Transition of Wear Mechanisms of Plasma Source Nitrided AISI 316 Austenitic Stainless Steel Against Ceramic Counterface

摘要: A single high-nitrogen face-centered-cubic (f.c.c.) phase (γN ) layer formed on the plasma source nitrided AISI 316 austenitic stainless steel at a nitriding temperature of 450 °C for time 6 h. An approximately 17 μm-thick γN has peak nitrogen concentration about 20 at. %. Tribological properties ball-on-disk tribometer against an Si3 N4 ceramic counterface under normal load 2 and N with sliding speed 0.15 to 0.29 m/s were investigated by friction coefficient specific wear rate measurement. Worn surface morphology debris characterized using scanning electron microscopy (SEM) transmission (TEM), respectively. The microhardness was measured as 15.1 GPa. change in dependent applied load, which associated that rate. Under lower N, obtained 2.8 × 10−6 mm3 /N m 0.60. higher 7.9 0.80. When increased from transition mechanisms oxidative abrasive found, derived oxidation reaction h.c.p. martensite transformation during tests,