Purdue University in Indianapolis

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Browsing Purdue University in Indianapolis by Subject "2D transition metal carbides"

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    Perspectives of 2D MXene Tribology
    (Wiley, 2023) Rosenkranz, Andreas; Righi, Maria Clelia; Sumant, Anirudha V.; Anasori, Babak; Mochalin, Vadym N.; Mechanical and Energy Engineering, Purdue School of Engineering and Technology
    The large and rapidly growing family of two-dimensional early transition metal carbides, nitrides, and carbonitrides (MXenes) raises significant interest in the materials science and chemistry of materials communities. Discovered a little more than a decade ago, MXenes have already demonstrated outstanding potential in various applications ranging from energy storage to biology and medicine. The past two years have witnessed increased experimental and theoretical efforts toward studying MXenes’ mechanical and tribological properties when used as lubricant additives, reinforcement phases in composites, or solid lubricant coatings. Although research on the understanding of the friction and wear performance of MXenes under dry and lubricated conditions is still in its early stages, it has experienced rapid growth due to the excellent mechanical properties and chemical reactivities offered by MXenes that make them adaptable to being combined with other materials, thus boosting their tribological performance. In this perspective, we summarize the most promising results in the area of MXene tribology, outline future important problems to be pursued further, and provide methodological recommendations that we believe could be useful for experts, as well as newcomers to MXenes research, in particular, to the emerging area of MXene tribology.
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    Self-assembly and in-situ characterization of Ti3C2Tx in Al: A step toward additive manufacturing of MXene-metal composites
    (Elsevier, 2022) Wyatt, Brian C.; Anasori, Babak; Mechanical and Energy Engineering, Purdue School of Engineering and Technology
    Two-dimensional (2D) transition metal carbides, known as MXenes, have grown in research interest since 2011 partly due to their impressive high electrical conductivity, stiff mechanical properties, and abundant chemically-active surface groups. These key features of MXenes make them attractive candidates for uniform coverage of metal powders for additive manufacturing of multi-functional metal composites. In this study, we report on a tunable self-assembly process of nanometer-thick 2D MXene flakes on micron-size Al particles using 1–10 wt% of single-to-few and multi-layer Ti3C2Tx MXene. In addition, we discuss the characterization of these composites using 2D x-ray diffraction (XRD2) for identification of the characteristic Ti3C2Tx diffraction peaks. Lastly, we use in-situ XRD2 paired with Vickers hardness and scanning electron microscopy/energy dispersive x-ray spectroscopy methods to understand the effect of sintering on the Ti3C2Tx morphology and the resultant mechanical properties of the bulk composite. This study aims to assist future advances in additive manufacturing of MXene-metal composites for an array of multi-functional applications.