The research of two-dimensional nanomaterials for anticorrosion applications is just recently burgeoning. Herein, we demonstrate the boron nitride nanosheets (BNNSs) coatings for protecting polymer from oxygen-atom corrosion. High-quality BNNSs, which are produced by an effective fluid dynamics method with multiple exfoliation mechanisms, can be assembled into coatings with controlled thickness by vacuum filtration. After exposed in atom oxygen, the naked polymer is severely corroded with remarkable mass loss, while the BNNSs-coated polymer remains intact. Barrier and bonding effects of the BNNSs are responsible for the coating's protective performance. These preliminary yet reproducible results pave a way for resisting oxygen-atom corrosion.
Kapton, a commonly used spacecraft material, is studied to investigate the
atomic oxygen (AO) erosion effects in a plasma-type ground-based AO
effects simulation facility. The samples before and after the experiments are
compared in aspect, mass and surface morphology. The reaction characteristics of
the material in the facility are obtained. The contribution of AO and
ionic oxygen to mass loss in the sample and the reaction mechanism between the different
particles and samples are analysed. It is concluded that neutral
AO is the major cause of material erosion and mass loss and that the
collision of energetic ions may accelerate the oxidation reaction.
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