Mechanical properties of solid-state-synthesized strontium- and magnesium-doped lanthanum gallate
SCIE
SCOPUS
- Title
- Mechanical properties of solid-state-synthesized strontium- and magnesium-doped lanthanum gallate
- Authors
- Sammes, NM; F. Michael Keppeler; Helfried Na¨fe; Fritz Aldinger
- Date Issued
- 1998-12
- Publisher
- WILEY
- Abstract
- This paper has examined the room-temperature mechanical properties of La0.8Sr0.2Ga1-xMgxO3-delta (x = 0.1-0.2) that was synthesized by using a solid-state technique. The modulus of rupture (MOR) was measured over the range of x = 0.1-0.2 and decreased as the B-site dopant content increased. At x = 0.15, for example, the MOR Was 139 +/- 17 MPa, whereas at x = 0.2, an MOR value of 113 +/- 8 MPa was observed. This decrease is postulated as being caused by the increased lattice stress due to the increased magnesium concentration on the B-site, The fracture toughness of the sample decreased as the magnesium content increased; at x = 0.15, a fracture toughness of 1.63 +/- 0.2 MPa . m(1/2) was observed, whereas at x = 0.2, a value of 1.28 MPa . m(1/2) was obtained.
- Keywords
- PEROVSKITE-TYPE OXIDE; LAGAO3 PEROVSKITE; CONDUCTIVITY; ELECTROLYTE; CERIA
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15358
- DOI
- 10.1111/J.1151-2916.1998.TB02744.X
- ISSN
- 0002-7820
- Article Type
- Article
- Citation
- Journal of the American Ceramic Society, vol. 81, no. 12, page. 3104 - 3108, 1998-12
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