Dear Ramom,

Unfortunately, practically there is no way to improve "adhesion" between the ceramic particles of Al2O3 and the metal matrix of FeCr. They will work like a composite and the best method to improve mechanical properties is by using mechanical alloying techniques.

In case you promote the reaction with the particles by reduction of the Al2O3 you surely promote the formation of some other oxides inside the alloy by destroying the original perticles.

Kind regards

Dear Professor Juan, 

Thanks for the answer. 

Indeed, I´ve seen in some works the adition of Ti or Ni on the ceramic preform. I believe that this solution works when small ceramic particles (

select preheating temperature, preheat the aluminium oxide particulate by 300 degree centigrade. to improve wettability.