Can PMTI help define an approach to joining “un-weldable” materials?
A. Yes, PMTI’s technical staff has over 40 years of experience in developing welding, brazing, soldering, diffusion bonding and reactive bonding processes to solve challenging joining requirements. Examples include: brazing of graphite to niobium carbide in a nuclear rocket engine core; inert atmosphere reflow soldering of thermal shock and oxidation susceptible compound semiconductor components in thermoelectric heat pumping modules; metallization and brazing of alumina ceramics to refractory metal components in thermionic energy conversion cells; and reflow vacuum brazing of multi- component molybdenum assemblies originally intended to have been welded until welding proved to be unachievable.
