DIADEM – Electroless nickel diamond-dispersion
Your contact for DIADEM – Electroless nickel diamond-dispersion
delivery information
Fabienne Sommer
+41 (0)52 369 70 69
technical service
Roger Stübi
+41 (0)52 369 70 67
r.stuebi@demartin.com
Ulrich Götz
+41 (0)52 369 70 05
u.goetz@demartin.com
Robert Isenring
+41 (0)52 369 70 07
r.isenring@demartin.com
I. Dispersion layers with diamond deposits are used as extremely high-grade wear protection layers in order to improve their characteristics with respect to tribology. They distinguish themselves by several interesting properties:
- Excellent wear protection
- High matrix hardness of approx. 1,200 HV
- Excellent thermal conductivity
- Good corrosion protection
- Diamond content of up to 40 percent by vol.
- Diamond grain diameter selectable from 0.010-0.050 mm
- Low friction coefficient
- Resistance against chemical loading
- Temperature resistance up to 500 °C
- Dimensionally accurate deposition with a layer thickness tolerance of +/- 8 %
DIADEM Matrix
DIADEM Oberfläche, fotographiert
Our coating options:
- Up to a length of 500 mm
- Component weight up to 15kg
- Coatable materials: Steel, stainless steel, non-ferrous metal, aluminum, titanium
II. Application areas
| Industry | Component types |
|---|---|
| Tool and mold making | Anti-friction applications |
| Textile machine industry | Wear components |
| Print/ paper machine industry | Wear components |
| General machine industry | Hydraulic pumps, diverse components |
| Food industry (LINK) | Worm gears, wear components |
| Chemical industry | Pump systems |
| Defense industry | Piston rods, cylinders |
III. Recommendations, constructive comments
DIADEM layers are ideally deposited with a layer thickness of 0.020-0.050 mm. Thinner layers cannot withstand the wear requirements.
Through-going threads and boreholes are always coated as well. This should be considered in advance. Unless otherwise indicated, components are always completely coated.
Furthermore, the following specifications should be provided when delivering components:
- Coating surfaces
- Surfaces, which must be coated.
- Surfaces, which may be coated.
- Surfaces, which may not be coated.
- Material specifications / surface conditions
- Heat treatment condition / required layer hardness
- Layer type
- Layer thickness
- Surface roughness after coating
- Clamping / contact points (e.g. threads, pins, boreholes, etc.)
- Component drawing / drawing number
- Test criteria, test surfaces