MARKING COMPOSITION BASED ON INORGANIC LUMINOPHORES, METHOD FOR MARKING METAL ITEMS AND METAL ITEM

摘要

The invention relates to compositions of inorganic phosphors suitable for protecting valuable material objects against counterfeit. A composition for marking metal products produced by powder metallurgy technique includes a phosphor and a binding/lubricating agent as which fatty acid derivatives or synthetic wax powders and/or paraffin powders are used. A method for marking metal products consists in mixing a metal alloy powder with a marking composition, followed by compacting the resultant mixture and sintering. The invention provides for the achievement of an even distribution of a marking component in the metal powder, and also effective marking of the products in the process of manufacture thereof by powder metallurgy technique, and a simplification and safety of the marking technique.