Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1573636 | Materials Science and Engineering: A | 2016 | 9 Pages |
Abstract
Microstructural evolution and mechanical properties of Ba0.5Sr0.5(Co0.8Fe0.2)1âXNiXO3âδ with X=0, 2, 4, 6, 8, 15, 20, and 25 mol% have been systematically investigated. The porosity increases from 4.0% to 17% with increasing the content of Ni doping from 0 to 25 mol%. Meanwhile, the grain size decreases from 22.5 to 5 µm. All the samples are indexed to be a single cubic phase when the Ni doping content is below 25 mol%. Otherwise, secondary phases (NiO) are found along grain boundaries and inside grains. Hardness and Young's modulus first increase with increasing the content of Ni doping from 0 to 8 mol% and then both decrease with the further increase in the content of Ni doping. The fracture toughness increases with increasing the content of Ni doping from 0 to 20 mol%. However, it decreases with further increasing the content of Ni doping due to the increase in porosity.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Li Wang, Rui Dou, Yizhe Li, Huanghai Lu, Mingwen Bai, David Hall, Ying Chen,