Oxygen nonstoichiometry, crystal structure and mechanical properties of La2NiO4+δ

T. Nakamura, Y. Takeyama, S. Watanabe, K. Yashiro, K. Sato, T. Hashida, J. Mizusaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

Crystal structure and mechanical properties of La2NiO 4+δ were measured by high temperature X-ray diffractometry and in-situ small punch test as a function of temperature and oxygen partial pressure. As P(O2) increases, the lattice parameter perpendicular to the perovskite layer increases and that parallel to the layer slightly decreases, and the lattice volume slightly increases. Apparent and true thermal expansion coefficients were calculated from the variation of the lattice constants. The elastic modulus and the fracture strength become larger at higher P(O2) condition. This may be caused by the structural change due to excess oxygen.

Original languageEnglish
Title of host publicationECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
Pages2573-2580
Number of pages8
Edition2 PART 3
DOIs
Publication statusPublished - 2009 Dec 1
Event11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria
Duration: 2009 Oct 42009 Oct 9

Publication series

NameECS Transactions
Number2 PART 3
Volume25
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
Country/TerritoryAustria
CityVienna
Period09/10/409/10/9

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint

Dive into the research topics of 'Oxygen nonstoichiometry, crystal structure and mechanical properties of La<sub>2</sub>NiO<sub>4+δ</sub>'. Together they form a unique fingerprint.

Cite this