Sputtering of Annealed Reed Blades
The Sputtering of the contact area of reed blades is one of the most important steps that gives a reed switch its electrical contact stability and reliability. Reed blades are loaded into special jigs that are loaded into the sputtering chamber which is evacuated to high level vacuum and the contact area of the reed blades are coated with Ruthenium using a process called vacuum deposition. The coated reed blades are then inspected for thickness uniformity and surface roughness using an Angstrom meter. After the contact sputtering process, reed blades undergo a surface burn-off bake-out treatment.