A slurry injection process to coat internal cooling passages of turbine blades was studied based on the ASL-5 water-based and diffusion type slurry Al-Si coating process employed for external surface protection.

• 以用于空心叶片外表面的ASL－5水溶性扩散型料浆铝－硅涂层工艺为基础，研究了叶片内孔道料浆注入防护工艺。