Erosion occurs when particles or fluids impinge upon a surface. There are two main types:

• High Angle Erosion, where much of the energy is expended in deformation of the surface. It requires a resilient coating, often elastomeric.
• Low Angle Erosion, where the action is more akin to abrasion and cutting. It requires a hard surface to reduce the wear rate.

In general, the rate of wear is proportional to the cube of the impact velocity, as well as being related to the number of particles, their hardness, shape (sharpness) and size.

• To reduce low angle erosion, treat the problem in the same way as High Stress Abrasion
• To reduce high angle erosion it is best to select tough, thick coatings, usually thermally sprayed or by weld overlay.

Click below for some specific coatings to deal with high angle erosion.

• Apticote 800 Thermally Sprayed ceramics and cermets

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Production facilities in Cardiff & Gloucester and in Wisconsin. USA.