Abstract
Elastic moduli of both as-hot-pressed and oxygenated YBa2Cu3Ox were measured, under isostatic pressures up to 1 GPa, using a combination of strain gage and ultrasonic techniques. Pressurization of the as-hot-pressed samples caused no significant change in moduli; however, pressurization of the oxygenated sample produced a 5-fold increase in bulk modulus. The results show that the significant decreases in moduli between the as-hot-pressed and the oxygenated state were due to extensive microcracking, of an extremely fine nature, that occurred during the oxygenating sequence.
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Holcomb, D.J., Mayo, M.J. Effect of microcracking on the measured moduli of bulk YBa2Cu3Ox. Journal of Materials Research 5, 1827–1833 (1990). https://doi.org/10.1557/JMR.1990.1827
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DOI: https://doi.org/10.1557/JMR.1990.1827