期刊
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
卷 31, 期 5, 页码 3535-3549出版社
SPRINGER
DOI: 10.1007/s11665-021-06498-2
关键词
Al; (TiC+TiB2); GNPs hybrid composites; corrosion behavior; nano-indentation; spark plasma sintering
The main objective of this study is to improve the mechanical properties and corrosion behavior of Al + 20 vol.% (TiC + TiB2) hybrid composites containing different contents of GNPs using the SPS technique. The results show that the composite sample containing 1 wt.% GNPs exhibits the highest hardness, Young's modulus, and corrosion resistance among all the samples.
The main objective of this study is improvement of mechanical properties and corrosion behavior of Al + 20 vol.% (TiC + TiB2) hybrid composites containing various contents of GNPs (0.1, 0.5, and 1wt.%) prepared by SPS technique. The x-ray diffraction proved the formation of the prepared TiC + TiB2 powders. FE-SEM images demonstrated the homogeneous and uniform dispersion of the GNPs and TiC + TiB2 particles in the matrix. Young's modulus and hardness were evaluated by the nano-indentation test. The results showed that the maximum hardness (4.79 GPa) and maximum Young's modulus (137.8 GPa) were obtained for the composite sample containing 1 wt.% GNPs. Corrosion behavior was investigated by polarization and impedance tests. The results revealed that the sample containing 1 wt.% GNPs as reinforcement had the maximum corrosion resistance.
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