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Creep Behavior of Single Crystals of Vanadium‐Doped Forsterite
Author(s) -
RICOULT D. L.,
KOHLSTEDT D. L.
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb07339.x
Subject(s) - forsterite , vanadium , creep , materials science , doping , activation energy , mineralogy , exponent , partial pressure , oxygen , analytical chemistry (journal) , metallurgy , chemistry , linguistics , philosophy , optoelectronics , chromatography , organic chemistry
Vanadium‐doped forsterite single crystals have been crept at atmospheric pressure, at temperatures ranging from 1571 to 1923 K under controlled oxygen partial pressure, po 2 . In the absence of an oxide buffer, the creep strength, the activation energy (550 ± 100 kJ/mol), the stress exponent (3.5 ± 0.5), and the po 2 exponent (1/8 to 1/4) for this material are similar to those for unbuffered iron‐bearing olivine. At po 2 = 10 ‐11 MPa and T = 1773 K, the strength of vanadium‐doped forsterite is slightly larger than that of undoped forsterite.