二水磷酸氢钙包覆镁粉的组织及其在NaCl溶液中的腐蚀行为

doi:10.11896/j.issn.1005-023X.2018.04.005

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Abstract Magnesium coated with calcium phosphate were produced via chemical liquid deposition method. The coating were analyzed by scanning electron microscope(SEM), energy dispersive spectrometer (EDS), X-ray diffraction(XRD) and Fourier transform infrared spectroscopy(FT-IR). Accelerated surface area and porosimetry system(ASAP-2020) was used to measure the specific surface area of different powders. The corrosion process of coated and uncoated powders were studied by immersion test. It was shown that the magnesium powder were coated with a layer of dicalcium phosphate dihydrate(DCPD) with thickness of 2—4 μm. The coated particles were spheric, similar to the raw magnesium particles. The specific surface area of coated powder increased by sixty times, compared to uncoated powder, and the corrosion rate of coated powder in 3.5wt% NaCl solution decreased over 4 orders of magnitude.

Key words： magnesium powder DCPD coated powder specific surface area corrosion

Published: 25 February 2018

CLC number:	TG178
	R318.08

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	Articles by authors
	WANG Yong
	XIE Shuai
	QIAO Liying
	LIU Yue
	ZHAO Chuan

Cite this article:

WANG Yong,XIE Shuai,QIAO Liying, et al. Micro-structure and Properties of Calcium Phosphate Ceramic Coated Magnesium Powder and the Corrosion Performance in NaCl Solution[J]. Materials Reports, 2018, 32(4): 533-538.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.04.005 OR http://www.mater-rep.com/EN/Y2018/V32/I4/533

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