(under subclass 262.1) Process for bonding a work article, the greatest percentage of which is a relatively hard-to-fuse metal, to another or like material.
(1) Note. The work article of this subclass may be considered to be refractory metal "based."
(2) Note. Refractory metals have the highest melting points and the lowest vapor pressures of all metals. Hafnium (Hf), molybdenum (Mo), niobium (Nb) (also known as columbium (Cb)), rhenium (Re), tantalum (Ta), titanium (Ti), tungsten (W), zirconium (Zr), vanadium (V), and base alloys of such are considered to be refractory metals. Other materials may be refractory metals in certain uses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
262.5+, for fusion bonding of aluminum (Al) (which in some ways is similar to a refractory metal); or for fusion bonding of any of a group of (refractory) metals including aluminum.
