Interfacial morphology and tribo-corrosion behaviour of Fe-15.3 wt % Cr-3.1 wt % B-6.2 wt % Mo alloy in molten aluminium

Ling, Zicheng; Chen, Weiping; Lu, Tiwen; Li, Bing; Zhang, Xianman

doi:10.1016/j.wear.2019.04.002

Cited by 19 publications

(4 citation statements)

References 42 publications

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“…From the EDS result, all elements were evenly distributed, and some Fe and Cr oxides (Long et al , 2008) were formed on the worn track. The Cr-rich phase was used as diffusion barrier to weaken the diffusion rate of corrosive solution and protect the matrix from corrosion (Ling et al , 2019), which contributed to the improvement of the corrosion-wear resistance in 3.5% NaCl solution. In conclusion, the corrosion-wear mechanism of Fe90-Al 2 O 3 -10%Cr coating was microabrasive wear.…”

Section: Analysis and Discussionmentioning

confidence: 99%

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Dejun

2022

ACMM

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Purpose This paper aims to investigate the effects of Cr and Ta additions on the friction performance and corrosion-wear mechanism of Fe90-Al2O3 coating in 3.5% NaCl solution. Design/methodology/approach Cr and Ta reinforced Fe90-Al2O3 coatings were prepared on Q235 steel by laser cladding. The effects of Cr and Ta addition on the coefficient of friction (COF) and wear rate of Fe90-Al2O3 coating were investigated using a friction tester, and the wear model was established to discuss its corrosion-wear mechanism. Findings The average COFs of Fe90-Al2O3, Fe90-Al2O3-10%Cr and Fe90-Al2O3-10%Ta coatings in 3.5% NaCl solution are 0.57, 0.42 and 0.75, respectively, and the corresponding wear rates are 9.42 × 10−7, 5.31 × 10−7 and 7.02 × 10−7 mm3 s−1 N−1, respectively. The corrosion-wear resistance of Fe90-Al2O3-10%Cr coating is the best among the three kinds of coatings, in which the additions of Cr and Ta play a role in solid solution strengthening. Originality/value The Fe90-Al2O3 coating was strengthened by the additions of Cr and Ta to improve its corrosion-wear resistance in 3.5% NaCl solution.

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Section: Analysis and Discussionmentioning

confidence: 99%

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Dejun

2022

ACMM

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“…Similar results have been reported in Refs. [31,32], where the wear damage to the passive films outside the specimen surface was considered to be the crucial factor. Subsequently, as the friction tends to be stable, the OCP values begin to rise.…”

Section: Effects Of Anisotropy On Tribo-corrosion Performancementioning

confidence: 99%

The roles of microstructural anisotropy in tribo-corrosion performance of one certain laser cladding Fe-based alloy

Sun

Xue-hong²,

Zhang

et al. 2023

Friction

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Because of the microstructural anisotropy for laser cladding materials, the tribo-corrosion performance can vary significantly with different directions. In this study, one certain Fe-based coating was fabricated by laser cladding. To study the effects of anisotropy, three working surfaces (0°, 45°, and 90° to the building direction) were machined from the laser cladding samples; as-cast samples with an approximately homogeneous structure were prepared as controls. The tribo-corrosion tests were conducted in a 3.5 wt% NaCl solution with varying normal loads (5, 10, and 15 N). The results demonstrated that the 45° surface has superior friction stability, corrosion resistance, and wear resistance. This was directly related to the crystal orientation and grain boundary density. In addition, a refined microstructure may enhance tribo-corrosion properties by increasing deformation resistance and decreasing surface activity.

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“…In the past few decades, many efforts have been made to improve the high-temperature corrosion-wear behaviors of metal materials in metal liquids during the liquid metal forming [ 1 , 2 , 3 , 4 , 5 ]. There is good evidence that Fe–B alloys have good corrosion resistance due to the formation of a large number of stable and continuous borides in the matrix [ 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Boride Orientation and Si Content on High-Temperature Oxidation Resistance of Directionally Solidified Fe–B Alloys

Guo

He²,

et al. 2022

Materials

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In this work, the as-cast directionally solidified (DS) Fe–B alloys with various Si contents and different boride orientation were designed and fabricated, and the as-cast microstructures and static oxidation behaviors of the DS Fe–B alloys were investigated extensively. The as-cast microstructure of the DS Fe–B alloys consists of the well-oriented Fe2B columnar grains and α-Fe, which are strongly refined by Si addition. The oxidation interface of the scales in the DS Fe–B alloy with 3.50 wt.% Si demonstrates an obvious saw-tooth shaped structure and is embedded into the alternating distributed columnar layer structures of the DS Fe–B alloy with oriented Fe2B and α-Fe matrix, which is beneficial to improve the anti-peeling performance of the oxide film compared with lower amounts of Si addition in DS Fe–B alloys with oriented Fe2B [002] orientation parallel to the oxidation direction (i.e., oxidation diffusion direction, labeled as Fe2B// sample). In the DS Fe–B alloys with oriented Fe2B [002] orientation vertical to the oxidation direction (i.e., labeled as Fe2B⊥ sample), due to the blocking and barrier effect of laminated-structure boride, Si is mainly enriched in the lower part of the oxide film to form a dense SiO2 thin layer adhered to layered boride. As a result, the internal SiO2 thin layer plays an obstructed and shielded role in oxidation of the substrate, which hinders the further internal diffusion of oxygen ions and improves the anti-oxidation performance of the Fe2B⊥ sample, making the average anti-oxidation performance better than that of the Fe2B// sample.

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Interfacial morphology and tribo-corrosion behaviour of Fe-15.3 wt % Cr-3.1 wt % B-6.2 wt % Mo alloy in molten aluminium

Cited by 19 publications

References 42 publications

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

The roles of microstructural anisotropy in tribo-corrosion performance of one certain laser cladding Fe-based alloy

Effects of Boride Orientation and Si Content on High-Temperature Oxidation Resistance of Directionally Solidified Fe–B Alloys

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Interfacial morphology and tribo-corrosion behaviour of Fe-15.3 wt % Cr-3.1 wt % B-6.2 wt % Mo alloy in molten aluminium

Cited by 19 publications

References 42 publications

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al2O3 coating in 3.5% NaCl solution

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al2O3 coating in 3.5% NaCl solution

The roles of microstructural anisotropy in tribo-corrosion performance of one certain laser cladding Fe-based alloy

Effects of Boride Orientation and Si Content on High-Temperature Oxidation Resistance of Directionally Solidified Fe–B Alloys

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Interfacial morphology and tribo-corrosion behaviour of Fe-15.3 wt % Cr-3.1 wt % B-6.2 wt % Mo alloy in molten aluminium

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution