP) is a popular severe plastic deformation (SPD) method to fabricate UFG bulk materials. In this research, the E-C behavior of commercial annealed pure copper subject to four passes of ECAP have been investigated. Hardness measurement of the copper specimen after four passes of ECAP showed an increase of 200% on the hardness value as compared with annealed condition. Simulated seawater was used as an E-C medium. The effect of different E-C parameters such as time, slurry flow velocity, impact angle, and solid particle concentration on ECAP process is studied. The results showed that ECAP enhances the E-C resistance of copper, and this behavior improves with increasing the pass number. Generally, a 30% rise in resistance to E-C was achieved after four ECAP passes as compared to coarse grain copper for the parameters studied in this work. Optical microscopy was used to examine the microstructure and material removal mechanism of the annealed copper. Scanning electron microscopy (SEM) was used to validate the reduction of grain size due to ECAP process. Furthermore, examination of the surface roughness of the copper at different ECAP passes showed that for the same E-C condition the increment of ECAP passes leads to a smoother surface.

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Section: Slurry Pot Testermentioning

confidence: 99%

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

et al. 2017

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“…It has been observed that erosion is the dominant mode of material removal in these two media. 6 Hardfacing is primarily carried out to enhance the surface properties of the base metal (substrate) and hardfacing materials generally exhibit better wear, corrosion and oxidation resistance compared to the base metal. At a higher percentage of dilution, the surface properties are not enhanced to the expected level because of the presence of a higher amount of base metal.…”

Section: Introductionmentioning

confidence: 99%

Effect of slurry concentration, abrasive particle size and velocity on wear behaviour of nickel based (Colmonoy) plasma transferred arc hardfaced surface

Ramachandran

Balasubramanian

Varahamoorthy

et al. 2009

Surface Engineering

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Wear by slurry abrasion occurs in extruders, slurry pumps and pipes carrying slurry of minerals and ores in mineral processing industries. The wear life of components used under slurry abrasion conditions is governed by process parameters, properties of abrasive particles in slurry and material properties. In this paper, the effect of operating variables such as abrasive particle size, slurry concentration, speed of rotation and slurry bath temperature on abrasive slurry wear behaviour of nickel based alloy (Colmonoy) surface produced by PTA hardfacing process has been analysed in detail. From this investigation, it is found that the wear resistance of Colmonoy hardfaced surface is two times better than the substrate (carbon steel).

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“…This improvement in the corrosion resistance of all MMCs may be due to a good connection of the matrix with the reinforcement particles. In addition, the pH value of NaCl solution is 7.5, and it is observed from the pH-potential-Pourbaix diagram of aluminum that aluminum passivates in the pH range of 4.0-8.0 by the rapid formation of aluminum oxide film [31,32]. Moreover, Si particles as well as Al 2 O 3 particles have poor conductivity and cannot act as a cathode of corrosion reaction [16,22,33].…”

Section: Immersion Testmentioning

confidence: 99%

Wear and Corrosion Behavior of Al–Si Matrix Composite Reinforced with Alumina

2015

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Al-Si alloy matrix composites reinforced with different weight fractions of Al 2 O 3 particles up to 25 wt% were fabricated by stir casting method. The effect of weight fraction of Al 2 O 3 and heat treatment on the wear behavior of Al-Si alloy and its composites was investigated. The results showed that wear resistance of the investigated composites was improved by heat treatment and Al 2 O 3 particles addition. The effect of heat treatment on the corrosion behavior of composites compared with its matrix in 3.5 % NaCl at 600 rpm using electrochemical potentiodynamic polarization test was also investigated. The corrosion resistance of the composites with 10, 15, and 20 % Al 2 O 3 particles was higher than that of the matrix alloy. Heat treatment of Al-Si alloy and its composites resulted in marked improvements in the corrosion resistance as compared with these materials in the as-cast condition.

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Erosive–corrosive wear of aluminum alloy composites: Influence of slurry composition and speed

Cited by 61 publications

References 39 publications

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

Effect of slurry concentration, abrasive particle size and velocity on wear behaviour of nickel based (Colmonoy) plasma transferred arc hardfaced surface

Wear and Corrosion Behavior of Al–Si Matrix Composite Reinforced with Alumina

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