New approaches to the assessment and control of microstructure and stress in advanced protective coatings

保护性涂料（PC）的发展带来了非常重要的挑战和机遇，对可持续发展产生了重大影响，并在许多工业部门（包括航空航天、汽车、制造业、生物医学、采矿、能源等）带来了显著的经济和环境效益。尽管PC制造工艺和涂层结构取得了进展，但该领域的接受和进一步发展经常受到涂层系统中高残余应力的限制，主要与缺乏应力产生机制的基本和全面知识有关，它们与微观结构的复杂关系，以及补偿它的途径的可用性，甚至如何将其纳入涂层系统设计中。 为了应对这些技术挑战和目标，蒙特利尔理工学院（PM）的FCSEL团队与MDS Coating Technologies（MCT）和IHI Hauzer Techno Coating BV（Hauzer）合作，提出研究评估和控制先进保护涂层中微观结构和应力的新方法。具体而言，在拟议的项目中，我们将研究的起源和管理策略，目前在硬PC系统中使用高度互补的沉积技术，确定其影响在operando涂层组件的性能，并开发基于实验室的方法来测量残余应力分布涂层零件。通过我们与工业合作伙伴的合作，我们的目标是在加拿大最重要的领域，特别是航空航天和制造业，加速实施新的PC沉积技术。

The development of protective coatings (PC) presents very important challenges and opportunities with a strong impact on sustainable development as well as significant economic and environmental benefits in many industrial sectors including aerospace, automotive, manufacturing, biomedical, mining, energy and others. Despite the progress in PC fabrication processes and coating architectures, the acceptance and further advances in this area are frequently limited by high residual stress in the coating systems, primarily related to the lack of fundamental and comprehensive knowledge of the stress generating mechanisms, their complex relation to the microstructure, and the availability of pathways to compensate for it, and even how to include it in the coating system design. In response to these technological challenges and goals, the FCSEL team at Polytechnique Montreal (PM), in collaboration with MDS Coating Technologies (MCT) and IHI Hauzer Techno Coating BV (Hauzer), proposes to investigate new approaches for the assessment and control of microstructure and stress in advanced protective coatings. Specifically, within the proposed project, we will study the origins and management strategies of residual stresses present in hard PC systems using highly complementary deposition techniques, determine their impact on in operando coated component performance, and develop laboratory-based methodologies to measure residual stress distribution in coated parts. Through our collaboration with our industrial partners, the goal is to accelerate implementation of new PC deposition technologies in areas of primary importance for Canada, especially in aerospace and manufacturing.