As with the refractory metal in the first coating, the metal, if present, may be in {HEAD ~ the form} of {TAIL ~ particulate metal} or atomically dispersed metal or both 
of
As with the refractory metal in the first coating , the metal , if present , may be in { HEAD ~ the form } of { TAIL ~ particulate metal } or atomically dispersed metal or both
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH