Abstract
Construction of multilayer architecture has emerged as an effective approach for tailoring the comprehensive properties of coatings. Here, the structure, mechanical properties and oxidation resistance of CrAlSiN/CrAlBN multilayer were investigated in detail. An epitaxial growth is observed between CrAlBN and CrAlSiN sublayers, where the CrAlSiN/CrAlBN multilayer reveals a face-centered cubic structure. Interfacial strengthening effect enhances the hardness to ∼37.1 GPa of CrAlSiN/CrAlBN in contrast to the ∼36.4 GPa of CrAlBN and ∼33.4 GPa of CrAlSiN monolayers. The oxidation resistance of the CrAlSiN/CrAlBN multilayer lies between CrAlBN and CrAlSiN monolayers. Following oxidation at 1100 °C for 15 h, the oxide layer thickness of CrAlBN, CrAlSiN and CrAlSiN/CrAlBN coatings are ∼1.5 μm, ∼0.8 μm and ∼1.1 μm, respectively.
Published Version
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