Multi-scale mechanical and tribological characterization techniques for development of robust cold spray coatings

用于开发坚固的冷喷涂涂层的多尺度机械和摩擦学表征技术

• 批准号: 341216-2011
• 负责人: Chromik, Richard
• 金额: $ 2.19万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=527220
• 关键词: Multi; scale; mechanical; tribological; characterization

Cold spray is an innovative deposition process that holds promise for breakthrough technologies in the next century. It has the potential to provide green manufacturing methods of building up structures rather than machining down. It also has the potential to provide repair of worn or corroded engineering surfaces in the field. Repairing on site at a mine or forestry site would provide huge cost saving and reduce environmental impact associated with transport of heavy machinery. With all of this promise and potential, the cold spray technology is still very new and materials fabricated by it are still poorly understood. Like any new manufacturing method, there needs to be significant background knowledge generated about the effect of process conditions on the material structure and properties and ultimately the performance in an engineering application. This proposal is on an innovative multi-scale testing methodology that will provide data on the mechanical and tribological properties of cold sprayed material. By testing at different length scales, we will discover the mechanisms that lead to the bulk performance. With this knowledge, the process can be optimized to obtain materials with robust mechanical and tribological properties. The main outcomes of the study will be twofold. First a significant library of information will be obtained quickly on a range of materials, including their sprayability and material properties. Second, the multi-scale test methodology will be demonstrated such that small-scale tests are directly calibrated to bulk performance. Engineers using cold spray may then have the option to use small-scale tests to monitor the effect process variables have on material properties. In summary, this proposal details an innovative materials science approach for determining mechanical and tribological properties of cold spray coatings and seeks to optimize process conditions for a range of materials to make the most robust coatings possible.

冷喷涂是一种创新的沉积工艺，有望在下个世纪实现突破性技术。它有可能提供绿色制造方法，建造结构，而不是加工。它还有可能为现场磨损或腐蚀的工程表面提供修复。在矿山或林业现场进行现场维修将节省大量成本，并减少与重型机械运输相关的环境影响。尽管有这样的前景和潜力，冷喷涂技术仍然是非常新的技术，由它制造的材料仍然鲜为人知。与任何新的制造方法一样，需要有关于工艺条件对材料结构和性能的影响以及最终在工程应用中的性能的重要背景知识。这项建议是关于一种创新的多尺度测试方法，该方法将提供冷喷涂材料的机械和摩擦学性能数据。通过在不同长度尺度上的测试，我们将发现导致批量性能的机制。有了这些知识，工艺就可以优化，以获得具有坚固的机械和摩擦学性能的材料。这项研究的主要结果将是两方面的。首先，将快速获得一系列材料的重要信息库，包括它们的喷涂性和材料特性。其次，将演示多尺度测试方法，以便将小规模测试直接校准为批量性能。然后，使用冷喷涂的工程师可以选择使用小规模测试来监控工艺变量对材料性能的影响。总之，该建议详细介绍了一种创新的材料科学方法，用于确定冷喷涂涂层的机械和摩擦学性能，并寻求优化一系列材料的工艺条件，以使最坚固的涂层成为可能。