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205results about How to "Improve removability" patented technology

Material with hard coating film formed on substrate surface thereof

There is provided a hard-coated material in which a substrate thereof is coated with a hard coating film that is excellent in wear resistance and also excellent in film removability to allow easy removal thereof once damaged or worn for the purpose of recycled use of the substrate. The hard coating film formed on the substrate comprises a layer-A and a layer-B; wherein the layer-A has a component composition represented by the formula TivM1-v(CxNyOz) (where M denotes at least one species selected from predetermined elements, and the variables v, x, y, and z indicate predetermined ratios of the respective elements); and wherein the layer-B has a component composition represented by the formula TivCrwM1-v-w(CxNyOz) (where M denotes at least one species selected from predetermined elements, and the variables v, w, x, y, and z indicate predetermined ratios of the respective elements). The layer-A and the layer-B are laminated alternately in succession. In terms of lamination units each corresponding to a combination of a singularity of the layer-A disposed at the lower level and a singularity of the layer-B disposed at the upper level, at least two lamination units are provided in laminated structure formation. The ratio in thickness of a singularity of the layer-B to a singularity of the layer-A is at least 2. The thickness of a singularity of the layer-A is within the range of 0.1 to 3 μm both inclusive, the thickness of a singularity of the layer-B is within the range of 1 to 10 μm both inclusive, and the total thickness of a plurality of the layers-B is at least 5 μm.
Owner:KOBE STEEL LTD
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