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Corrosion Behavior of 1D and 2D Polymorphs of Boron Nitride Ceramic
1Plasma Forming Laboratory, Mechanical and Materials Engineering, Florida International University, Miami, Florida33174, United States.
Abstract:
This study reports a fundamental electrochemical study to understand the corrosion behavior of 1D bulk, free-standing 1D boron nanotube (BNNT) buckypaper and compare it with a sintered 2D hBN nanoplatelet (BNNP) pellet. Tafel analysis indicates that 1D BNNT has superior corrosion resistance with a lower corrosion rate of 0.0026 mils per year (mpy). 2D BNNP, although having similar chemistry to 1D BNNT, resulted in an increased (40 times) corrosion rate of 0.107 mpy. The higher surface area and aspect ratio of BNNT drastically influenced the corrosion kinetics. The scientific outcomes will enable the better design of novel hBN-based corrosion-resistant materials.
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