Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
Influence of oxygen content and structural defects on low-temperature mechanical properties of high-temperature superconducting single crystals and ceramics
Репозиторій DSpace/Manakin
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Influence of oxygen content and structural defects on low-temperature mechanical properties of high-temperature superconducting single crystals and ceramics
Тема:
Низкотемпературная физика пластичности и прочности
Інший ID:
PACS: 74.25.L, 81.70.D
Посилання:
Influence of oxygen content and structural defects on low-temperature mechanical properties of high-temperature superconducting single crystals and ceramics / S.V. Lubenets, V.D. Natsik, L.S. Fomenko, H.J. Kaufmann, V.S. Bobrov and A.N. Izotov // Физика низких температур. — 1997. — Т. 23, № 8. — С. 902-908. — Бібліогр.: 42 назв. — англ.
Підтримка:
This study was supported by the Ukraine State Committee for Science and Technology (Project 09.01.01/033-92 «Material»). The authors take the opportunity to express their gratitude to Mrs. A. I. Filatova for help in the preparation of this paper.
Дата:
1997
Переглядів:
272
Завантажень:
244
Анотація:
The data for the microhardness and fracture toughness of Y–Ba–Cu–O and Bi-based single crystals and ceramics in the temperature range 77–293 K are presented and analyzed. Our study reveals that the microhardness of high temperature superconductors is very sensitive to the oxygen stoichiometry, the phase composition, the temperature, and to the microstructural defects such as impurities, intergranular boundaries, and voids. Attention is drawn to the anisotropy of the micromechanical properties and to the features of the fracture in the vicinity of the indentation. The data available on the plasticity of Y–Ba–Cu–O and Bi–Sr–Ca–Cu–O from micro- and macrotests are compared.
