Articles
  • Effect of microstructure on the tribological properties of apatite-wollastonite glass ceramic
  • Jong-Ee Parka, Abdullah Öztürka, Sang-Hee Youb, Sam-Sik Parkb, Won-Tae Baeb and Dong-Woo Shinb,*
  • a Middle East Technical University, Metallurgical and Materials Engineering Department, Ankara 06531, Turkey b Division of Advanced Material Science and Engineering, Engineering Research Institute Gyeongsang National University, 900 Gajwadong, Jinju 660-701, Korea
Abstract
A relationship between microstructure and the tribological properties of Apatite-Wollastonite glass ceramics (A-W GC), fabricated by different techniques of melt casting and powder packing processing, was studied. The surface crystallization of wollastonite caused a unique surface strengthening in an A-W GC prepared by the melt casting process. The wear rate did not vary between the free surface and interior in an A-W GC made by the powder packing process, whereas an increase of the wear rate with an increase in the distance from the free surface was detected in an A-W GC fabricated by the melt casting process. However, the melt casting process resulted in a higher wear resistance in an A-W glass ceramics for prosthetic applications.

Keywords: Tribology, Apatite-Wollastonite, Glass ceramic, Melt casting, Powder packing.

This Article

  • 2008; 9(3): 230-233

    Published on Jun 30, 2008