A protective coating system includes a nickel aluminum zirconium alloy coating having beta phase nickel aluminum and {HEAD ~ at least one phase} selected from {TAIL ~ gamma phase nickel} and the gamma prime phase nickel aluminum 
A protective coating system includes a nickel aluminum zirconium alloy coating having beta phase nickel aluminum and { HEAD ~ at least one phase } selected from { TAIL ~ gamma phase nickel } and the gamma prime phase nickel aluminum
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH