The　friction　wear　behaviors　of　316L　stainless　steel/Y-PSZ　(partially　yttria-stabilized　zirconia)　metal-ceramics　composites　fabricated　by　means　of　powder　metallurgy　were　evaluated　under　dry-sliding　condition　on　a　high-speed　block-on-ring　contact　wear　test　machine　MRH-3,　and　were　contrasted　to　those　of　T10　steel　(HRC　45).　The　effects　of　the　volume　fraction　(30%-50%)　and　particle　size　(10.8-51.6m)　of　316L　and　the　rotary　speed　(200-280　rmin-1)　of　the　friction　ring　on　the　wear　resistance　of　316L/Y-PSZ　composites　were　investigated.　The　results　show　that　the　wear　resistance　of　the　composites　decrease　with　the　increase　of　316L　content　and　particle　size,　or　with　the　increase　of　the　rotary　speed　of　the　friction　ring.　The　wear　resistance　of　fabricated　316L/Y-PSZ　composites　is　better　than　that　of　T10　steel　under　the　experimental　conditions　in　this　work　except　for　few　cases.　Furthermore,　the　wear　resistance　of　the　fabricated　316L/Y-PSZ　composites　with　a　316L　volume　fraction　of　30%　and　a　316L　particle　size　10.8m　is　3.0-3.2　times　as　large　as　that　of　T10　steel　under　the　experimental　conditions　in　this　work.　The　abrasion　mechanism　of　316L/Y-PSZ　composites　is　mainly　composed　of　the　desquamation　of　316L　particles　and　the　delamination　of　Y-PSZ　matrix.