What's the best way to fix carbon to titanium?
I found this answer for you on this forum:


  Henkel/Loctite's Hysol series and 3M's Scotch-Weld epoxies are good choices.  Surface preparation is critical.  Review standards on this subject for best practices: ASTM D 2651 Standard Guide for Preparation of Metal Surfaces for Adhesive Bonding and ISO 17212 Structural adhesives -- Guidelines for the surface preparation of metals and plastics prior to adhesive bonding.


These two links were also included:


Standard Guide for Preparation of Metal Surfaces for Adhesive Bonding
Structural adhesives -- Guidelines for the surface preparation of metals and plastics prior to adhesive bonding