Skip to main content

In Situ Neutron Diffraction Study of a Liquid Nitrogen-Quenched Mg-PSZ Under Load: A Microcrack-Dominated System?

Buy Article:

$43.00 plus tax (Refund Policy)

The mechanical response of liquid nitrogen-quenched 9.4 Mg-PSZ in which the orthorhombic (o) phase is the major constituent (46 wt%) was investigated using in-situ neutron diffraction during uniaxial compression. The material remains elastic below 1 GPa with a Young's modulus of∼242 GPa, second highest of all zirconia-based materials and highest of all zirconia-based ceramics. Beyond 1 GPa, the material develops small plastic strains in a time-dependent manner (i.e., by room temperature creep) although the strains were generally much smaller than the unquenched material, which contains no o phase. As for standard Mg-PSZ, the creep was accompanied by a volume change usually indicative of tetragonal to monoclinic (m) phase transformation; however, the amount of m phase apparent in the neutron diffraction patterns increased only marginally. The magnitude of the volume increase could not be accounted for by the observed increase in the m phase and hence, microcracking is believed to be responsible for most of the volume change. There is some evidence for a small amount of o to m transformation at the detection limit of the phase analysis technique.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia

Publication date: 01 September 2005

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more