Akademik Veri Yönetim Sistemi
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, sa.4, ss.2123-2131, 2014 (SCI-Expanded)
Structure and adhesion properties of TiAlCrNbN coatings were investigated. These coatings were deposited onto AISI H13 steel substrate using pulsed dc closed field unbalanced magnetron sputtering at different deposition parameters including duty cycle, bias voltage, and working pressure. The coatings have been characterized by X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. The TiAlCrNbN-graded composite coatings have a dense and columnar structure. The X-ray diffraction patterns of coatings exhibited predominantly c-TiAlCrN, h-NbN, and h-TiAlN reflections. Scratch resistance test showed that the highest adhesion strength was attained as 68 N at 2.5 mu s duty time, 100 V bias voltages, and 3 x 10(-3) Torr deposition parameters. The lowest adhesion strength was obtained as 55 N at 0.5 mu s duty time, 50V bias voltage, and 2 x 10(-3) Torr deposition parameters.