Columbus recommend Loctite 9461 for their carbon back ends into alu front triangles.
You'll need some sort of insulating -glass fibre-?- layer between bare carbon and alu, or a good varnish layer to avoid galvanic corrosion...and also take account of the very different coefficients of expansion of carbon and alu.
Better try at email@example.com
...an excellent community of some of the world's best framebuilders.
They might be a bit sniffy about carbon -lots of trad steel guys- but there will be someone there who can help, maybe Landshark or Calfee.
All the best,
Pause, take a breath and ask yourself: "What would Rastamouse