• Siradj, Eddy Sumarno
• Suprapto, Suprapto
• Setiawan, Ridwan
• Suprihatin, Hari
• Sujitno, Tjipto

Abstract

<jats:p>This study observed the results of plasma nitrocarburizing processes on JIS SKD61 Steel. This research aims to use a plasma nitrocarburizing process to increase the hardness and wear resistance of JIS SKD61Steel. Before plasma nitriding was carried out, the sample had undergone a pre-treatment process. The optimum hardness value obtained after the pre-treatment process was 504 HV. The optimum hardness obtained in the plasma nitrocarburizing sample was 830 HV at temperatures 500°C for 4 hours. The optimum wear resistance or specific wear results on plasma nitrocarburizing was 0.11 x10<jats:sup>-6</jats:sup>mm<jats:sup>2</jats:sup>/kg at temperatures 400°C for 4 hours and 0.08 x10<jats:sup>-6</jats:sup>mm<jats:sup>2</jats:sup>/kg at temperature 500°C for 4 hours. XRD test results show that the phase formed in the nitrocarburizing compound layer was the iron nitride, iron carbonitride FeN, FeN<jats:sub>0.49</jats:sub>, ε-Fe<jats:sub>2-3</jats:sub>N, or ε-Fe<jats:sub>2-3</jats:sub>(N,C). The process of plasma nitrocarburizing has improved the mechanical properties of hardness and wear resistance of SKD61 steel.</jats:p>

Topics

• compound
• phase
• x-ray diffraction
• wear resistance
• nitride
• steel
• hardness
• iron