Nanostructured protective coatings for harsh environments

适用于恶劣环境的纳米结构保护涂层

• 批准号: RGPIN-2022-05243
• 负责人: KlembergSapieha, Jolanta
• 金额: $ 4.01万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=754591
• 关键词: Nanostructured; protective; coatings; harsh; environments

Progress in protective coatings (PC) presents important challenges and opportunities that significantly impact sustainable development and the economic and environmental benefits in many industrial sectors, including aerospace, automotive, manufacturing, mining, biomedical, pharmaceutical, energy, and others. These aspects have strongly stimulated research on PC with enhanced mechanical, tribological and corrosion properties frequently combined with other functional characteristics such as controlled thermal and electrical conductivities, low sticking and others. Despite the progress in the development of the fabrication processes and materials for PC, the acceptance and further advances in this area are frequently limited by insufficient stability and durability at high temperatures and in oxidative environments, by high residual stresses in the PC systems, and adhesion to the underlying substrate. In addition, the detailed mechanisms of the coatings system failure under specific, application-related external solicitations such as tribolo-mechanical loading under hostile environmental conditions are not sufficiently understood. In response to the important needs in the field of thin protective, functional and multifunctional coating systems described above, the proposed research program will focus on developing a new class of coating architectures with embedded Thin Film Metallic Glasses (TFMG, also called amorphic metals or glassy metals). Specifically, the TFMG possess an amorphous, glass-like structure, hence they contain no grain boundaries giving rise to high corrosion, oxidation, and wear resistance compared to the polycrystalline structures. They also combine high strength and high toughness, low coefficient of friction, high hardness, low surface energy, and are very smooth. In this context, the proposed program will advance research on PC while specifically focusing on the following aspects: 1. Design and fabrication of new and novel TFMG coatings using low pressure, pulsed plasma processes (PPP) including High Power Impulse Magnetron Sputtering (HiPIMS) with synchronized target-substrates interactions; 2. Assessment and optimization of the mechanical, tribological, corrosion and tribo-corrosion characteristics as well as of the thermal stability of the TFMG coatings individually, and 3. Performance of complex multilayer hard coating systems with embedded TFMG sublayers. The main impact of the proposed research is based on the following attributes: a) it will contribute detailed understanding of the mechanisms responsible for the formation of TFMG coatings; b) It will help to explain their exceptional mechanical and protective performance; c) It will lead to significant improvement of the tribo-mechanical performance of protective coatings and open new areas of applications of particular interest of the Canadian economy.

防护涂料 (PC) 的进步带来了重要的挑战和机遇，对许多工业领域的可持续发展以及经济和环境效益产生重大影响，包括航空航天、汽车、制造、采矿、生物医学、制药、能源等。这些方面强烈刺激了对 PC 的研究，这些 PC 具有增强的机械、摩擦和腐蚀性能，通常与其他功能特性相结合，例如受控的导热性和导电性、低粘附性等。尽管 PC 制造工艺和材料的开发取得了进展，但该领域的接受度和进一步发展常常受到高温和氧化环境下稳定性和耐久性不足、PC 系统中的高残余应力以及对底层基材的粘附力的限制。此外，涂层系统在特定的、与应用相关的外部请求（例如恶劣环境条件下的摩擦机械负载）下失效的详细机制尚未得到充分理解。 为了满足上述薄保护性、功能性和多功能涂层系统领域的重要需求，拟议的研究计划将重点开发一类具有嵌入式薄膜金属玻璃（TFMG，也称为非晶金属或玻璃金属）的新型涂层结构。具体而言，TFMG 具有非晶态玻璃状结构，因此它们不包含晶界，与多晶结构相比，具有较高的耐腐蚀性、氧化性和耐磨性。它们还结合了高强度和高韧性、低摩擦系数、高硬度、低表面能，并且非常光滑。在此背景下，拟议的计划将推进 PC 的研究，同时特别关注以下方面： 1. 使用低压脉冲等离子体工艺（PPP）设计和制造新型 TFMG 涂层，包括具有同步靶材-基底相互作用的高功率脉冲磁控溅射（HiPIMS）； 2. 单独评估和优化 TFMG 涂层的机械、摩擦学、腐蚀和摩擦腐蚀特性以及热稳定性，以及 3. 嵌入 TFMG 子层的复杂多层硬质涂层系统的性能。拟议研究的主要影响基于以下属性：a）它将有助于详细了解 TFMG 涂层形成的机制； b) 有助于解释其卓越的机械和防护性能； c) 它将显着提高防护涂层的摩擦机械性能，并开辟加拿大经济特别感兴趣的新应用领域。