PACKAGING | COLD DEPOSITION
Quality coatings with cold deposition
A next-generation cold spray deposition solution for superior anti-corrosion coatings of nuclear storage and transport containers has been developed by Linde and Impact Innovations. Their goal is to take cold spraying technology to the next level.
A next-generation cold spraying coating system has been developed with the goal of significantly improving the corrosion resistance of storage and transport containers used in the nuclear industry. These very large and heavy casks are typically stainless steel. Using the cold spray process a nickel-based alloy is sprayed on the inside of the containers to give additional corrosion protection using an automated process.
Developed by Linde working in collaboration with German cold spraying technology firm Impact Innovations, LINSPRAY® Connect complements the Impact EvoCSII cold spray system. The goal of the new system is enhanced reliability and a reduction in the instances of rejects and any rework required. The quality of the coating technique means that it is
Right: The Impact cold deposition system. Source: Impact Innovations
possible to use a thinner layer yet still retain very long-lasting corrosion resistance. However, for the nuclear transport sector this approach is used to give very good corrosion resistance but also improved wear
characteristics by using a relatively thick coating. The cold spraying technique has the advantage that it
combines the thickness of the coating together with the total density and good bonding with the substrate, in this case the steel of the container. These qualities deliver extremely high corrosion resistance that can withstand all corrosion tests for a considerable period, a key factor for nuclear materials transport. “That's an advantage as we don't really have any
thickness limitation on the deposition process itself. The only limitation on the thickness is there are related costs there as obviously the thicker the coating the more expensive it gets,” explains Linde’s Werner Krömmer. Krömmer, Business Development Engineer for the manufacturing industry segment at Linde, adds: “While quite often we have a requirement to apply a very thin coating that is gas tight, but for the nuclear industry it needs a very robust, thicker coating that can withstand everything for a very, very long time.”
18 | June 2023 |
www.neimagazine.com
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