A single-tube Coriolis mass flow sensor includes a stainless steel sleeve having an unplated interior surface and a titanium member having a cylindrical end inserted into the stainless steel sleeve. The exterior surface of the titanium cylindrical end forms a joint with the unplated interior surface...http://www.google.es/patents/US6698644?utm_source=gb-gplus-sharePatente US6698644 - Use of silver-copper-palladium brazing alloys