Patent ID: 11858158
Assignee: DORCO CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 7:
8. A method for manufacturing a razor blade for a wet razor, the method comprising:
performing a heat treatment on a blade substrate to create a heat-treated blade substrate;
forming a blade edge on the heat-treated blade substrate by polishing the heat-treated blade substrate;
forming a coating layer directly on the heat-treated blade substrate comprising one or more nanocrystalline structures by performing physical vapor deposition (PVD) on the heat-treated blade substrate, on which the blade edge is formed, by using a single composite target including chromium and boron that are mechanically combined and mixed to provide the coating layer including an amorphous region in which the chromium and the boron are mixed,
wherein the one or more nanocrystalline structures are dispersed in the amorphous region, and
wherein the one or more nanocrystalline structures comprise chromium boride.