ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
This paper has examined the room-temperature mechanical properties of La0.8Sr0.2Ga1−xMgxO3−δ (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 MPam1/2 was observed, whereas at x = 0.2, a value of 1.28 MPam1/2 was obtained.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.1998.tb02744.x
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