Abstract
External catalysts are commonly pre-coated on Ti alloy powders for in situ synthesis of carbon nanotubes (CNTs) to resolve the inhomogeneity issue, but their excessive introduction changes the matrix composition. Here, we activated the catalytic function of trace Fe impurity solid solute in Ti-6Al-4V powders to plant CNTs within the Ti-6Al-4V powders without modifying the composition. These CNTs exhibited high reactivity with Ti, were retained in the consolidated composites, and improved the mechanical properties.
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This work was supported by the Key Research Program of Frontier Sciences, Chinese Academy of Sciences (Grant No. QYZDB-SSW-JSC045) and National Key Research and Development Program of China (Grant No. 2018YFB1105100). This work was also financially supported by the DNL Cooperation Fund, CAS (No. DNL180304).
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Manuscript submitted April 11, 2019.
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Li, S.F., Liu, Y., Yang, Y.F. et al. Activating Trace Fe Impurity as Catalyst to Plant Carbon Nanotubes Within Ti-6Al-4V Powders for High-Performance Ti Metal Matrix Composites. Metall Mater Trans A 50, 3975–3979 (2019). https://doi.org/10.1007/s11661-019-05321-x
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DOI: https://doi.org/10.1007/s11661-019-05321-x