Magnesum ion batteries are an exciting new technology that offer prospects towards significantly higher capacities of electrochemical storage. During discharge, each magnesium 2+ ion which moves through the electrolyte to the cathode results in 2 electrons driven through an electrical circuit, allowing for potentially higher performance in secondary ion batteries.
Towards the development of reusable space systems, high emissivity coatings on fibrous ceramic substrates with improved thermal resistance are needed. In this study WSi2–MoSi2–Si–SiB6-borosilicate glass coatings were prepared on fibrous ZrO2 by slurry dipping and subsequent high temperature rapid sintering. A coating with 20 wt% WSi2 and 50 wt% MoSi2 presents optimal thermal stability with only 10.06 mg/cm2 mass loss and 4.0% emissivity decrease in the wavelength regime 1.27–1.73 μm after 50 h oxidation at 1773 K. The advantages of double phase metal-silicide coatings combining WSi2 and MoSi2 include improved thermal compatibility with the substrate and an enhanced glass-mediated self-healing ability.
Heavy ion irradiation can be used to modify the atomic structure of a material and improve its dissolution characteristics as shown here. This has implication for the design of bioceramics
The morphology of MAX phase composites is examined here. Specifically, crack branching is examined in Al - Ti2AlC composites showing the role of MAX phase distribution on the fracture performance of such materials. Ductile alloy phases serve to deflect cracks in the hard, yet tough, MAX phase.
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