Abstract
Bronze/TiO2 composites with 5 wt.% and 20 wt.% TiO2 were prepared by mechanical milling and densification of the corresponding powder mixtures. The milled powders were densified by two different methods. In the first process, the powders were pressureless sintered in liquid state at three different temperatures. The observations showed that just the samples with 5 wt.% TiO2 which were sintered at 900°C were densified by liquid phase sintering and the other samples were not consolidated via the applied sintering conditions. The sintered compacts were cold-repressed for more densification under 100 MPa. In the second method, the milled powders were consolidated via spark plasma sintering without any prepressing process. The microstructural evaluations showed a fine dispersion of TiO2 within the bronze matrix of the spark plasma sintered samples. The highest relative density (96%), hardness (320 Vickers) and flexural strength (365 MPa) corresponded to the spark plasma sintered sample with 20 wt.% TiO2.
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Kokabi, A., Ardestani, M., Tamizifar, M. et al. Characterization of TiO2-Reinforced Bronze Matrix Composite Prepared by SPS and PSR Densification Methods. JOM 71, 2522–2530 (2019). https://doi.org/10.1007/s11837-019-03542-4
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DOI: https://doi.org/10.1007/s11837-019-03542-4