Coursen Coating Labs Inc.
has introduced coatings as thin as 0.30 µm to its line of solderable coatings for glass and ceramic substrates. The coatings have applications in missiles, fiber optics, aerospace and passive IR detectors, and are suitable for the hermetic sealing of optical systems. These applications often require glass or other substrates to be soldered into a metal package. Since glass normally cannot be soldered, the specialized coatings are applied to the exterior edge of a window, enabling the conventional soldering process.
These proprietary multi-layer systems are designed specifically for use as a solderable coating for glass, ceramic, and infrared substrates. These films are deposited at less than 200 degrees Celsius which makes them suitable for use on most electronic and infrared optical materials. In addition, solderable coatings can also be deposited in a frame pattern around a window that is to be soldered onto a metal package. Our films have demonstrated excellent adhesion, and have survived destructive solderpot and cryogenic testing.