I need to attach a forged aluminum part (landing gear mounting bracket) to a bulkhead made of 4130 steel, probably with bolts, but I may decide to rivet it.

What are the standard practices used in the aviation industry to prevent corrosion in this situation? Any type of non conductive material put between the 2 parts would be subject to some fatigue, and there will still be conductivity at the bolt/rivet holes.