Uuder the impact of sand particles, the erosion wear is initiating crack, propagating and eventually causing spalling of the coating.

• 涂层的冲蚀磨损失效机制为在磨粒的冲击下，涂层首先产生裂纹，裂纹沿弱结合处扩展最终导致涂层粒子剥落。