Abstract
To improve wear resistance of titanium in short time, we propose a new surface nitriding method. Commercially pure titanium was nitrided using a vacuum atmospheric-controlled induction heating fine particle peening (AIH-FPP) treatment system, and its surface properties were evaluated. The treatment system is able to blow a gas and shoot fine particles at high speed in a controlled atmosphere with an oxygen concentration of less than 10 ppm. In this treatment, the substrate is heated to a higher temperature by high frequency induction heating. In this study, the treatment was performed under a nitrogen atmosphere at 900°C for 3 minutes. The formation of the nitrided layer on the titanium surface was accelerated by nitrogen gas blow and the wear resistance was improved. Specimens treated with peening showed a reduced thickness of the nitrided layer as a result of erosion.
