Journal ArticleDOI
Formation of cubic-A1N in TiN/A1N superlattice
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TLDR
In this paper, the crystal structure of A1N changes from Wurtzite type to NaCl type for superlattice periods ≤ 3 nm, and the film hardness increased to about twice that of the TiN single layer film at a period = 2.5 nm.Abstract:
Ceramic superlattice is one of approaches for new ceramic film development. We deposited TiN/A1N superlattice films by arc ion-plating process, and evaluated the crystal structure of these films by transmission electron diffraction and X-ray diffraction. It was revealed that the crystal structure of A1N changes from Wurtzite type to NaCl type for superlattice periods ≤ 3 nm. The film hardness increased to about twice that of the TiN single layer film at a period = 2.5 nm. NaCl phase of A1N is one of the phases that exists under high pressure and it is expected that there will be a high bulk modulus.read more
Citations
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The search for novel, superhard materials
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Nanocrystalline materials and coatings
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Thermal stability of nitride thin films
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Nanometer scale multilayered hard coatings
P. Yashar,William D. Sproul +1 more
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Journal ArticleDOI
Performance of PVD TiN, TiCN, and TiAlN coated cemented carbide tools in turning
TL;DR: In this article, PVD TiN, TiCN, and high-ionization sputtered PVDTiAlN coatings were deposited on WC-6wt%Co hardmetal inserts.
References
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Journal ArticleDOI
Growth of single-crystal TiN/VN strained-layer superlattices with extremely high mechanical hardness
TL;DR: In this paper, single-crystal TiN/VN strained-layer superlattices with layer thicknesses ranging from 0.75 to 16 nm have been grown on MgO(100 ) substrates by reactive magnetron sputtering and cross-sectional transmission electron microscopy (TEM) and x-ray diffraction examinations showed that the films were single crystals exhibiting coherent interfaces and several orders of super-lattice reflections.
Journal ArticleDOI
Electronic structure of high pressure phase of AlN
TL;DR: In this article, Hartree-Fock calculations for the electronic structure of aluminum nitride in the high pressure (high-pressure) rocksalt phase were reported, and the calculated lattice constant is 3.982 A with the bulk modulus of 329 GPa.