Rapid surface treatment of grey cast iron for reduction of friction and wear by alumina coating using gas tunnel plasma spray

Halim, Zulhelmi Alif Abdul; Ahmad, Norhayati; Hanapi, M. Faeez; Zainal, MN Firdaus

doi:10.1016/j.matchemphys.2020.124134

Cited by 7 publications

(5 citation statements)

References 24 publications

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“…Meanwhile, distinct CoF fluctuations can be observed between uncoated and coated samples, with the uncoated MS exhibiting an increase in CoF during running-in due to smoothening of surface asperities before reaching steady-state [11]. In contrast, the coated MS had an unstable CoF during running-in, indicating possible coating wear or damage and resulting in CoF fluctuations [12]. The average CoF values measured during steady-state state, as plotted in Figure 4(c), show that the CoF values for the coated sample are lower and more stable, ranging from 0.084 to 0.077, compared to the pristine MS sample, which ranges from 0.1 to 0.08.…”

Section: Resultsmentioning

confidence: 99%

Characterisation of thin α-Al₂O₃ tribo-coating deposited by low-power gas tunnel plasma spray

Halim

Ahmad

2023

Materials Science and Technology

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This study used a unique, low-power (2.8 kW) gas tunnel plasma spray and γ-Al2O3 feedstock powder to deposit a thin Al2O3 coating (<2 µm) on mild steel substrate. By optimising the plasma gas flow rate, powder feed rate, spraying time, and distance, a dense and homogeneous Al2O3 coating was obtained at a very high deposition rate (150 nm/s). During plasma coating, the high energy density plasma transforms the γ-Al2O3 powder into a highly crystalline α-Al2O3 as the predominant microstructure of the coating. The performance of the Al2O3 coating on mild steel was then evaluated preliminary using a linear sliding wear test against a chrome-steel ball, with the results indicating an 18–26% reduction in wear when compared to the uncoated substrate.

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Section: Resultsmentioning

confidence: 99%

Characterisation of thin α-Al₂O₃ tribo-coating deposited by low-power gas tunnel plasma spray

Halim

Ahmad

2023

Materials Science and Technology

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“…When the mass fraction of graphene is 0.5%, the wear rate decreases by about 26%, which can effectively delay the corrosion and erosion of metal substrates with seawater and inhibit the serious damage to marine materials. Zulhelmia [66] showed the alumina coating can reduce the COF value and wear amount of the GCI substrate by at least 10% and 50%, respectively. Liyuan Xiao et al [67] found that through the study of chemical changes in Al-Zn corrosion in the marine environment, Al-Zn coatings can generate a protective film of Al 2 O 3 with good corrosion resistance during the corrosion process, forming a thick and dense layer of insoluble corrosion products, which reduces the diffusion of corrosive substances into the coating and inhibits the further occurrence of corrosion.…”

Section: Thermal Spraying Technologymentioning

confidence: 99%

Surface Protection Technology for Metallic Materials in Marine Environments

Xu,

Lu,

Cai

et al. 2023

Materials

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As the demand for the development and utilization of marine resources continues to strengthen, the service requirements for advanced marine equipment are rapidly increasing. Surface protection technology has become an important way of solving the tribological problems of extreme operating conditions and improving the safety performance of equipment by imparting certain special properties to the surface of the material through physical, chemical or mechanical processes to enhance the ability of the material to withstand external environmental factors. Combined with the extremely complex characteristics of the marine environment, this paper describes the commonly used surface protection technologies for metal materials in the marine environment. Research on surface texture was summarized under different surface reshaping technologies, as well as processes and coating materials under different surface modification technologies. Combined with the existing research progress and development trends of marine metallic materials, the surfaces of metal materials under the marine environment protection technology foreground are prospected and provide a reference for the improvement of equipment performance in extreme marine environments.

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“…The ball on disc sliding wear test was used to investigate the tribological behaviour of the alumina coating. The alumina coating was shown to reduce the COF value and wear mass loss of the GCI substrate by at least ten percent and fifty percent, respectively [4]. Wear and scratch tests revealed that EN 36C steel coated with 75: 25 YSZ-Al2O3 exhibits superior wear and scratch resistance when compared to the other materials [5].…”

Section: Introductionmentioning

confidence: 96%

Tribological Characteristics of GCI‐EN31 Steel Surface Contact with Dry Sliding Condition

Ananth¹,

Sivaprakasam

Prakash

et al. 2022

Journal of Nanomaterials

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Grey cast iron (GCI) and steel contact surface application is an inevitable component and provides good wear resistance in several applications, not only in automobiles. Grey cast iron consists of a predominantly pearlitic/ferrite matrix or both with graphite flakes. The majority of previous research works were based on three different types of wear regimes. The wear regimes enumerate the wear track morphology, wear rate, and COF of the respective application. In this research work, dry sliding wear properties of GCI and EN31 pins were examined with different sliding parameters using pin on disc wear test. The weight loss, coefficient of frictions, and surface morphology were considered for experimental analysis. Due to the transfer of wear debris from the GCI disc, the counter steel pin surface experienced a progressive reduction in wear with increasing speed and load. With 30 N and 45 N contact loads and sliding speeds up to 1 m/sec, the GCI shows marginally positive wear. The surface textures were analyzed with the help of SEM and a surface roughness tester.

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Rapid surface treatment of grey cast iron for reduction of friction and wear by alumina coating using gas tunnel plasma spray

Cited by 7 publications

References 24 publications

Characterisation of thin α-Al₂O₃ tribo-coating deposited by low-power gas tunnel plasma spray

Characterisation of thin α-Al₂O₃ tribo-coating deposited by low-power gas tunnel plasma spray

Surface Protection Technology for Metallic Materials in Marine Environments

Tribological Characteristics of GCI‐EN31 Steel Surface Contact with Dry Sliding Condition

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Rapid surface treatment of grey cast iron for reduction of friction and wear by alumina coating using gas tunnel plasma spray

Cited by 7 publications

References 24 publications

Characterisation of thin α-Al2O3 tribo-coating deposited by low-power gas tunnel plasma spray

Characterisation of thin α-Al2O3 tribo-coating deposited by low-power gas tunnel plasma spray

Surface Protection Technology for Metallic Materials in Marine Environments

Tribological Characteristics of GCI‐EN31 Steel Surface Contact with Dry Sliding Condition

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Characterisation of thin α-Al₂O₃ tribo-coating deposited by low-power gas tunnel plasma spray

Characterisation of thin α-Al₂O₃ tribo-coating deposited by low-power gas tunnel plasma spray