Corrosion Behavior of Cold Spray Cu-Ti Pseudo Alloy as Anti-fouling Material in Natural Seawater

doi:10.11902/1005.4537.2024.347

Journal of Chinese Society for Corrosion and protection

2025, Vol. 45

Issue (5): 1309-1319 DOI: 10.11902/1005.4537.2024.347

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Corrosion Behavior of Cold Spray Cu-Ti Pseudo Alloy as Anti-fouling Material in Natural Seawater

GU Songlun¹, ZHANG Fan², HUANG Guosheng²(

), JIANG Dan², DONG Guojun¹

1 Yantai Research Institute, Harbin Engineering University, Yantai 264000, China
2 National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, China

Cite this article:

GU Songlun, ZHANG Fan, HUANG Guosheng, JIANG Dan, DONG Guojun. Corrosion Behavior of Cold Spray Cu-Ti Pseudo Alloy as Anti-fouling Material in Natural Seawater. Journal of Chinese Society for Corrosion and protection, 2025, 45(5): 1309-1319.

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Abstract

Herein, as the candidate material of anti-fouling, four Cu-Ti pseudo alloys with different Ti contents (mass fraction) of 0%, 5%, 10%, and 15% were prepared by cold spraying method, and their microstructure and composition were characterized by SEM, EDS, and XRD. Meanwhile their corrosion performance in natural seawater is assessed by means of electrochemical measurements, namely free corrosion potential and potentiodynamic polarization curve, scanning vibration electrode (SVET) micro electrochemical measurement and inductively coupled plasma emission spectrum analyzer. Results indicated that in natural seawater, Cu particles and Ti particles on the surface of the prepared pseudo alloy Cu-Ti anode can naturally form micro galvanic couples. With the increase of Ti mass fraction, the corrosion rate of the prepared pseudo alloy Cu-Ti anode is accelerated due to the increased number of micro galvanic cells composed of Cu and Ti particles. When the Ti mass fraction is 15%, the corrosion rate is the fastest, and the copper ion release rate increases by nearly ten times, reaching 280 μg/(cm²·d). This method can effectively accelerate the release of Cu ions from the Cu-Ti pseudo alloy materials and promote their anti-fouling effect.

Key words: cold spray pure copper micro-galvanic corrosion corrosion behavior marine anti-fouling

Received: 27 October 2024 32134.14.1005.4537.2024.347

ZTFLH:

TG172

Fund: National Natural Science Foundation of China(U2141251)

Corresponding Authors: HUANG Guosheng, E-mail: huanggs@sunrui.net

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	GU Songlun
	ZHANG Fan
	HUANG Guosheng
	JIANG Dan
	DONG Guojun

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https://www.jcscp.org/EN/10.11902/1005.4537.2024.347 OR https://www.jcscp.org/EN/Y2025/V45/I5/1309

Fig.1 Morphologies of TUP2 (a) and TA2 (b) powders used in cold spraying

Fig.2 Size distributions of TUP2 powders (a) and TA2 powders (b)

Fig.3 Macroscopic morphologies of cold sprayed (a) and heat-treated (b) Cu-Ti pseudo alloys with different titanium contents

Fig.4 Surface micro-morphologies of cold sprayed Cu (a), Cu-5Ti (b), Cu-10Ti (c) and Cu-15Ti (d)

Fig.5 Comparisons of the actual and nominal contents of Ti in as-sprayed materials and raw powders, respectively

Fig.6 SEM image of Cu-10Ti pseudo alloy (a), EDS line scannings of Cu and Ti along the arrow direction denoted in Fig.6a (b), and corresponding mappings of Cu (c) and Ti (d)

Fig.7 Porosities of as-sprayed Cu, Cu-5Ti, Cu-10Ti and Cu-15Ti

Fig.8 XRD patterns of raw powders and cold-sprayed Cu-Ti materials after heat treatment

Fig.9 Corrosion morphologies of Cu (a), Cu-5Ti (b), Cu-10Ti (c) and Cu-15Ti (d) after immersion in natural seawater for 30 d

Fig.10 Schematic diagram of galvanic corrosion

Fig.11 XRD patterns of Cu-Ti pseudo alloys after 30 d immersion in natural seawater

Fig.12 Open circuit potentials of Cu-Ti pseudo alloys after immersion in natural seawater for 30 d

Fig.13 SVET spectra of Cu (a), Cu-5Ti (b), Cu-10Ti (c) and Cu-15Ti (d) at the initial stage of immersion in natural seawater

Fig.14 SVET profiles of Cu (a), Cu-5Ti (b), Cu-10Ti (c) and Cu-15Ti (d) immersed in natural seawater for 24 h

Fig.15 Release rates of copper ions from natural seawater for Cu-Ti pseudo alloys

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