Hutasoit Novana, Kennedy Byron, Hamilton Stephanie, Luttick Angela, Rahman Rashid Rizwan Abdul, Palanisamy Suresh
Department of Mechanical and Product Design Engineering, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
SPEE3D, Dandenong, VIC 3175, Australia.
Manuf Lett. 2020 Aug;25:93-97. doi: 10.1016/j.mfglet.2020.08.007. Epub 2020 Aug 29.
In this work, cold-spray technique was employed for rapid coating of copper on in-use steel parts. The primary intention was to alleviate the tendency of SARS-CoV-2 (COVID-19) virus to linger longer on touch surfaces that attract high-to-medium volume human contact, such as the push plates used in publicly accessed buildings and hospitals. The viricidal activity test revealed that 96% of the virus was inactivated within 2-hrs, which was substantially shorter than the time required for stainless steel to inactivate the virus to the same level. Moreover, it was found that the copper-coated samples significantly reduces the lifetime of COVID-19 virus to less than 5-hrs. The capability of the cold-spray technique to generate antiviral copper coating on the existing touch surface eliminates the need for replacing the entire touch surface application with copper material. Furthermore, with a short manufacturing time to produce coatings, the re-deployment of copper-coated parts can be accomplished in minutes, thereby resulting in significant cost savings. This work showcases the capability of cold-spray as a potential copper-coating solution for different in-use parts and components that can act as sources for the spread of the virus.
在这项工作中，采用冷喷涂技术在在用钢部件上快速涂覆铜。主要目的是减轻严重急性呼吸综合征冠状病毒2（SARS-CoV-2，即新冠病毒）在吸引大量人群接触的触摸表面（如公共建筑和医院中使用的推门板）上长时间停留的趋势。杀病毒活性测试表明，96%的病毒在2小时内被灭活，这大大短于不锈钢将病毒灭活至相同水平所需的时间。此外，还发现铜涂层样品显著缩短了新冠病毒的存活时间，使其不到5小时。冷喷涂技术在现有触摸表面上生成抗病毒铜涂层的能力，消除了用铜材料替换整个触摸表面应用的需求。此外，由于生产涂层的制造时间短，铜涂层部件的重新部署可以在几分钟内完成，从而显著节省成本。这项工作展示了冷喷涂作为一种潜在的铜涂层解决方案，可用于不同的在用零部件，这些零部件可能成为病毒传播源。
