The effect of residual stress on the electrochemical corrosion behavior of Fe-based amorphous coatings in chloride-containing solutions

Wang, Yuefang; Li, K. Y.; Scenini, Fabio; Jiao, Jin; Qu, Shoujiang; Luo, Qiang; Shen, Jun

doi:10.1016/j.surfcoat.2016.05.034

Cited by 59 publications

(14 citation statements)

References 42 publications

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“…Therefore, unmelted or semimelted powders impacting on the substrate or a previous lay can lead to great shot stress to induce the compressive residual stress in a coating [11,15]. Generally, the compressive residual stress is rewarding to service life, fatigue resistance, and wear resistance [16,17]. However, shot stress created by Fe-based powders is limited due to their relatively low melting points.…”

Section: Introductionmentioning

confidence: 99%

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Synchronous Shot Peening Applied on HVOF for Improvement on Wear Resistance of Fe-based Amorphous Coating

et al. 2020

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Shot peening was used synchronously to improve Fe-based amorphous coating performance by delivering ZrO2 ceramic particles into a low-temperature region of a flame during the high velocity oxygen flame (HVOF) spray process. The coating became denser, and its hardness became higher via the new process. Moreover, the compressive residual stress was induced by shot peening. The results from the dry friction test indicated that the coating’s wear resistance was enhanced obviously. The wear mechanism of coatings with and without shot peening is an abrasive wear combined with an oxidation wear at wear test conditions of a low load and a low frequency. The coating with the best wear resistance did not have the strongest microhardness but had the highest compressive residual stress. The compressive residual stress had a significant positive influence on the wear resistance at a low frequency, while its effect is weakened at a high frequency.

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Section: Introductionmentioning

confidence: 99%

“…However, shot stress created by Fe-based powders is limited due to their relatively low melting points. Some literature focused on the effects of residual stress in coatings [14,16,18,19], but it is difficult to find an effective way to improve it.…”

Section: Introductionmentioning

confidence: 99%

Synchronous Shot Peening Applied on HVOF for Improvement on Wear Resistance of Fe-based Amorphous Coating

et al. 2020

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“…A good characterization and understanding of wear mechanisms with increased temperature are substantially meaningful to design the practical application of amorphous coatings. In this article, a cost-effective Fe 59 Cr 12 Nb 5 B 20 Si 4 alloy was chosen and manufactured to prepare amorphous coatings by the HVOF spraying process. The microstructure characteristic of the coatings obtained under different spraying parameters were investigated.…”

Section: Introductionmentioning

confidence: 99%

“…The thermal conductivity and associated wear behavior at varied temperatures were detected and the potential of amorphous coatings as MBTBCs was evaluated. 59 Cr 12 Nb 5 B 20 Si 4 powder was prepared by high-pressure gas atomization method from industrial grade materials including pure Cr (≥99.1 wt %), Fe (≥99.1 wt %), as well as pre-alloy Fe-Nb (Nb: 65 wt %), Fe-B (B: 19 wt %) and Fe-Si (Si: 75 wt %). The as-atomized powders were sieved to a fraction of 20-45 µm for spraying on commercial AISI 4032 aluminum substrate.…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductivity and Wear Behavior of HVOF-Sprayed Fe-Based Amorphous Coatings

et al. 2017

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Abstract:To protect aluminum parts in vehicle engines, metal-based thermal barrier coatings in the form of Fe 59 Cr 12 Nb 5 B 20 Si 4 amorphous coatings were prepared by high velocity oxygen fuel (HVOF) spraying under two different conditions. The microstructure, thermal transport behavior, and wear behavior of the coatings were characterized simultaneously. As a result, this alloy shows high process robustness during spraying. Both Fe-based coatings present dense, layered structure with porosities below 0.9%. Due to higher amorphous phase content, the coating H-1 exhibits a relatively low thermal conductivity, reaching 2.66 W/(m·K), two times lower than the reference stainless steel coating (5.85 W/(m·K)), indicating a good thermal barrier property. Meanwhile, the thermal diffusivity of amorphous coatings display a limited increase with temperature up to 500 • C, which guarantees a steady and wide usage on aluminum alloy. Furthermore, the amorphous coating shows better wear resistance compared to high carbon martensitic GCr15 steel at different temperatures. The increased temperature accelerating the tribological reaction, leads to the friction coefficient and wear rate of coating increasing at 200 • C and decreasing at 400 • C.

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“…Fe-based amorphous/nanocrystalline coatings prepared by thermal spraying have been widely adopted by hydraulic machinery, power plants and coastal installations because of their desirable combination of relatively low material cost, high hardness and toughness, and outstanding corrosion and wear resistance [9][10][11][12]. In recent years, considerable efforts have been devoted to investigate the cavitation erosion behavior of Fe-based amorphous/nanocrystalline coatings [13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Effect of Initial Surface Roughness on Cavitation Erosion Resistance of Arc-Sprayed Fe-Based Amorphous/Nanocrystalline Coatings

et al. 2017

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Abstract:The arc spraying process was used to prepare Fe-based amorphous/nanocrystalline coating. The cavitation erosion behaviors of FeNiCrBSiNbW coatings with different surface roughness levels were investigated in distilled water. The results showed that FeNiCrBSiNbW coating adhered well to the substrate, and was compact with porosity of less than 2%. With increasing initial surface roughness, the coatings showed an increase in mass loss of cavitation erosion damage. The amount of pre-existing defects on the initial surface of the coatings was found to be a significant factor for the difference in the cavitation erosion behavior. The cavitation erosion damage for the coatings was a brittle erosion mode. The evolution of the cavitation erosion mechanism of the coatings with the increase of the initial surface roughness was micro-cracks, pits, detachment of fragments, craters, cracks, pullout of the un-melted particle, and massive exfoliations.

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The effect of residual stress on the electrochemical corrosion behavior of Fe-based amorphous coatings in chloride-containing solutions

Cited by 59 publications

References 42 publications

Synchronous Shot Peening Applied on HVOF for Improvement on Wear Resistance of Fe-based Amorphous Coating

Synchronous Shot Peening Applied on HVOF for Improvement on Wear Resistance of Fe-based Amorphous Coating

Thermal Conductivity and Wear Behavior of HVOF-Sprayed Fe-Based Amorphous Coatings

Effect of Initial Surface Roughness on Cavitation Erosion Resistance of Arc-Sprayed Fe-Based Amorphous/Nanocrystalline Coatings

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