| 摘要 |
A decorative coating film (10) formed on a surface of a resinous base (20) placed on a path of electromagnetic waves of a radar device, the decorative coating film (10) including: fine particles (1a) of a silver alloy dispersed in the decorative coating film; and a light-transmissive binder resin (1b) with which the fine particles (1a) of a silver alloy are bonded, wherein the silver alloy consists of an alloy of silver and zinc, the zinc being contained in an amount of 0.5 to 50 mass% relative to the silver. |
