Abstract
The impact of thin Cr-rich (Cr,Al)2O3 layers on the stabilisation of Al-rich (Al,Cr)2O3, (Al,Cr,Fe)2O3, (Al,Cr,Si)2O3, and (Al,Cr,B)2O3 coatings in the hexagonal corundum-type (α) structure through a multilayer architecture was investigated. We show that even for typically fine-grained cubic-dominated Si- or B-alloyed Al-rich (Al,Cr)2O3 coatings, the α phase can be stabilised through a multilayer architecture with α-structured Cr-rich (Cr0.78Al0.22)2O3 seed layers. Using (Cr,Al)2O3/(Al,Cr,B)2O3 multilayers with larger bilayer periods we show that efficiency of such stabilisation depends on the bilayer period. However, the mechanical properties of our multilayers are next to the overall α phase content also significantly influenced by their growth morphology.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
