Patent ID: 9416434
Filing Date: 2016-08-16
CPC Classification: C22C,C23C,F16J,Y10T

Claim Text:
1. A high-toughness coating film, comprising a composition containing a mixture of metallic chromium having dissolved nitrogen therein and Cr2N, wherein a content of the nitrogen in the high-toughness coating film is 2.0 to 8.5 mass %, and wherein IP, which is expressed by total of each diffraction peak intensity of Cr2N/(total of each diffraction peak intensity of metallic chromium+total of each diffraction peak intensity of Cr2N), is 3 to 40% when 2θ is in a range of 30° to 90°, where θ is an incident angle in X-ray diffraction of the high-toughness coating film.