Cold-worked metal articles including luminescent phosphor particles, methods of forming the same, and methods of authenticating the same

US9387719B2 · kind B2 · utility

Assignees

• HONEYWELL INTERNATIONAL INC. · US
• The Royal Mint Limited · GB

Inventors

• William Ross Rapoport · Bound Brook, US
• James Kane · Lawrenceville, US
• Carsten Lau · Garbsen, DE

Key dates

• Filing date: Oct 27, 2014
• Grant date: Jul 12, 2016
• Expiry date: Oct 27, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249921
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Cold-worked metal articles, methods of forming cold-worked metal articles, and methods of authenticating cold-worked metal articles are provided. In an embodiment, a cold-worked metal article includes a cold-worked metal-containing surface that defines pores. The cold-worked metal-containing surface includes luminescent phosphor particles disposed within the pores. The luminescent phosphor particles include a host crystal lattice material and at least one active ion that includes an absorbing ion and an emitting ion that is different from the absorbing ion. The luminescent phosphor particles are harder than the cold-worked metal-containing surface.