Polymeric Coatings for Improved Corrosion Resistance

Lorax Systems Inc.，达特茅斯，NS，专门从事燃油过滤系统和环境保护技术。例如，LineGuardian泄漏保护系统在家庭燃油系统以外的应用中获得了国际关注，例如家用水管保护，液体丙烷气体系统泄漏预防，海洋环境中的大直径燃料输送应用以及石油和天然气行业中的管道监控。他们目前的产品线以及扩展到新的应用领域都有严格的材料需求。就选择用于构建其组件的金属而言，耐腐蚀性尤为重要。当在竞争激烈的市场环境中运营时，原材料成本也是关键考虑因素，因此提高低成本材料的性能特别有益。这项工作概述了一种方法，电化学涂层金属零件的保护性聚合物涂层，可以应用到各种基材合金。这种方法的好处是，该过程不是简单的视线，从而也可以实现内部涂层（例如过滤器）。为了评估该技术的适用性，最初将对低碳钢和不锈钢基材等级进行涂层，两者都与Lorax Systems相关。然后进行初步腐蚀试验，在模拟合成海水环境中比较有涂层和无涂层的材料，并通过诱导受控表面划痕（“漏涂”）评估涂层损坏的影响。该项目的成功完成将使Lorax Systems能够将涂层程序集成到其制造技术中，以提高组件的使用寿命。

Lorax Systems Inc., Dartmouth, NS, specialise in fuel filtration systems and environmental protectiontechnology. As an example, the LineGuardian leak protection system has garnered international attention forapplications beyond home fuel oil systems, for example in uses such as house-hold water line protection, liquidpropane gas system leak prevention, large-diameter fuel transfer applications in marine environments, andpipeline monitoring within the oil and gas industry. There are severe materials demands for both their currentproduct line, as well as for expansion into new applications. In terms of the metals selected for construction oftheir components, the corrosion resistance is particularly important. When operating in highly competitivemarket environments, raw materials costs are also of critical consideration, so that improving performance oflower cost materials can be particularly beneficial. The proposed work outlines an approach toelectrochemically coat metallic parts with protective polymeric coatings that can be applied onto a variety ofsubstrate alloys. This approach has the benefit that the process is not simply line-of-sight, such that internalcoatings can also be achieved (e.g. filters). To assess applicability of this technique, initially both mild andstainless steel substrate grades will be coated, both being of relevance to Lorax Systems. Preliminary corrosiontests will then be conducted to compare the coated and uncoated materials in a simulated, synthetic seawaterenvironment, with the influence of coating damage also evaluated by inducing controlled surface scratches("holidays"). Successful completion of this project will allow Lorax Systems to integrate coating proceduresinto their manufacturing techniques, to enhance component lifetimes.