Surface treatments are very common for MiM & MiM-Like parts, its aim is to improve functions and aesthetics.
All common surface treatments are compatible with MiM & MiM-Like parts such as steam oxidizing, coloring, plating, impregnating, dipping, or spraying.
The first step in selecting a surface modification is to determine the surface and substrate engineering property requirements, such as: - abrasion wear resistance under conditions of low or high compression loading:
- resistance to scuffing and seizure;
- bending or torsional fatigue strength;
- rolling contact fatigue;
- resistance to case cracking (surface collapse);
- resistance to corrosion.
The thickness of the engineered surface can vary from several millimeters for weld overlays to a few micrometers of physical or chemical vapor deposited coatings, while the depth of surface modification induced by ion implantation is < 0.1 mm.