Assessing the antifouling properties of cold-spray metal embedment using loading density gradients of metal particles

Vucko, M.J., King, P.C., Poole, A.J., Hu, Yi, Jahedi, M.Z., and de Nys, R. (2014) Assessing the antifouling properties of cold-spray metal embedment using loading density gradients of metal particles. Biofouling, 30 (6). pp. 651-666.

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Particles of copper, bronze and zinc were embedded into a polymer using cold-spray technology to produce loading density gradients of metal particles. The gradients were used to identify the species with the highest tolerance to the release of copper and zinc ions. The gradients also established the minimum effective release rates (MERRs) of copper and zinc ions needed to prevent the recruitment of fouling under field conditions. Watersipora sp. and Simplaria pseudomilitaris had the highest tolerances to the release of metal ions. Copper and bronze gradient tubes were similar in their MERRs of copper ions against Watersipora sp. (0.058 g m−2 h−1 and 0.054 g m−2 h−1, respectively) and against S. pseudomilitaris (0.030 g m−2 h−1 and 0.025 g m−2 h−1, respectively). Zinc was not an effective antifoulant, with failure within two weeks. In conclusion, cold-spray gradients were effective in determining MERRs and these outcomes provide the basis for the development of cold-spray surfaces with pre-determined life-spans using controlled MERRs.

Item ID: 34193
Item Type: Article (Research - C1)
ISSN: 1029-2454
Keywords: minimum effective release rate; metal ion tolerance; polymer; Watersipora sp.; copper; bronze
Funders: Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Projects and Grants: CSIRO Energy Flagship and Petroleum and Geothermal Research Portfolio
Date Deposited: 24 Jul 2014 02:59
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 50%
09 ENGINEERING > 0912 Materials Engineering > 091207 Metals and Alloy Materials @ 50%
SEO Codes: 86 MANUFACTURING > 8613 Transport Equipment > 861303 Nautical Equipment (excl. Yachts) @ 100%
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