Changes

of relevant process parameters and by sampling of finished products.

Despite optimized brazing parameters non-wetted defect areas in the braze

joint cannot be avoided completely. These wetting defects can mostly be traced

non-destructive methods.

Destructive tests can be performed on a sampling basis in rather simple ways:

*Shear test <br />The contact tip is sheared off from the carrier with the required shear force being a measure for the bond quality. This method is especially suitable for hard and brittle contact tip materials such as for example tungsten.<br />

Typically the non-destructive testing of braze joints requires more elaborate test

equipment. Besides this such test methods have limitations regarding the