My MFA thesis was on the fun and joy of getting gold to stick to
titanium mechanically. The short answer is you can't do it with
The only ways that work (short of plating and laser welding) are
mechanical. The easiest is essentially a sort of damascene technique.
It works, but it has a very definite surface texture, and it's a bit
sensitive to wear. It's great for collection pieces, but would be
lousy for daily wearable stuff.
I've been meaning to dump my thesis into a PDF, If you're really
interested, contact me directly, and I'll see what I can do.