The investigation of the mechanical properties of Mn doped BaSnO3 nanoparticles

Frontiers in Theoretical and Applied Physics/UAE 2017

Kazah, I.^1 ; Awad, R.^1

Physics Department, Faculty of Science, Beirut Arab University, Beirut, Lebanon^1

关键词: Coprecipitation method;    Cubic structure;    Elastic-plastic deformation;    Load independent;    Proportional specimen resistance model;    Structural and mechanical properties;    Vickers microhardness;    X-ray diffraction analyses (XRD);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/869/1/012029/pdf
DOI  :  10.1088/1742-6596/869/1/012029

来源: IOP

【 摘 要 】

This study investigates the effect of Mn substitution on the structural and mechanical properties of nano BaSnO3using X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), Scanning electron microscope (SEM) and Vickers microhardness. For this investigation, samples of type BaSn1-xMnxO3with 0.04 ≤ x ≤ 0.4 were prepared by co-precipitation method. XRD patterns indicate the formation of single phase cubic structure BaSnO3with space group (Pm3m) for 0 ≤ x ≤ 0.1. BaMnO2hexagonal phase appears as impurity for x > 0.1. The crystallite size, increases as x increases. Vickers microhardness Hvwas carried out at different applied loads varying between 0.98 N and 9.8 N at dwell time 40 seconds. The results show that Hvincreases as the Mn-content increases, whereas it decreases as the applied load increase. The Hvresults were analysed using Elastic Plastic Deformation and the Modified proportional specimen resistance models. The Vickers microhardness analysis indicates that Modified Proportional Specimen Resistance model is the most suitable one for describing the load independent microhardness region of the investigated samples.