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Journal of Chinese Society for Corrosion and protection  2025, Vol. 45 Issue (1): 191-200    DOI: 10.11902/1005.4537.2024.265
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Wear and Corrosion Resistance of FeCrMoSiB Amorphous Coating
LIANG Yuwei1,2,3, WANG Jie1,2,3, SONG Peng1,2,3,4(), HUANG Taihong1, BAO Yuxu5
1 Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
2 National-Local Joint Engineering Research Center for Technology of Advanced Metallic Solidification Forming and Equiment, Kunming University of Science and Technology, Kunming 650093, China
3 Yunnan Provincial International Joint Research and Development Center for Clean Emission Technology of Internal Combustion Engine, Kunming 650093, China
4 Faculty of Civil Aviation and Aeronautics, Kunming University of Science and Technology, Kunming 650500, China
5 Yunnan Tin New Materials Co., Ltd., Kunming 650500, China
Cite this article: 

LIANG Yuwei, WANG Jie, SONG Peng, HUANG Taihong, BAO Yuxu. Wear and Corrosion Resistance of FeCrMoSiB Amorphous Coating. Journal of Chinese Society for Corrosion and protection, 2025, 45(1): 191-200.

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Abstract  

Herein, An amorphous coating of FeCrMoBSi (namely Fe-18%-20%Cr, 7%-8%Mo, 5%-6%Si and 4%-5%B, in mass fraction) on 310S stainless steel was prepared by high velocity oxy-fuel (HVOF) spraying technique. The corrosion resistance in 3.5%NaCl solution and friction-wear performance before and after heat treatment, as well as the effect of heat treatment on the crystallization behavior for the as prepared amorphous coating were studied. The results indicated that the amorphous coating exhibited excellent corrosion resistance in 3.5%NaCl solution, characterized by the low porosity (2.45%) and the high Cr2O3 content (76.51%) in the as prepared coating, which can effectively protect the substrate. However, after being post heat-treated, numerous pores and cracks emerged in the coating, which can act as short-circuit diffusion channel for the corrosive media, leading to poor corrosion resistance. Results of friction- and wear-testing indicated that the as prepared amorphous coating exhibited the lowest wear volume and wear rate (1.784 × 10-5 mm3/(N·m)). Although, for the post heat-treated coatings, the wear volume and wear rate increase slightly with the increasing heat treatment temperature.

Key words:  amorphous coating      heat treatment      corrosion performance      wear performance     
Received:  21 August 2024      32134.14.1005.4537.2024.265
ZTFLH:  TG174  
Fund: Yunnan Key Research and Development Program(202303AP140016);Major Science and Technology Special Program(202302AG050006)
Corresponding Authors:  SONG Peng, E-mail: songpeng@kust.edu.cn

URL: 

https://www.jcscp.org/EN/10.11902/1005.4537.2024.265     OR     https://www.jcscp.org/EN/Y2025/V45/I1/191

Fig.1  Schematic illustration of preparation, and electrochemical and tribological tests for FeCrMoSiB amorphous coating
Fig.2  Morphologies of Fe-Cr-Mo-Si-B amorphous powders (a, b) and cross-sectional morphologies of HVOF sprayed coating on 310S stainless steel (c, d)
Fig.3  XRD patterns of Fe-Cr-Mo-Si-B amorphous powders and corresponding coating (a) and heat-treated coatings (b)
Fig.4  Curves of friction coefficients (a), cross-sectional depths (b) and wear rates (c) of Fe-AMC, HT400, HT500 and HT600 coatings
Fig.5  3D white light interferograms of the wear tracks of Fe-AMC (a), HT400 (b), HT500 (c) and HT600 (d) coatings at 25 oC
Fig.6  SEM images of wear tracks of Fe-AMC (a), HT400 (b), HT500 (c) and HT600 (d) coatings
Marked pointFeCrMoSiO
129.49.58.81.550.9
253.417.215.92.610.9
320.66.65.61.266.0
426.49.82.62.259.0
Table 1  EDS analysis results of chemical compositions of the marked points in Fig.6
Fig.7  Potentiodynamic polarization curves of as-spr-ayed and heat-treated coatings in 3.5%NaCl solution
Fig.8  Nyquist (a), Bode (b) and phase angle (c) plots of as-sprayed and annealed coatings in 3.5%NaCl solution, and corresponding equivalent circuit for fitting EIS data (d)
SampleRs / Ω·cm2Rp / Ω·cm2CPEc / μF·cm-2·S n-1CPEct / μF·cm-2·S n-1
Fe-AMC4.924442.627.078 × 10-40.5580
HT40011.66243.85.363 × 10-30.629
HT5006.659113.27.477 × 10-30.610
HT6008.5175.44.579 × 10-30.549
Table 2  Fitting electrochemical parameters of EIS of as-sprayed and annealed coatings
Fig.9  SEM surface morphologies of as-sprayed and annealed coatings after corrosion: (a) Fe-AMC, (b) HT400, (c) HT500, (d) HT600
Fig.10  XPS fine peaks of Cr 2p (a), Fe 2p (b) and Mo 3d (c) of four coatings after corrosion, and chemical compositions of the passive films formed on four coatings (d)
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