a surface layer made of {HEAD ~ an alloy} formed on said base member, {TAIL ~ 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 said base member , { TAIL ~ 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 OTH OTH OTH OTH OTH OTH 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