Corrosion resistance of Fe-Cr-based amorphous alloys: An overview

Souza, Carlos Alberto Caldas de; Ribeiro, Daniel Véras; Kiminami, Cláudio Shyinti

doi:10.1016/j.jnoncrysol.2016.04.009

Cited by 181 publications

(54 citation statements)

References 83 publications

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“…Fe-based bulk metallic glasses with a disordered and defect-free structure are emerging as highperformance materials for high-temperature corrosive applications. However, poor plastic deformation after yielding and no work hardening during room temperature deformation significantly limit their potential for application as structural materials (Ref [174][175][176]. Such drawbacks with bulk glassy alloys make Fe-based amorphous coatings more suited for industrial applications in aggressive environments (Ref 177-180).…”

Section: Fementioning

confidence: 99%

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

2019

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Power generation from renewable resources has attracted increasing attention in recent years owing to the global implementation of clean energy policies. However, such power plants suffer from severe high-temperature corrosion of critical components such as water walls and superheater tubes. The corrosion is mainly triggered by aggressive gases like HCl, H 2 O, etc., often in combination with alkali and metal chlorides that are produced during fuel combustion. Employment of a dense defect-free adherent coating through thermal spray techniques is a promising approach to improving the performances of components as well as their lifetimes and, thus, significantly increasing the thermal/electrical efficiency of power plants. Notwithstanding the already widespread deployment of thermal spray coatings, a few intrinsic limitations, including the presence of pores and relatively weak intersplat bonding that lead to increased corrosion susceptibility, have restricted the benefits that can be derived from these coatings. Nonetheless, the field of thermal spraying has been continuously evolving, and concomitant advances have led to progressive improvements in coating quality; hence, a periodic critical assessment of our understanding of the efficacy of coatings in mitigating corrosion damage can be highly educative. The present paper seeks to comprehensively document the current state of the art, elaborating on the recent progress in thermal spray coatings for high-temperature corrosion applications, including the alloying effects, and the role of microstructural characteristics for understanding the behavior of corrosion-resistant coatings. In particular, this review comprises a substantive discussion on high-temperature corrosion mechanisms, novel coating compositions, and a succinct comparison of the corrosion-resistant coatings produced by diverse thermal spray techniques.

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Section: Fementioning

confidence: 99%

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

2019

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“…Due to excellent mechanical, physical and chemical properties, amorphous alloys are ideal materials for aviation and spacecraft structures owing to the high specific strength, which is vital in the field of aerospace [1]. However, at present, the critical sizes of amorphous alloys with excellent deformability prepared by fast cooling method are limited within millimeters, constraining their wide applications as engineering materials [2].…”

Section: Introductionmentioning

confidence: 99%

“…2 Experimental procedure 1 In this study, the raw materials used for this study are Sn, Cu, Ni (purity 99.9%) and MRE (with about 60% Ce and about 40% La). First, Cu-RE master alloy was melted in an electronic resistance furnace at 500 °C for two hours.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mixed Rare Earths on the Wetting Behavior and Interfacial Reaction between Sn-0.70Cu-0.05Ni Solder and Amorphous Fe_84.3Si_0.3B_5.4 Alloy

Hou¹,

Liu²,

Wang

et al. 2018

MATEC Web Conf.

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In order to explore the effect of addition of mixed rare earths (MRE) on the wetting behavior and interfacial reaction between Sn-0.70Cu-0.05Ni solder and amorphous Fe84.3Si10.3B5.4 alloy, 0.25 wt.% percentage of the MRE, which are mainly elements La and Ce, were added into the solder. Results show it can refine the microstructure of the solder alloy, and there is limited change of melting temperature with the addition of MRE in the solder. The wettability of the solder on amorphous substrate is improved by adding 0.25 wt.% percentage of the MRE into Sn-0.70Cu-0.05Ni solder. Moreover, research results indicate that, with the increase of wetting temperature, the final equilibrium wetting angles of Sn-0.70Cu-0.05Ni and Sn-0.70Cu-0.05Ni-0.25MRE on amorphous substrate decrease gradually, indicating the better wettability at the higher wetting temperature. In addition, with the increase of temperature, the distribution of intermetallic compound (IMC) FeSn2 formed at the interface between the two solders and amorphous substrate is changed from discontinuous state to continuous state. The thickness of the interfacial IMC layer between solder and amorphous substrates reduced with the addition of MRE, indicating that the presence of 0.25 wt.% percentage of the MRE is effective in suppressing the growth of IMC layer.

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“…Co-and Fe-based bulk metallic glasses have received considerable attention because of their good soft magnetic properties [1][2][3][4][5][6][7][8][9][10], ultrahigh fracture strength values [1,3,6,7,[9][10][11][12][13][14][15][16] and high corrosion resistance [17,18]. Besides, they have a potential to be used in biomedical applications [17,19,20].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Iron Content on Glass Forming Ability and Thermal Stability of Co–Fe–Ni–Ta–Nb–B–Si Bulk Metallic Glass

Hitit

Şahin

2016

Metals

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Abstract:In this study, change in glass forming ability (GFA) and thermal stability of Co-Fe-based bulk metallic glasses were investigated as a function of iron content. Cylindrical samples of alloys with diameters of up to 4 mm were synthesized by a suction casting method in an arc furnace. Structures and thermal properties of the as-cast samples were determined by X-ray diffraction (XRD) and differential scanning calorimetry (DSC), respectively. It was found that the critical casting thickness of the alloys reduced as iron content was increased and cobalt content was decreased. It was determined that GFA parameters, reduced glass transition temperature (T g /T l ) andshow a very good correlation with critical casting thickness values. It was also observed that changing iron content did not effect thermal properties of the alloys.

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Corrosion resistance of Fe-Cr-based amorphous alloys: An overview

Cited by 181 publications

References 83 publications

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

Effect of Mixed Rare Earths on the Wetting Behavior and Interfacial Reaction between Sn-0.70Cu-0.05Ni Solder and Amorphous Fe_84.3Si_0.3B_5.4 Alloy

The Effect of Iron Content on Glass Forming Ability and Thermal Stability of Co–Fe–Ni–Ta–Nb–B–Si Bulk Metallic Glass

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Corrosion resistance of Fe-Cr-based amorphous alloys: An overview

Cited by 181 publications

References 83 publications

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

Effect of Mixed Rare Earths on the Wetting Behavior and Interfacial Reaction between Sn-0.70Cu-0.05Ni Solder and Amorphous Fe84.3Si0.3B5.4 Alloy

The Effect of Iron Content on Glass Forming Ability and Thermal Stability of Co–Fe–Ni–Ta–Nb–B–Si Bulk Metallic Glass

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Effect of Mixed Rare Earths on the Wetting Behavior and Interfacial Reaction between Sn-0.70Cu-0.05Ni Solder and Amorphous Fe_84.3Si_0.3B_5.4 Alloy