Crack initiation threshold as a parameter for characterizing fused alumina abrasive grains

摘要: Abstract The crack initiation threshold Fc, which is determined using the Vickers indentation technique, was used to estimate abrasion strengths of different fused alumina abrasive grains. Assuming Weibull distributed strength, dependence probability on load F according − 1 4 verified. thresholds Al2O3 crystals correlate with grains were by static and dynamic methods. contents chromium, iron, manganese titanium in estimated electron paramagnetic resonance energy dispersive X-ray spectrometry measurements; results indicate that are not essentially these impurities.