Comparison of the mechanical properties of nitrogen ion implantation and micro-pulsed plasma nitriding techniques of Cr-Ni alloy


Tek Z., Gungor M., Cal E., Sonugelen M. , Artunc C., Oztarhan A.

SURFACE & COATINGS TECHNOLOGY, cilt.158, ss.157-163, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 158
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0257-8972(02)00192-5
  • Dergi Adı: SURFACE & COATINGS TECHNOLOGY
  • Sayfa Sayıları: ss.157-163

Özet

Cr-Ni alloys are frequently used in dentistry for economical reasons. While they gain popularity, an increase in systemic and local concerns of these dental metals is observed. With the progressions in surface technology, the surface characteristics of the metals can be changed. In this study, nitrogen ion (N ion) implantation and plasma nitriding techniques were used to change the properties of Cr-Ni alloy (Wirollay). Nitrogen implantation at dose 1 X 10(17) ion/cm(2) and micro-pulsed plasma nitriding techniques were applied to Cr-Ni alloy samples. After the process, the friction coefficient was decreased in ion implantation, but this ratio was increased in the plasma nitriding technique with respect to the substrate. The roughness did not change after N ion implantation but it increased after the plasma nitriding procedure. Wear volume of the implanted and plasma nitriding samples were lower than the substrate. Hardness values were increased four times for N ion implantation and eight times for the plasma nitriding technique. (C) 2002 Elsevier Science B.V. All rights reserved.