Microstructure and corrosion resistance of Fe-based amorphous coating prepared by detonation spray

Cui, Shuai; Zhai, Hua; Li, Wensheng; Fan, Xiangjuan; Li, Xuqiang; Ning, Weichao; Xiong, Dangsheng

doi:10.1016/j.surfcoat.2020.126096

Cited by 39 publications

(9 citation statements)

References 38 publications

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“…Precise control of the explosive mixture parameters, the location of powder injection point, and the interval between shots allow controlling the particle impact temperature and velocity with high precision [13][14][15]. The detonation spraying could be successfully applied for deposition of single-material metal and ceramic coatings [16][17][18][19][20]. The possibility of manufacturing of gradient coatings was also reported [21,22].…”

Section: Introductionmentioning

confidence: 99%

Formation of metal composites by detonation spray of powder mixtures

Ulianitsky

Rybin

Sova

et al. 2021

Int J Adv Manuf Technol

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The feasibility study of elaboration of metal composite coatings by detonation spray using the blends of iron, nickel, copper, cobalt, and aluminum powders was performed using different spray modes. The numerical simulation of particle parameters showed that the particles formed the coating in solid, semi-molten, or molten state depending on the spraying modes, particle material, and particle size. It was shown that successful formation of the coating containing all powder mixture components could be achieved in case of proper optimization of spraying parameters. Obtained Fe-Co-Ni, Fe-Co-Ni-Cu, and Fe-Co-Ni-Cu-Al coatings had the uniform lamellae structure. However, the composition of the coatings differed from the initial powder mixture composition due to different deposition efficiencies of the powders. It was also found the mutual influence of blend components on bonding. In particular, the deposition efficiency of iron particles was probably affected by copper.

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Section: Introductionmentioning

confidence: 99%

Formation of metal composites by detonation spray of powder mixtures

Ulianitsky

Rybin

Sova

et al. 2021

Int J Adv Manuf Technol

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“…Therefore, compared with stainless steel, the Fe-based amorphous surface tends to form more uniform and dense passivation films with a high corrosion potential [36][37][38]. In HVOF spraying, insufficient heat will lead to poor coating formation, leaving more pores to destroy the structure uniformity of the coating (loose structure as shown in Figure 2a), while excessive heat will induce oxidation and crystallization of the coating and destroy the uniform composition of the coating [39][40][41][42]. It is generally believed that the nanocrystals on the coating surface form potential pitting sites after galvanic coupling with the passivation film [43].…”

Section: Discussionmentioning

confidence: 99%

Effect of Oxidation and Crystallization on Pitting Initiation Behavior of Fe-Based Amorphous Coatings

Zhang

Wang

et al. 2022

Coatings

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Fe-based amorphous coatings are typically fabricated by high-velocity oxygen-fuel spraying using industrial raw materials. The bonding mode between the coating particles and the corrosion mechanism of the coating in the chloride-rich environment were studied. The results indicate that some fine crystallites such as α-Fe and Fe3C tend to precipitate from the amorphous matrix as the kerosene flow rate increases or the travel speed of spraying gun decreases. Moreover, some precipitates of the (Cr, Fe)2O3 nanocrystal were detected in the metallurgical interfaces of the amorphous coating. The relationship among the amorphous volume fraction, porosity, and spraying parameters, such as the kerosene flow rate and the travel speed of the spray gun, were established. Due to an oxidation effect during spraying process, atomic diffusion, crystallite precipitation and regional depletion of Cr occur in the area along the pre-deposited side near the metallurgical bonding interface, leading to the initiation of pitting. A model of pitting initiation and expansion of Fe-based amorphous coatings is proposed in this paper.

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“…Optimum selection of spraying parameter can lead to the best coating result. In this regard, the optimum oxygen fuel ratio for lowest porosity and maximum amorphousity was 2 in the range of 1.7 to 2.5 [9]. In another study for finding optimum parameter related to best corrosion resistance and maximum hardness, spraying distance and oxygen flow rate was obtained at 330 mm and 963 L/min respectively [10].…”

Section: Introductionmentioning

confidence: 89%

Effect of varying chromium and titanium content on corrosion, mechanical and solid particle erosion properties of iron alloy based coating

Sharma

Das

Kumar³

2022

Materialwissenschaft Werkst

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In the present study, three different series of iron alloy based coating materials with varying chromium and titanium content (FeMoCSiBCr10, Fe-MoCSiBCr10Ti10, FeMoCSiBTi10) were deposited on 316L stainless steel using High velocity oxy-fuel spraying method. The effect of alloying element chromium and titanium on corrosion, mechanical and erosion properties of iron alloy based coating material was evaluated. Corrosion test was performed in the medium of sodium chloride (3.5 wt.%). Mechanical tests were performed in terms of microhardness and fracture toughness. The solid particle erosion test of iron based coating materials was performed according to steady state condition by varying impact speed and impingement angle. The finding of results indicated that in case of 10 wt.% titanium, the micro-hardness and fracture toughness was increased by 25.6 % and 16 % respectively, whereas in case of 10 wt.% chromium, the microhardness and fracture toughness was increased by 20.6 % and 9.8 % respectively. It can be concluded for the selection of an alloying element in an iron alloy based coating material, titanium should be given preference over chromium to get better mechanical and solid particle erosion properties whereas chromium should be given preference over titanium to get better corrosion properties.

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Microstructure and corrosion resistance of Fe-based amorphous coating prepared by detonation spray

Cited by 39 publications

References 38 publications

Formation of metal composites by detonation spray of powder mixtures

Formation of metal composites by detonation spray of powder mixtures

Effect of Oxidation and Crystallization on Pitting Initiation Behavior of Fe-Based Amorphous Coatings

Effect of varying chromium and titanium content on corrosion, mechanical and solid particle erosion properties of iron alloy based coating

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