MICROSTRUCTURE OF Fe-BASED AMORPHOUS AND NANOCRYSTALLINE COATINGS AND ITS CORROSION RESISTANCE IN H2O2 SOLUTION

J Chin Soc Corr Pro

2012, Vol. 32

Issue (4): 317-321 DOI:

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MICROSTRUCTURE OF Fe-BASED AMORPHOUS AND NANOCRYSTALLINE COATINGS AND ITS CORROSION RESISTANCE IN H₂O₂ SOLUTION

CUI Yuhui1, HU Rui¹, ZHANG Tiebang¹, LI Jian², KOU Hongchao¹, LI Jinshan¹

1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072
2. Wuhan Research Institute of Materials Protection, Wuhan 430030

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Abstract In order to investigate the effect of microstructure and phase composition on the corrosion resistance of Fe based amorphous and nanocrystalline coating in strong oxidative solution, suitable samples were prepared through the control of process parameter during air plasma spraying(APS) progress. A FeCrNiMoBPSiC powder was deposited onto the stainless steel (1Cr18Ni9Ti) substrate via APS. XRD, SEM, TEM and DSC were performed to investigate the characteristics of the coatings in composition of the phases, the rate and progress of crystalline, and porosity inner the coatings. In order to investigate the effect of microstructure and composition of the phases on the corrosion resistance of the coatings in 30%(mass percent) H₂O₂ solution, electrochemical workstation was applied. The results showed that the corrosion resistance of the coating decreases significantly for the formation of Mo₃S and Fe₅Si₃.

Key words: plasma spraying amorphous/nanocrystalline coating H₂O₂

Received: 04 July 2011

ZTFLH:

TG174.442

Corresponding Authors: ZHANG Tiebang E-mail: tiebangzhang@nwpu.edu.cn

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CUI Yuhui, HU Rui, ZHANG Tiebang, LI Jian, KOU Hongchao, LI Jinshan. MICROSTRUCTURE OF Fe-BASED AMORPHOUS AND NANOCRYSTALLINE COATINGS AND ITS CORROSION RESISTANCE IN H₂O₂ SOLUTION. J Chin Soc Corr Pro, 2012, 32(4): 317-321.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2012/V32/I4/317

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