- Deposits have low internal stress and are very ductile.
- Near-zero linear thermal expansion in plated alloy films.
- Surfaces are uniform and smooth with well-controlled thickness and excellent uniformity.
- Qualified bath metrology for replenishment and a long shelf life.
Electroplated Invar film (5-10 μm thickness) properties:
1. Density: 8.1 g/cm
32. Composition: 64 wt% Fe, 36 wt% Ni
3. Linear thermal expansion: 0.4 ± 0.1 * 10
-6 K
-14. Specific heat copacity at 573K: 0.45 ± 0.05 J/gK
5. Thermal conductivity: 43 ± 5 W/mK
6. Internal stress: 30 ± 2 MPa
7. Tensile strength: 500 ± 60 MPa
8. Yield strength: 280 ± 50 MPa
9. Ductility: 40 ±10 %