Taber Rotary Abrasion Properties of Mg Matrix SiC, B4C Reinforced Composites Prepared by Ball Milling

Dağaşan Bulucu E., Akay S.

BALKANTRIB’24 11th INTERNATIONAL CONFERENCE ON TRIBOLOGY, 26 - 28 Eylül 2024, ss.1-9, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Sayfa Sayıları: ss.1-9
  • Erciyes Üniversitesi Adresli: Evet

Özet

The present study discusses about wear properties of Mg based ceramic particulate composites reinforced via ball milling.  SiC/B4C are introduced into the magnesium matrix at different percent weights by using a planetary type ball mill with WC media.  Milling parameters like rotating speed, milling time, Ball-to-Powder ratio (BPR) and Process Control Agent (PCA) are kept constant as 200 rpm, 4 hrs, 10:1 and % 1.5 wt. stearic acid, respectively. Powder samples taken from the composite mixture at certain times are analysed by FESEM and XRD. Then cylindrical composite specimens are prepared by cold pressing and subsequent sintering. Subsequently, pressed and sintered composites are analysed by means of porosity, density, microstructure and microhardness. Taber rotary abrasion tests are conducted at different speeds including 60 and 72 rpm under a load of 125 gr. As a result, we can sum up that ball milling process produces fine and homogeneous structures. A significant improvement in wear resistance is also observed.