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Strength of Zirconium Diboride to 2300°C
Author(s) -
Neuman Eric W.,
Hilmas Gregory E.,
Fahrenholtz William G.
Publication year - 2013
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/jace.12114
Subject(s) - zirconium diboride , materials science , zirconium , ceramic , composite material , metallurgy , magnesium diboride , flexural strength , argon , hot pressing , critical current , superconductivity , chemistry , organic chemistry , physics , quantum mechanics
The strength of zirconium diboride ( ZrB 2 ) ceramics was measured up to 2300°C, which are the first reported measurements above 1500°C since 1970. ZrB 2 ceramics were prepared from commercially available powder by hot pressing. A mechanical testing apparatus capable of testing material in the ultra‐high temperature regime with atmosphere control was built, evaluated, and used. Four‐point bend strength was measured as a function of temperature up to 1600°C in air and between 1500°C and 2300°C in argon. Strength between room temperature and 1200°C was ~390 MPa, decreasing to a minimum of ~170 MPa between 1400°C and 1500°C, with strength increasing to ~220 MPa between 1600°C and 2300°C.