| Title |
Research Paper - Mechanical Behavior - : High Temperature Wear Resistance of Compounds Synthesized by Plasma Diffusion Process |
| Authors |
김상식(Sang S . Kim); 김창우(Chang W . Kim); 이상율(Sang Y . Lee); 한전건(Jeon G . Han) |
| Abstract |
Thermal resistant compound layer has been synthesized on hot working tool steel(SKD61) using plasma diffusion process a subsequent diffusion treatment after deposition. Ti and Al layers (Ti, Ti/Al and Ti/Al/Ti) were deposited on the steel substrate followed by diffusion-treatment with intense plasma heating through hollow cathode discharge effect at partial pressures of 1 torr to 2.5 torr of N₂ and H₂ mixture. Plasma diffusion at temperature range of 550℃ to 950℃ produced various intermetallic compounds of Fe₃Al and Fe₂Ti as well as nitride compounds of TiN and TiAlN at interface and surface. Compound formation enhanced surface hardness up to 3000Hk(0.1N). High temperature wear resistant also greatly increased at temperature range of 300℃ to 600℃ due to the thermal resistant compounds layer formation. Details of structure and high temperature wear behavior will be discussed with XRD, EDS and other analytical data. |