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Title: Measurement of O and Ti atom displacements in TiO 2 during flash sintering experiments

In-situ flash experiments on rutile TiO 2 were performed at the synchrotron at the Brookhaven National Laboratory. Pair distribution function analysis of total X-ray scattering measurements yielded mean-square atomic displacements of oxygen and titanium atoms during the progression of the 3 stages of flash. The displacements are measured to be far greater for oxygen atoms than for titanium atoms. Thus, these large displacements may signal an “elastic softening” of the lattice, which, recently, has been predicted as a precursor to the onset of flash.
ORCiD logo [1] ;  [1] ; ORCiD logo [1] ;  [1] ;  [2] ;  [3] ; ORCiD logo [4]
  1. Univ. of Colorado, Boulder, CO (United States). Materials Science and Engineering Program and Dept. of Mechanical Engineering
  2. Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II). Energy Sciences Directorate/Photon Science Division
  3. Oklahoma State Univ., Tulsa, OK (United States). School of Materials Science and Engineering
  4. Univ. of Illinois, Urbana, IL (United States). Dept. of Materials Science and Engineering
Publication Date:
Report Number(s):
Journal ID: ISSN 0002-7820
Grant/Contract Number:
SC0012704; N00014‐15‐1‐2505; W911NF‐17‐1‐0142; AC02-98CH10886
Accepted Manuscript
Journal Name:
Journal of the American Ceramic Society
Additional Journal Information:
Journal Volume: 101; Journal Issue: 5; Journal ID: ISSN 0002-7820
American Ceramic Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); US Dept. of the Navy, Office of Naval Research (ONR); US Army Research Office (ARO)
Country of Publication:
United States
36 MATERIALS SCIENCE; sinter; sintering; spark plasma sintering; X-ray methods
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1415153