VEHICLE PISTON RING HAVING A NANO MULTILAYERED COATING LAYER FOR IMPROVING FUEL EFFICIENCY AND INCREASING WEAR LIFETIME THEREOF

摘要

PURPOSE: A vehicle piston ring having a nano multilayered coating layer is provided to form the same with a Cr or Ti buffer layer, a CrN or Ti(C)N intermediate layer, a TiAlN/CrN first nano multilayer, and a TiAlCN/CrCN second nano multilayer, thereby simultaneously securing a heat resistance at over 600°C, a wear resistance, and a low frictional property.;CONSTITUTION: A vehicle piston ring having a nano multilayered coating layer includes a Cr or Ti buffer layer, a CrN or Ti(C)N intermediate layer, a TiAlN/CrN first nano multilayer, and a TiAlCN/CrCN second nano multilayer. The Cr or Ti buffer layer is coated on a base material for the piston ring. The CrN or Ti(C)N intermediate layer is coated on the Cr or Ti buffer layer. The TiAlN/CrN first nano multilayer is coated on the CrN or Ti(C)N intermediate layer. The TiAlCN/CrCN second nano multilayer as a most outer layer is coated on the TiAlN/CrN first nano multilayer.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Basic material; (BB) Total thickness of a coating layer : 0.31-25.5um