Structure · dataset · 2018
Microstructure, Mechanical Properties and in vitro Biological Behavior of Silicon Nitride Ceramics
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The bioinert surface of silicon nitride ceramics led us to investigate the additions of SiO2, CaO and Al2O3 in order to aid the liquid phase sintering and improve the mechanical properties and biological behavior of the final materials.
Description
The sintered materials reached ca. 97% of theoretical density and total α→β-Si3N4 transformation. The samples had relatively high values of fracture toughness while their elastic modulus values were lower than those of conventional silicon nitride ceramics.
Apatite deposits were observed on the surfaces analyzed after SBF (simulated body fluid) immersions, suggesting their bioactivity. Osteoblasts proliferation and calcified matrix were also detected as response to cells/materials contact. This combination of properties suggests that all studied compositions are promising for applications in biomedical devices.
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Moreover, compositions with alumina additions and higher silica content had better in vitro biological behavior, densification and mechanical properties, suggesting greater potential to be used in bone substitute devices.
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- Repository landing page scielo.figshare.com/articles/Microstructure_Mechanical_Properties_and_in_vitro_Bio… ↗
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- DOI doi.org/10.6084/m9.figshare.7102784 ↗
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Documentation and papers
- Creative Commons Attribution 4.0 International creativecommons.org/licenses/by/4.0/legalcode ↗
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- IsSupplementTo 10.1590/1980-5373-mr-2018-0266 doi.org/10.1590/1980-5373-mr-2018-0266 ↗
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- DataCite API api.datacite.org/dois/10.6084/m9.figshare.7102784 ↗
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- DataCite Commons commons.datacite.org/doi.org/10.6084/m9.figshare.7102784 ↗
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Topics
- Stated by source
- Chemical engineering · Materials engineering
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Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| DataCite | 10.6084/m9.figshare.7102784 | 13 d ago | JSON v1 |
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| concepts[field].fos:materials-engineering | source · DataCite | connector:datacite@1.0.0 | |
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