Microstructure and wear properties of laser clad Fe based amorphous composite coatings

Zhu, Qianyong; Wang, X. H.; Qu, Sx; Zou, Zhuang-Hui

doi:10.1179/026708408x334186

Cited by 16 publications

(5 citation statements)

References 15 publications

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“…To break down the problems of preparation dimensions and high cost of bulk amorphous alloys, many attempts have been made to prepare amorphous alloy coatings with different methods, including high-velocity oxy-fuel spraying (Wu et al , 2019), arc spraying (Lin et al , 2019; Guo et al , 2015; Liu et al , 2021), laser cladding (Zhu et al , 2009; Ibrahim et al , 2018), spark plasma sintering (Singh et al , 2010) and atmospheric plasma spraying (APS) (An et al , 2014; Jiang et al , 2018). APS is widely used in coating preparation because of its advantages of low cost, simplicity and flexibility (Zhang et al , 2014).…”

Section: Introductionmentioning

confidence: 99%

Influence of nano-alumina sealing treatment on corrosion resistance of Fe-based amorphous coatings

Wei

Ban

et al. 2022

ACMM

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Purpose The purpose of this paper is to investigate the effect of nano-alumina sealant sealing treatment on corrosion behavior of the Fe-based amorphous coatings deposited on 304 stainless steel plates by atmospheric plasma spraying (APS) with different hydrogen flow rates. Design/methodology/approach The surface morphology and microstructure of the unsealed and sealed coatings were characterized by scanning electron microscopy and X-ray diffraction. The corrosion resistance of the coatings was investigated by potentiodynamic polarization test and electrochemical impedance spectroscopy experiment in 3.5 Wt.% NaCl solution. Findings Results show that a few microcracks and pores exist in the as-sprayed Fe-based amorphous coatings. The pores on the surface of the coatings after sealing treatment have been filled with nano-alumina sealant, which can effectively prevent corrosive medium from entering into coatings. Electrochemical tests results show that the corrosion resistance of the coatings before sealing treatment decreases with the increase of hydrogen flow rate and is significantly improved by sealing treatment. Originality/value The effect of nano-alumina sealant sealing treatment on corrosion resistance of APS-sprayed Fe-based amorphous coatings is revealed. The corrosion resistance of the as-sprayed Fe-based amorphous coating can be significantly improved by nano-alumina sealant sealing treatment because of the blocking effect of nano-alumina sealant on corrosive medium, which confirms that the application of nano-alumina sealant sealing treatment is of a practical option to improve corrosion resistance of as-sprayed thermal sprayed coatings.

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Section: Introductionmentioning

confidence: 99%

Influence of nano-alumina sealing treatment on corrosion resistance of Fe-based amorphous coatings

Wei

Ban

et al. 2022

ACMM

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“…The laser-clad materials are therefore bulk metallic glasses (BMGs) of high glass-forming abilities (GFAs) in order to obtain as much amorphous content as possible. In recent years, many research works have been conducted to prepare Zr-, Cu-, Ni-, Co-, and Fe-based amorphous composite coatings using this technique [7][8][9][10][11][12]. Among the many amorphous alloy systems, transition metal-metalloid-based BMGs are the most promising to be used for laser cladding materials due to their high GFAs as well as wear and corrosion resistance properties.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of Laser-Clad (Co, Ni)61.2B26.2Si7.8Ta4.8 Coatings

Zhang

Wang

Qian

et al. 2017

Metals

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It has been reported that a quaternary Co 61.2 B 26.2 Si 7.8 Ta 4.8 alloy is a good glass former and can be laser-clad to an amorphous composite coating with superior hardness and wear resistance. In this paper, alloys with varying Ni contents to substitute for Co are coated on the surface of #45 carbon steel using a 5-kW CO 2 laser source for the purpose of obtaining protective coatings. In contrast to the quaternary case, the clad layers are characterized by a matrix of α-(Fe, Co, Ni) solid solution plus CoB, Co 3 B, and Co 3 Ta types of precipitates. The cladding layer is divided into four regions: Near-surface dendrites, α-(Fe, Co, Ni) solid solution plus dispersed particles in the middle zone, columnar bonding zone, and heat-affected area that consists of martensite. The hardness gradually decreases with increasing Ni content, and the maximum hardness occurs in the middle zone. Both the friction coefficient and wear volume are minimized in the alloy containing 12.2% Ni. Compared with the previous cobalt-based quaternary alloy Co 61.2 B 26.2 Si 7.8 Ta 4.8 , the addition of the Ni element reduces the glass-forming ability and henceforth the hardness and wear resistance of the clad layers.

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“…Amorphous coating has many advantages in their superior corrosion resistance [1], high modulus, better wear resistance [2,3], and unique magnetic properties and so on [4]. Currently, metallic glass coatings are mostly fabricated by magnetron sputtering method with a growth rate of several nanometers per minute [5,6].…”

Section: Introductionmentioning

confidence: 99%

Freestanding FeCrAl-Y<sub>2</sub>O<sub>3</sub> Amorphous/Crystalline Composite Coating Fabricated by Electron-Beam Physical Vapor Deposition

Lin

Song

Gou

et al. 2014

MSF

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Freestanding FeCrAl-Y2O3 amorphous/crystalline composite coating with a thickness of about 200μm has been produced from electron-beam physical vapor deposition of FeCrAl and yttria materials with a substrate temperature of 500 oC around. The microstructure was composed of columnar grains near the substrate side and an amorphous top layer. Local crystallization occurred during room temperature preservation. It is inferred that the crystallization activation energy of the material is very low.

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Microstructure and wear properties of laser clad Fe based amorphous composite coatings

Cited by 16 publications

References 15 publications

Influence of nano-alumina sealing treatment on corrosion resistance of Fe-based amorphous coatings

Influence of nano-alumina sealing treatment on corrosion resistance of Fe-based amorphous coatings

Microstructure and Wear Resistance of Laser-Clad (Co, Ni)61.2B26.2Si7.8Ta4.8 Coatings

Freestanding FeCrAl-Y<sub>2</sub>O<sub>3</sub> Amorphous/Crystalline Composite Coating Fabricated by Electron-Beam Physical Vapor Deposition

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