Effect of hydrochloric acid environment on strength and fracture toughness of alumina ceramics

Effect of hydrochloric acid on subcritical crack-growth velocity exponent for various alumina-base ceramics is studied. A dynamic fatigue technique is utilized. It is revealed that high-purity magnesia-doped alumina ceramics are much more susceptible to fatigueing in acidic environment compared to the yttria-alumosilacate glass-bonded alumina.