Abstract
The crack initiation threshold F c , which is determined using the Vickers indentation technique, was used to estimate abrasion strengths of different fused alumina abrasive grains. Assuming Weibull distributed strength, the dependence of the crack initiation probability on the indentation load F according to F − 1 4 was verified. The crack initiation thresholds of Al 2O 3 crystals correlate with the strengths of the abrasive grains which were determined by static and dynamic methods. The contents of chromium, iron, manganese and titanium in the alumina crystals were estimated by electron paramagnetic resonance and energy dispersive X-ray spectrometry measurements; the results indicate that the crack initiation thresholds are not essentially determined by these impurities.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call