Modern gas turbines rely on ceramic coatings to protect structural components along the hot gas path. These coatings are susceptible to accelerated degradation caused by silicate deposits formed when ingested environmental debris (dust, sand, ash) adheres to the coatings. This article reviews the current understanding of the deposit-induced failure mechanisms for zirconia-based thermal barrier coatings and silicate environmental barrier coatings. Details of the debris melting and crystallization behavior, the nature of the chemical reactions occurring between the deposits and coatings, and the implications for the thermocyclic durability of the coatings are described. Given the challenges posed in understanding how prospective coating materials and architectures will respond to a broad range of deposit compositions, it is proposed to develop an integrated framework linking thermochemical and thermomechanical models to predict coating durability. Initial progress toward developing this framework, and the r...

中文翻译：

---

燃气轮机工程涂层的硅酸盐沉积物降解：模型和材料解决方案的进展

现代燃气轮机依靠陶瓷涂层来保护沿热气路径的结构部件。当摄入的环境碎片（灰尘、沙子、灰烬）粘附在涂层上时，这些涂层容易受到由硅酸盐沉积物引起的加速降解。本文回顾了目前对氧化锆基热障涂层和硅酸盐环境屏障涂层的沉积引起的失效机制的理解。描述了碎片熔化和结晶行为的细节、沉积物和涂层之间发生的化学反应的性质以及对涂层热循环耐久性的影响。鉴于在理解预期涂层材料和结构将如何响应广泛的沉积物成分方面面临的挑战，建议开发一个连接热化学和热机械模型的集成框架，以预测涂层耐久性。开发该框架的初步进展，以及...