Microabrasion of WC–Co hardmetals in corrosive media

Gant, A.J.; Gee, M.G.; May, A.T.

doi:10.1016/j.wear.2003.09.003

Cited by 54 publications

(16 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, reinforcement particle size and volume fraction had had the opposite effect on the density (Table 2). Consequently, there was no direct correlation between hardness and wear resistance of metal matrix composites reinforced with ceramic particles, which agrees with the study of Gant et al [73].…”

Section: Hardnesssupporting

confidence: 90%

Effect of high ratio of reinforcement particle size to matrix powder size and volume fraction on microstructure, densification and tribological properties of SiCp reinforced metal matrix composites manufactured via hot pressing method

Diler

Ghiami

İpek

2015

International Journal of Refractory Metals and Hard Materials

View full text Add to dashboard Cite

Section: Hardnesssupporting

confidence: 90%

Effect of high ratio of reinforcement particle size to matrix powder size and volume fraction on microstructure, densification and tribological properties of SiCp reinforced metal matrix composites manufactured via hot pressing method

Diler

Ghiami

İpek

2015

International Journal of Refractory Metals and Hard Materials

View full text Add to dashboard Cite

“…Even under the nominally two-body condition (e.g., rubbing between two solid surfaces), the generation and entrainment of hardened wear particles can result in subsequent damage due to three-body abrasion [34]. Attempts to elucidate the three-body abrasion-corrosion behaviour have been carried out by Gant et al [35], Stack et al [36] and Bello et al [37]. These research groups used a modified micro-abrasion rig that allows simultaneous wear and electrochemical studies.…”

Section: Introductionmentioning

confidence: 99%

New Experimental Rig to Investigate Abrasive–Corrosive Characteristics of Metals in Aqueous Media

Salasi

Stachowiak

2010

Tribol Lett

View full text Add to dashboard Cite

A new tribometer to investigate a conjoint effect of three-body abrasion and corrosion has been developed. In this design, a flat wear sample is loaded against a rotating cylindrical disc counterface and the abrasive slurry is delivered to the contact interface. Capabilities of the newly developed tribometer have been assessed through conducting abrasion-corrosion tests involving simultaneous electrochemical measurements. In this work, the stability of the passive layer on stainless steel under three-body abrasive wear in a near neutral electrolyte was investigated using potentiodynamic polarization tests. 316L Stainless Steel wear samples were abraded by coarse garnet particles in an aerated sodium sulphate electrolyte. The effects of load and speed on the polarization curves and passivity of 316L steel were determined. It was found that under abrasion-corrosion conditions 316L steel became more thermodynamically active and the passive corrosion rate has increased. Increasing the contact load resulted in a small increase in the passive corrosion current, while increasing the rotating speed had the opposite effect of decreasing the current. Linear polarization resistance method was used to analyse corrosion current changes with time during abrasion-corrosion testing. The existence of three distinct stages was explained by the third-body effect on the corrosion potential and current. First stage was revealed by continuous decrease of corrosion potential. Then, the potential reached a plateau for the second and third stages. In the first and second stages, particle constraint in the contact zone plays the major role and a linear rise in corrosion current with time has been recorded. After a certain amount of surface roughening, no further increase in particles entrapment is expected. Therefore, in the third stage steady-state corrosion current values are anticipated. The rig developed can also be used to simulate two-body abrasion-corrosion. The capabilities of the new rig have been compared against other experimental set-ups used in studies of combined abrasion-corrosion behaviour.

show abstract

“…In general, recent studies of wear-corrosion performance of WC-based hardmetals have focussed in evaluating the performance of WC-based hardmetals in acidic conditions [16,18,19]. Kalish observed that the corrosion rates for WC-based hardmetals were much higher in acidic conditions than in alkaline conditions [18], nonetheless the wear rates in alkaline conditions are not insignificant [20,21] and hence cannot be ignored. Hochstrasser has reported that a stable hydroxide film forms on Co in alkaline solutions, however, increased dissolution occurred with decreasing pH [22].…”

Section: Introductionmentioning

confidence: 99%

Exposure effects of alkaline drilling fluid on the microscale abrasion–corrosion of WC-based hardmetals

Thakare

Wharton

Wood

et al. 2007

Wear

View full text Add to dashboard Cite

Microabrasion of WC–Co hardmetals in corrosive media

Cited by 54 publications

References 17 publications

Effect of high ratio of reinforcement particle size to matrix powder size and volume fraction on microstructure, densification and tribological properties of SiCp reinforced metal matrix composites manufactured via hot pressing method

Effect of high ratio of reinforcement particle size to matrix powder size and volume fraction on microstructure, densification and tribological properties of SiCp reinforced metal matrix composites manufactured via hot pressing method

New Experimental Rig to Investigate Abrasive–Corrosive Characteristics of Metals in Aqueous Media

Exposure effects of alkaline drilling fluid on the microscale abrasion–corrosion of WC-based hardmetals

Contact Info

Product

Resources

About