Structural and mechanical properties of nano-crystal TiN coatings |
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Authors: | ZHANG Chenhui PAN Guoshun LUO Jianbin Li Wenzhi CHEN Darong |
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Abstract: | The structural and mechanical properties of TiN coatings prepared by ion beam assisted deposition (IBAD) were studied. The coatings have a polycrystal structure with grain size of ~10 nm or less. The hardness of the coatings increases with increasing grain size of TiN crystallites. The coating with grain size of 10.3 nm even has a superhardness of 44.7GPa. The relationship between the hardness and the grain size in the nano-crystalline coatings was discussed on the basis of grain-boundary triple junctions. |
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Keywords: | TiN nano-crystal microstructure hardness grain-boundary triple junctions |
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