a surface layer made of {HEAD ~ an alloy} formed on {TAIL ~ said base member}, said surface layer having a slide surface for a mating member, and wherein said surface layer is comprised of: 
a surface layer made of { HEAD ~ an alloy } formed on { TAIL ~ said base member } , said surface layer having a slide surface for a mating member , and wherein said surface layer is comprised of :
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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