ANALYSIS OF SPANGLES INHOMOGENEOUS DEFECT FOR GALVALUME

J Chin Soc Corr Pro

2011, Vol. 31

Issue (2): 101-104 DOI:

Research Articles

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ANALYSIS OF SPANGLES INHOMOGENEOUS DEFECT FOR GALVALUME

CHEN Binkai, HAO Xiaodong, JIANG Sheming, ZHANG Qifu

Central Iron & Steel Research Institute, National Engineering Laboratory of Advanced Coating Technology for Metal Material, Beijing 100081

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Abstract The morphology, microstructure and chemical composition of surface and cross section for mini spangle and normal spangle were studied respectively by OM and SEM-EDS. The microstructure, chemical composition and phase composition of alloy layer were studied by SEM-EDS and XRD. The results showed that morphology, microstructure and chemical composition were similar for mini spangle and normal spangle. The difference was that the amount of τ5 phase in alloy layer about mini spangle was more than about normal spangle. The difference of τ5 phase amount was the reason of spangles inhomogeneous. The more the τ5 phase, the more the nucleation sites, and the little the spangle.

Key words: coating of galvalume inhomogeneous spangle τ5 phase

Received: 01 February 2010

ZTFLH:

TG174.4

Corresponding Authors: CHEN Binkai E-mail: chenbinkai2005@163.com

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CHEN Binkai, HAO Xiaodong, JIANG Sheming, ZHANG Qifu. ANALYSIS OF SPANGLES INHOMOGENEOUS DEFECT FOR GALVALUME. J Chin Soc Corr Pro, 2011, 31(2): 101-104.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2011/V31/I2/101

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