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Abstract

The fracture properties of several nuclear waste glasses were determined by indentation techniques. The fracture toughness, K-Ic, was calculated from the measurement of radial cracks around Vickers diamond indentations as a function of applied load, and the results agree quite satisfactorily with values obtained by the Hertzian indentation technique. The fracture toughness of the waste glasses containing simulated fission products ranged from 0.9 to 1.1 MN m**-3/2 in air, with slightly higher values measured in dry nitrogen. The hardness was also obtained from the Vickers indentations and the ratio H/E was determined from the elastic recovery of Knoop diamond indentations. The value of E deduced from H and H/E were within 15 % of values measured by ultrasonic tests. The results along with the limitations of the different techniques are discussed in detail.

Additional information

Authors: WEBER W J, JRC KARLSRUHE ESTAB. (GERMANY);ARGONNE NATIONAL LABORATORY (USA);MATZKE HJ, JRC KARLSRUHE ESTAB. (GERMANY);ARGONNE NATIONAL LABORATORY (USA);ROUTBORT J L JRC KARLSRUHE ESTAB. (GERMANY), JRC KARLSRUHE ESTAB. (GERMANY);ARGONNE NATIONAL LABORATORY (USA);ARGONNE NATIONAL LABORATORY (USA), JRC KARLSRUHE ESTAB. (GERMANY);ARGONNE NATIONAL LABORATORY (USA)
Bibliographic Reference: JOURNAL OF MATERIALS SCIENCE, VOL. 19 (1984), PP. 2533-2545
Record Number: 1989123030500 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en