wherein {HEAD ~ the specific microstructural portion} is present in {TAIL ~ a first plurality} of particles which are provided with a casing where the specific microstructural portion is aluminum or aluminum and chromium and the casing consists of a metal or a metal oxide, 
is present in
wherein { HEAD ~ the specific microstructural portion } is present in { TAIL ~ a first plurality } of particles which are provided with a casing where the specific microstructural portion is aluminum or aluminum and chromium and the casing consists of a metal or a metal oxide ,
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH