EFFECT OF RARE EARTH ON CORROSION RESISTANCE OF ELECTROLESS Ni-P/PVDF PLATINGS

J Chin Soc Corr Pro

2012, Vol. 32

Issue (2): 123-126 DOI:

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EFFECT OF RARE EARTH ON CORROSION RESISTANCE OF ELECTROLESS Ni-P/PVDF PLATINGS

DING Jie, ZHANG Benge, YAN Mingzhen, LIU Jia

China Petroleum Pipeline Engineering Corporation, Langfang 065000

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Abstract Ni-P/PVDF(RE) composite platings were deposited by adding rare earth elements Y³⁺ and La³⁺ into electroless Ni-P/PVDF alloy baths. The effects of rare earth content on corrosion resistance were estimated by electrochemical polarization measurement. The results indicate that at the proper rare earth content, the surface morphology of the electroless Ni-P/PVDF(RE) plating is more uniform and denser than that of Ni-P/PVDF plating. The corrosion resistance of the coatings increases at low rare earth content, and then decreased with the increase of its content. The optimum content of rare earth in plating bath is 0.1 g/L. Under the synergetic effect of rare earth and PVDF particles, the corrosion resistance of the Ni-P/PVDF(RE) plating is enhanced.

Key words: electroless plating Ni-P/PVDF coating rare earth corrosion resistance

Received: 17 March 2011

ZTFLH:

TG174

Corresponding Authors: DING Jie E-mail: cppedingjie@cnpc.com.cn

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DING Jie, ZHANG Benge, YAN Mingzhen, LIU Jia. EFFECT OF RARE EARTH ON CORROSION RESISTANCE OF ELECTROLESS Ni-P/PVDF PLATINGS. J Chin Soc Corr Pro, 2012, 32(2): 123-126.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2012/V32/I2/123

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