Factors Affecting the Adhesion of Titanium and Molybdenum Couples

• DOI: 10.1116/1.1492532
• Publication Date: 2002-07-27T09:34:24Z
• Authors: K. I. Johnson; D. V. Keller

Metallic-adhesion experiments reported in the literature have shown that softer metal couples could weld more easily than harder, and of hexagonal atomic structure are difficult to those cubic structure. Because presence contamination all these studies, however, it has not been clear whether tendencies intrinsic properties metals, or simply due a difference sensitivity materials such contamination. Previous studies by authors principal barrier adhesion between soft metals at room temperature is solely This work presently extended high hardness, molybdenum-molybdenum couple, couple structure, titanium-titanium. Both were found be most prepare with ultraclean surfaces; when this was accomplished, cold welding observed approximately one-half bulk strength titanium one-quarter molybdenum, respectively. The greater difficulty encountered pressure harder structures, effects, an inherent property materials. A few layers contaminant sufficient prevent under lightly loaded conditions. Contact resistance demonstrated as useful tool for estimation degree cleanliness surfaces.